.profile-tutor-page .tutor-workspace{--tutor-sidebar-width:248px;border:1px solid color-mix(in srgb,#2f7dff 22%,var(--chrome-border));background:radial-gradient(circle at 78% 0,color-mix(in srgb,#1264ff 10%,transparent),transparent 32%),var(--chrome-surface)}.tutor-sidebar-brand{display:flex;align-items:center;gap:9px;min-height:42px;margin:0 0 18px;color:var(--foreground);font-size:1.05rem;font-weight:800;letter-spacing:-.04em}.tutor-sidebar-brand img{width:34px;height:34px;object-fit:contain}.tutor-sidebar-brand span{color:#dbeaff}.tutor-sidebar.collapsed .tutor-sidebar-brand span{display:none}.profile-tutor-page .tutor-sidebar{background:color-mix(in srgb,#061a3e 72%,var(--chrome-surface-subtle))}.profile-tutor-page .tutor-chat-header{min-height:76px;padding-inline:clamp(18px,3vw,34px);background:color-mix(in srgb,#061a3e 76%,var(--chrome-surface))}.profile-tutor-page .tutor-assistant-icon{width:46px;height:46px;border-color:#1684ff;border-radius:14px;background:#061a3e;box-shadow:0 0 0 3px color-mix(in srgb,#1684ff 12%,transparent),0 8px 24px rgb(0 95 255/20%)}.profile-tutor-page .tutor-assistant-icon img,.profile-tutor-page .tutor-empty-icon img,.profile-tutor-page .tutor-message-icon img{object-fit:cover}.profile-tutor-page .tutor-chat-identity small{color:#9cc8ff;font-size:.75rem;letter-spacing:0;text-transform:none}.profile-tutor-page .tutor-chat-identity h1{font-size:1.15rem}.profile-tutor-page .tutor-message.assistant{gap:10px}.profile-tutor-page .tutor-message.assistant .tutor-message-icon{width:46px;height:46px;border-color:#1684ff;border-radius:12px;background:#061a3e;box-shadow:0 0 0 2px color-mix(in srgb,#1684ff 10%,transparent)}.profile-tutor-page .tutor-message.assistant>div{padding:16px 18px;border:1px solid color-mix(in srgb,#2f7dff 30%,var(--chrome-border));border-radius:8px 18px 18px 18px;background:linear-gradient(145deg,color-mix(in srgb,#1264ff 12%,var(--surface)),color-mix(in srgb,#061a3e 18%,var(--surface)));box-shadow:0 10px 28px rgb(0 29 88/14%)}.profile-tutor-page .tutor-message.user{border-color:#1264ff;background:linear-gradient(145deg,#176dff,#0750d6);box-shadow:0 10px 24px rgb(0 80 220/22%)}.profile-tutor-page .tutor-message.user small{color:#d8e8ff}.profile-tutor-page .tutor-composer{width:min(100%,760px);border-color:#2f7dff;background:color-mix(in srgb,#061a3e 70%,var(--surface-raised));box-shadow:0 12px 32px rgb(0 28 90/18%)}.profile-tutor-page .tutor-composer-footer .primary-button{width:42px;height:42px;min-height:42px;border-radius:50%}.profile-tutor-page .tutor-composer-footer .primary-button svg{width:20px;height:20px}.profile-tutor-page .tutor-empty-icon{width:74px;height:74px;border-color:#1684ff;border-radius:22px;background:#061a3e;box-shadow:0 0 0 5px color-mix(in srgb,#1684ff 9%,transparent),0 14px 34px rgb(0 80 220/18%)}@media (max-width:767px){.app-frame:has(.profile-tutor-page)>.main-content{padding-bottom:0}.tutor-sidebar-brand{display:none}.profile-tutor-page .tutor-chat-header{min-height:64px;padding-inline:12px}.profile-tutor-page .tutor-assistant-icon{width:38px;height:38px;border-radius:12px}.profile-tutor-page .tutor-message.assistant{grid-template-columns:38px minmax(0,1fr);gap:8px}.profile-tutor-page .tutor-message.assistant .tutor-message-icon{width:38px;height:38px;border-radius:9px}.profile-tutor-page .tutor-message.assistant>div{padding:13px 14px}.profile-tutor-page .tutor-message.user{width:calc(100% - 4px)}}.profile-tutor-page .tutor-sidebar{gap:18px;padding:18px 14px 14px;border-right-color:color-mix(in srgb,var(--chrome-border) 55%,transparent);background:linear-gradient(180deg,color-mix(in srgb,var(--chrome-surface-subtle) 92%,#283b67),var(--chrome-surface-subtle))}.profile-tutor-page .tutor-sidebar>header{padding-bottom:14px;border-bottom:1px solid color-mix(in srgb,var(--chrome-border) 55%,transparent)}.profile-tutor-page .tutor-sidebar-title h2{font-size:1.08rem}.profile-tutor-page .tutor-sidebar .tutor-new-conversation{min-height:36px;border-radius:12px}.profile-tutor-page .tutor-sidebar nav{gap:5px}.profile-tutor-page .tutor-sidebar .tutor-conversation-row{min-height:42px;padding:3px;border:1px solid transparent;border-radius:12px;transition:border-color .16s ease,background .16s ease}.profile-tutor-page .tutor-sidebar .tutor-conversation-row:hover{border-color:color-mix(in srgb,var(--chrome-border) 65%,transparent);background:color-mix(in srgb,var(--foreground) 4%,transparent)}.profile-tutor-page .tutor-sidebar nav .tutor-conversation-row:has(.active){border-color:color-mix(in srgb,var(--accent) 24%,transparent);border-radius:12px;background:color-mix(in srgb,var(--accent) 9%,var(--surface))}.profile-tutor-page .tutor-sidebar .tutor-conversation-row button:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.profile-tutor-page .tutor-sidebar>p{padding-top:14px;line-height:1.55}.profile-tutor-page .tutor-chat-footer{gap:10px}.profile-tutor-page .tutor-quick-actions{border-radius:16px;background:color-mix(in srgb,var(--surface-raised) 62%,transparent);box-shadow:0 8px 28px rgb(3 10 25/10%)}.profile-tutor-page .tutor-composer{border-radius:20px;background:color-mix(in srgb,var(--surface-raised) 84%,transparent);box-shadow:0 14px 38px rgb(3 10 25/20%),inset 0 1px color-mix(in srgb,#fff 7%,transparent)}.profile-tutor-page .tutor-composer textarea{min-height:72px}.tutor-composer-footer button[class*=trigger]{width:36px;height:36px;min-height:36px;padding:0;border-radius:10px;background:transparent;font-size:0}.profile-tutor-page .tutor-message.assistant .tutor-message-icon{overflow:visible;border:0;border-radius:50%;background:transparent;box-shadow:none}.profile-tutor-page .tutor-message.assistant .tutor-message-icon>span{animation:ruvy-reply-arrive .42s cubic-bezier(.2,.7,.25,1) both}@keyframes ruvy-reply-arrive{0%{opacity:.4;transform:translateY(4px) scale(.88)}to{opacity:1;transform:translateY(0) scale(1)}}.lesson-ai-layer{position:fixed;z-index:1000;inset:0;display:flex;justify-content:flex-end}.lesson-ai-backdrop{position:absolute;inset:0;border:0;background:rgb(3 8 19/45%);backdrop-filter:blur(3px);cursor:default;animation:lesson-ai-fade .18s ease-out both}.lesson-ai-panel{position:relative;display:grid;width:min(460px,100%);height:100%;grid-template-rows:auto auto minmax(0,1fr) auto;border-left:1px solid color-mix(in srgb,var(--accent) 24%,var(--chrome-border));background:color-mix(in srgb,var(--chrome-surface) 95%,transparent);box-shadow:-24px 0 70px rgb(0 0 0/26%);animation:lesson-ai-enter .24s cubic-bezier(.2,.75,.25,1) both}.lesson-ai-header{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 20px;border-bottom:1px solid var(--chrome-border)}.lesson-ai-brand{display:flex;min-width:0;align-items:center;gap:12px}.lesson-ai-brand>div{min-width:0}.lesson-ai-brand span{color:var(--accent);font-size:.61rem;font-weight:800;letter-spacing:.1em}.lesson-ai-brand h2{margin:3px 0 0;font-size:1.12rem;letter-spacing:-.025em}.lesson-ai-header>button{display:grid;width:36px;height:36px;flex:0 0 auto;place-items:center;border:1px solid var(--chrome-border);border-radius:12px;background:var(--surface-subtle);color:var(--foreground);cursor:pointer}.lesson-ai-context{display:flex;align-items:center;gap:11px;padding:12px 20px;border-bottom:1px solid color-mix(in srgb,var(--chrome-border) 68%,transparent);color:var(--accent)}.lesson-ai-context span{display:grid;min-width:0;gap:2px}.lesson-ai-context small{color:var(--muted-foreground);font-size:.69rem}.lesson-ai-context strong{overflow:hidden;color:var(--foreground);font-size:.76rem;text-overflow:ellipsis;white-space:nowrap}.lesson-ai-messages{display:flex;min-height:0;flex-direction:column;gap:16px;overflow:auto;padding:20px}.lesson-ai-empty{display:grid;align-content:center;justify-items:center;flex:1;text-align:center}.lesson-ai-empty h3{margin:12px 0 0;font-size:1.05rem}.lesson-ai-empty p{max-width:300px;margin:7px 0 0;color:var(--muted-foreground);font-size:.82rem;line-height:1.5}.lesson-ai-message{display:flex;align-items:flex-start;gap:10px}.lesson-ai-message.user{justify-content:flex-end}.lesson-ai-message>div{max-width:min(88%,370px);padding:12px 14px;border:1px solid var(--chrome-border);border-radius:15px;background:var(--surface-subtle)}.lesson-ai-message.user>div{border-color:color-mix(in srgb,var(--accent) 32%,transparent);background:color-mix(in srgb,var(--accent) 12%,var(--surface))}.lesson-ai-message small{display:block;margin-bottom:5px;color:var(--muted-foreground);font-size:.68rem;font-weight:700}.lesson-ai-message p{margin:0;font-size:.85rem;line-height:1.55;white-space:pre-wrap}.lesson-ai-message .lesson-ai-failed{display:block;margin-top:8px;color:var(--warning,#e5a832);font-size:.72rem}.lesson-ai-loading,.lesson-ai-thinking{display:flex;align-items:center;justify-content:center;gap:9px;padding:12px;color:var(--muted-foreground);font-size:.78rem}.lesson-ai-footer{display:grid;gap:8px;padding:12px 16px max(14px,env(safe-area-inset-bottom));border-top:1px solid var(--chrome-border);background:color-mix(in srgb,var(--chrome-surface) 92%,transparent)}.lesson-ai-footer .tutor-composer{width:100%;box-sizing:border-box}.lesson-ai-footer .tutor-composer textarea{min-height:64px}.lesson-ai-footer>small{color:var(--muted-foreground);font-size:.66rem;text-align:center}.lesson-ai-error{margin:0;padding:9px 11px;border:1px solid color-mix(in srgb,#ed9b48 34%,transparent);border-radius:10px;background:color-mix(in srgb,#ed9b48 9%,var(--surface));color:var(--foreground);font-size:.76rem}.lesson-ai-backdrop:focus-visible,.lesson-ai-header button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}@keyframes lesson-ai-enter{0%{opacity:.75;transform:translateX(18px)}to{opacity:1;transform:translateX(0)}}@keyframes lesson-ai-fade{0%{opacity:0}to{opacity:1}}@media (max-width:560px){.lesson-ai-panel{border-left:0}.lesson-ai-context,.lesson-ai-header,.lesson-ai-messages{padding-inline:16px}}@media (prefers-reduced-motion:reduce){.lesson-ai-backdrop,.lesson-ai-panel,.profile-tutor-page .tutor-message.assistant .tutor-message-icon>span{animation:none}}.tutor-workspace{--tutor-sidebar-width:260px;--tutor-reading-width:720px;display:grid;grid-template-columns:var(--tutor-sidebar-width) minmax(0,1fr);min-height:0;border-color:var(--chrome-border);border-radius:var(--chrome-radius);background:var(--chrome-surface);box-shadow:var(--chrome-shadow)}.tutor-sidebar{display:flex;flex-direction:column;min-height:0;padding:20px 16px 16px;border-right:1px solid color-mix(in srgb,var(--chrome-border) 80%,transparent);background:var(--chrome-surface-subtle)}.tutor-sidebar>header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 2px 18px}.tutor-sidebar-title{display:grid;gap:3px}.tutor-conversations h3,.tutor-sidebar-title>span{color:var(--muted-foreground);font-size:.66rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase}.tutor-sidebar-title h2{margin:0;font-size:1.15rem;letter-spacing:-.04em;font-weight:800}.tutor-sidebar .tutor-new-conversation{display:inline-flex;width:auto;min-height:38px;align-items:center;justify-content:center;gap:7px;margin:0;padding:0 14px;border:0;border-radius:var(--chrome-control-radius);background:var(--accent);color:var(--accent-foreground);box-shadow:0 2px 8px color-mix(in srgb,var(--accent) 28%,transparent);font-size:.74rem;font-weight:800;cursor:pointer;transition:transform var(--motion-press) var(--ease-out),box-shadow var(--motion-fast) ease}.tutor-sidebar .tutor-new-conversation:hover{transform:translateY(-1px);box-shadow:0 4px 14px color-mix(in srgb,var(--accent) 38%,transparent)}.tutor-sidebar .tutor-new-conversation:active{transform:scale(.97)}.tutor-sidebar .tutor-new-conversation svg{width:15px}.tutor-conversations{display:grid;min-height:0;flex:1 1 auto;grid-template-rows:auto minmax(0,1fr);gap:8px;margin:0;padding:14px 0 0;border-top:1px solid color-mix(in srgb,var(--chrome-border) 60%,transparent)}.tutor-conversations>div{display:flex;align-items:center;justify-content:space-between;padding:0 4px}.tutor-conversations h3{margin:0}.tutor-conversations>div>span{display:grid;min-width:20px;height:20px;place-items:center;border-radius:999px;background:color-mix(in srgb,var(--accent) 10%,var(--surface));color:var(--muted-foreground);font-size:.64rem;font-weight:800}.tutor-sidebar nav{display:grid;min-height:0;align-content:start;gap:2px;margin:0;overflow-y:auto;scrollbar-width:thin}.tutor-conversation-row{display:grid;grid-template-columns:minmax(0,1fr) 28px 28px;gap:2px;align-items:center;min-height:40px;border-radius:9px;transition:background var(--motion-fast) ease}.tutor-sidebar nav .tutor-conversation-row:hover{background:color-mix(in srgb,var(--foreground) 5%,transparent)}.tutor-sidebar nav .tutor-conversation-row:has(.active){grid-template-columns:2px minmax(0,1fr) 28px 28px;gap:2px;background:color-mix(in srgb,var(--accent) 8%,var(--surface))}.tutor-sidebar nav .tutor-conversation-row:has(.active):before{width:2px;height:16px;align-self:center;border-radius:999px;background:var(--accent);content:""}.tutor-sidebar nav button{padding:9px 10px;color:var(--muted-foreground);font-size:.78rem;font-weight:650;transition:color var(--motion-fast) ease}.tutor-sidebar nav button.active,.tutor-sidebar nav button:hover{background:transparent;color:var(--foreground);transform:none;box-shadow:none}.tutor-conversation-row>button:not(:first-child){display:grid;width:28px;height:28px;place-items:center;padding:0;border:0;border-radius:7px;background:transparent;color:var(--muted-foreground);cursor:pointer;transition:background var(--motion-fast) ease,color var(--motion-fast) ease}.tutor-conversation-row>button:not(:first-child):hover{background:var(--surface-subtle);color:var(--foreground)}.tutor-conversation-row>button.pinned,.tutor-mobile-conversation-row>button.pinned{background:color-mix(in srgb,var(--accent) 10%,var(--surface));color:var(--accent)}.tutor-conversation-row .tutor-delete-conversation:hover{background:color-mix(in srgb,#ef4444 12%,var(--surface));color:#dc2626}.tutor-conversation-row>button:not(:first-child):focus-visible{outline:2px solid var(--focus);outline-offset:2px}.tutor-sidebar>p{margin:auto 2px 0;padding:12px 2px 0;border-top:1px solid color-mix(in srgb,var(--chrome-border) 60%,transparent);font-size:.65rem;line-height:1.45;color:var(--subtle-foreground)}.tutor-workspace:has(.tutor-sidebar.collapsed){grid-template-columns:56px minmax(0,1fr)}.tutor-sidebar.collapsed{padding:20px 8px 16px;align-items:center}.tutor-sidebar.collapsed>header{flex-direction:column;gap:10px;padding:0 0 14px;align-items:center}.tutor-sidebar.collapsed .tutor-conversations>div,.tutor-sidebar.collapsed .tutor-sidebar-title,.tutor-sidebar.collapsed>p{display:none}.tutor-sidebar.collapsed .tutor-sidebar-actions{flex-direction:column;gap:6px}.tutor-sidebar.collapsed .tutor-new-conversation{width:38px;min-height:38px;padding:0;justify-content:center}.tutor-sidebar.collapsed .tutor-new-conversation span{display:none}.tutor-sidebar.collapsed nav{align-items:center}.tutor-sidebar.collapsed .tutor-conversation-row{grid-template-columns:1fr;justify-items:center;min-height:36px}.tutor-sidebar.collapsed .tutor-conversation-row button:first-child{width:36px;height:36px;padding:0;font-size:0;display:grid;place-items:center;overflow:hidden;border-radius:10px}.tutor-sidebar.collapsed .tutor-conversation-row>button:not(:first-child){display:none}.tutor-sidebar.collapsed .tutor-conversation-row:has(.active){grid-template-columns:1fr}.tutor-sidebar.collapsed .tutor-conversation-row:has(.active):before{width:2px;height:14px}.tutor-sidebar-collapse{display:grid;width:34px;height:34px;place-items:center;padding:0;border:1px solid var(--chrome-border);border-radius:9px;background:var(--surface-subtle);color:var(--muted-foreground);cursor:pointer;transition:background var(--motion-fast) ease,color var(--motion-fast) ease}.tutor-sidebar-collapse:hover{background:var(--surface);color:var(--foreground)}.tutor-mobile-conversation-row{grid-template-columns:minmax(0,1fr) 42px 42px}.tutor-mobile-conversation-row>button:not(:first-child){width:42px;height:42px;border:0;border-radius:11px;background:var(--surface-subtle);color:var(--muted-foreground)}.tutor-mobile-conversation-row .tutor-mobile-delete-conversation{color:#dc2626}.tutor-chat{container-type:inline-size;display:grid;grid-template-rows:auto minmax(0,1fr) auto;background:var(--chrome-surface)}.tutor-chat-header{display:flex;min-height:68px;align-items:center;justify-content:space-between;gap:16px;padding:10px 20px;border-bottom:1px solid var(--chrome-border);background:color-mix(in srgb,var(--chrome-surface) 94%,transparent);backdrop-filter:blur(12px)}.tutor-chat-identity{display:flex;min-width:0;align-items:center;gap:12px}.tutor-assistant-icon{display:grid;width:42px;height:42px;flex:0 0 auto;place-items:center;overflow:hidden;border:1.5px solid color-mix(in srgb,var(--accent) 35%,var(--border));border-radius:12px;background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 14%,var(--surface-subtle)),var(--surface-subtle));color:var(--accent);box-shadow:0 2px 8px color-mix(in srgb,var(--accent) 8%,transparent)}.tutor-assistant-icon img{width:100%;height:100%;object-fit:contain}.tutor-chat-identity>span{display:grid;min-width:0;gap:2px}.tutor-chat-identity small{color:var(--accent);font-size:.67rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase}.tutor-chat-identity h1{overflow:hidden;margin:0;font-size:1rem;line-height:1.25;letter-spacing:-.03em;text-overflow:ellipsis;white-space:nowrap}.tutor-title-row{display:flex;min-width:0;align-items:center;gap:4px}.tutor-title-row button{display:grid;width:26px;height:26px;flex:0 0 auto;place-items:center;padding:0;border:0;border-radius:6px;background:transparent;color:var(--muted-foreground);cursor:pointer;transition:background var(--motion-fast) ease,color var(--motion-fast) ease}.tutor-title-row button:hover{background:var(--surface-subtle);color:var(--foreground)}.tutor-title-row .tutor-header-delete:hover{background:color-mix(in srgb,#ef4444 12%,var(--surface));color:#dc2626}.tutor-title-input{width:min(260px,34vw);min-height:32px;padding:4px 8px;border:1px solid var(--accent);border-radius:7px;outline:2px solid color-mix(in srgb,var(--accent) 12%,transparent);background:var(--surface);color:var(--foreground);font:inherit;font-size:.88rem;font-weight:700}.tutor-history-trigger{display:none}.tutor-header-controls{display:flex;min-width:0;align-items:center;justify-content:flex-end;gap:6px;overflow:hidden}.tutor-header-context{flex-shrink:0}.tutor-header-controls .tutor-mode-picker{min-width:0;flex:1 1 auto}.tutor-header-new,.tutor-mind-map-trigger,.tutor-personalize-trigger{flex:0 0 auto}.tutor-header-context{display:grid;max-width:140px;gap:1px;padding-right:10px;border-right:1px solid color-mix(in srgb,var(--chrome-border) 70%,transparent)}.tutor-header-context span{color:var(--muted-foreground);font-size:.6rem;font-weight:760}.tutor-header-context strong{overflow:hidden;font-size:.72rem;text-overflow:ellipsis;white-space:nowrap}.tutor-header-controls .tutor-usage{position:relative;display:inline-flex;min-width:88px;min-height:36px;align-items:center;gap:6px;margin:0;padding:0 11px;border:1px solid color-mix(in srgb,var(--chrome-border) 75%,transparent);border-radius:10px;background:color-mix(in srgb,var(--surface-subtle) 35%,transparent);color:var(--muted-foreground);white-space:nowrap;overflow:hidden}.tutor-header-controls .tutor-usage-head{display:none}.tutor-header-controls .tutor-usage-body{display:flex;align-items:baseline;gap:4px}.tutor-header-controls .tutor-usage-icon{position:static;display:grid;width:15px;height:15px;place-items:center;color:var(--accent);border-radius:0;background:none}.tutor-header-controls .tutor-usage-number{color:var(--foreground);font-size:.78rem;font-weight:800;line-height:1;letter-spacing:0;font-variant-numeric:tabular-nums;background:none;-webkit-text-fill-color:initial}.tutor-header-controls .tutor-usage-suffix{color:var(--subtle-foreground);font-size:.61rem;font-weight:700}.tutor-header-controls .tutor-usage-bar{display:none}.tutor-usage.is-low{border-color:color-mix(in srgb,#d97706 40%,var(--chrome-border))}.tutor-usage.is-low .tutor-usage-icon{color:#d97706}.tutor-usage.is-low strong{color:#b45309}.tutor-usage.is-low .tutor-usage-fill{background:linear-gradient(90deg,color-mix(in srgb,#d97706 55%,transparent),#f59e0b)}.tutor-usage.is-exhausted{border-color:color-mix(in srgb,#d97706 42%,var(--chrome-border));background:color-mix(in srgb,#d97706 7%,var(--surface))}.tutor-usage.is-exhausted .tutor-usage-icon,.tutor-usage.is-exhausted strong{color:#b45309}.tutor-header-controls .tutor-mode-picker{display:block;margin:0;padding:0;border:0}.tutor-header-controls .tutor-mode-picker>span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.tutor-header-controls .tutor-mode-picker>div{display:flex;gap:2px;padding:3px;border-radius:9px;background:color-mix(in srgb,var(--surface-subtle) 60%,transparent)}.tutor-header-controls .tutor-mode-picker button{min-height:30px;padding:5px 8px;border:0;border-radius:7px;background:transparent;font-size:.64rem;font-weight:700;transition:background var(--motion-fast) ease,color var(--motion-fast) ease}.tutor-header-controls .tutor-mode-picker button:hover{color:var(--foreground)}.tutor-header-controls .tutor-mode-picker button[aria-pressed=true]{background:var(--surface);color:var(--accent);box-shadow:0 1px 3px color-mix(in srgb,#000 8%,transparent)}.tutor-header-new,.tutor-history-trigger{width:38px;height:38px;place-items:center;flex:0 0 auto;padding:0;border:1px solid color-mix(in srgb,var(--chrome-border) 75%,transparent);border-radius:10px;background:transparent;color:var(--foreground);cursor:pointer;transition:background var(--motion-fast) ease,color var(--motion-fast) ease}.tutor-header-new:hover,.tutor-history-trigger:hover{background:var(--surface-subtle)}.tutor-header-new{display:grid}@container (max-width: 1020px){.tutor-header-controls .tutor-usage{min-width:0;padding-inline:9px}.tutor-header-controls .tutor-usage-suffix{display:none}.tutor-chat-header{gap:10px;padding-inline:14px}.tutor-header-context{display:none}.tutor-header-controls{gap:5px}.tutor-header-controls .tutor-usage{min-width:0;padding-inline:9px}.tutor-header-controls .tutor-usage-suffix{display:none}.tutor-header-controls .tutor-mode-picker button{width:30px;padding:0;font-size:0}.tutor-personalize-trigger span{display:none}.tutor-personalize-trigger{width:38px;justify-content:center;padding:0}}.tutor-messages{width:100%;padding:28px clamp(20px,5vw,56px) 24px;scroll-padding-bottom:28px}.tutor-message-stack{display:grid;width:min(100%,var(--tutor-reading-width));gap:24px;margin:0 auto}.tutor-message{width:100%;margin:0;padding:0;border:0;border-radius:0;background:transparent;box-shadow:none}.tutor-message:hover{border:0;box-shadow:none;transform:none}.tutor-message.assistant{display:grid;grid-template-columns:42px minmax(0,1fr);gap:0;background:transparent}.tutor-message.assistant .tutor-message-icon{display:grid;width:42px;height:42px;place-items:center;overflow:hidden;border:1px solid color-mix(in srgb,var(--accent) 30%,var(--border));border-radius:10px;background:color-mix(in srgb,var(--accent) 8%,var(--surface-subtle));color:var(--accent);align-self:start;margin-top:2px}.tutor-message.assistant .tutor-message-icon img{width:100%;height:100%;object-fit:cover;border-radius:10px}.tutor-message.user{width:min(82%,580px);margin-left:auto;padding:13px 16px;border:1px solid color-mix(in srgb,var(--accent) 16%,var(--line-soft));border-radius:16px 16px 5px 16px;background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 7%,var(--surface-subtle)),color-mix(in srgb,var(--accent) 3%,var(--surface-subtle)));box-shadow:0 1px 6px color-mix(in srgb,var(--accent) 4%,transparent)}.tutor-message.user small{color:var(--accent);font-weight:750;font-size:.68rem}.tutor-message p,.tutor-rich-text p{font-size:.95rem;line-height:1.72}.tutor-rich-text h2{margin-top:20px;padding-left:12px;border-left:3px solid var(--accent);font-size:1.15rem;letter-spacing:-.03em}.tutor-rich-text h3{margin-top:18px;font-size:1rem;letter-spacing:-.02em}.tutor-message-actions{display:flex;min-height:30px;align-items:center;gap:3px;margin-top:12px}.tutor-message-actions button{display:inline-flex;min-height:30px;align-items:center;gap:5px;padding:4px 9px;border:0;border-radius:7px;background:transparent;color:var(--muted-foreground);font:inherit;font-size:.7rem;font-weight:700;cursor:pointer;transition:background var(--motion-fast) ease,color var(--motion-fast) ease}.tutor-message-actions button:hover{background:color-mix(in srgb,var(--accent) 10%,var(--surface-subtle));color:var(--accent)}.tutor-message-actions>span{display:inline-flex;align-items:center;gap:4px;color:var(--muted-foreground);font-size:.7rem}@media (hover:hover) and (pointer:fine){.tutor-message-actions{opacity:0;transition:opacity .15s ease}.tutor-message:focus-within .tutor-message-actions,.tutor-message:hover .tutor-message-actions{opacity:1}}.tutor-thinking{width:min(100%,var(--tutor-reading-width));margin:18px auto 0;padding:12px 16px;border:1px solid color-mix(in srgb,var(--accent) 16%,var(--line-soft));border-radius:12px 12px 12px 4px;background:color-mix(in srgb,var(--accent) 5%,var(--surface-subtle));display:flex;align-items:center;gap:10px}.tutor-empty{min-height:100%;display:grid;align-content:center;justify-items:center;text-align:center;padding-bottom:24px}.tutor-empty-icon{display:grid;width:60px;height:60px;place-items:center;border:1.5px solid color-mix(in srgb,var(--accent) 35%,var(--border));border-radius:16px;background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 14%,var(--surface-subtle)),var(--surface-subtle));color:var(--accent);box-shadow:0 8px 24px color-mix(in srgb,var(--accent) 10%,transparent)}.tutor-empty h2{margin-top:16px;font-size:clamp(1.5rem,3vw,2rem);letter-spacing:-.045em;line-height:1.12;font-weight:800}.tutor-empty>p{max-width:400px;margin-top:10px;color:var(--muted-foreground);font-size:.86rem;line-height:1.55}.tutor-empty-suggestions{display:grid;width:min(100%,480px);grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin-top:26px;text-align:left}.tutor-empty-suggestions button{display:grid;min-width:0;grid-template-columns:32px minmax(0,1fr) auto;align-items:center;gap:10px;padding:11px 12px;border:1px solid color-mix(in srgb,var(--line-soft) 80%,transparent);border-radius:13px;background:var(--surface);color:var(--muted-foreground);font:inherit;font-size:.71rem;text-align:left;cursor:pointer;transition:border-color var(--motion-fast) ease,background var(--motion-fast) ease,color var(--motion-fast) ease,transform var(--motion-fast) var(--ease-out),box-shadow var(--motion-fast) ease;animation:card-arrive var(--motion-route) var(--ease-emphasized) backwards}.tutor-empty-suggestions button:hover{border-color:color-mix(in srgb,var(--accent) 40%,var(--line-soft));background:color-mix(in srgb,var(--accent) 6%,var(--surface));color:var(--foreground);transform:translateY(-1px);box-shadow:0 4px 12px color-mix(in srgb,var(--accent) 8%,transparent)}.tutor-suggestion-icon{display:grid;width:32px;height:32px;place-items:center;border-radius:9px;background:color-mix(in srgb,var(--accent) 10%,var(--surface-subtle));color:var(--accent);transition:background var(--motion-fast) ease}.tutor-suggestion-icon svg{width:15px}.tutor-empty-suggestions button:hover .tutor-suggestion-icon{background:color-mix(in srgb,var(--accent) 16%,var(--surface))}.tutor-suggestion-copy{display:grid;min-width:0;gap:2px}.tutor-suggestion-copy strong{color:inherit;font-size:.73rem;font-weight:760;letter-spacing:-.01em}.tutor-suggestion-copy small{overflow:hidden;color:var(--subtle-foreground);font-size:.62rem;font-weight:600;text-overflow:ellipsis;white-space:nowrap}.tutor-suggestion-arrow{width:13px;color:color-mix(in srgb,var(--accent) 60%,transparent);opacity:0;transition:opacity var(--motion-fast) ease,transform var(--motion-press) var(--ease-out)}@media (hover:hover) and (pointer:fine){.tutor-empty-suggestions button:hover .tutor-suggestion-arrow{opacity:1;transform:translateX(2px)}}@media (max-width:540px){.tutor-empty-suggestions{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){.tutor-empty-suggestions button{animation:none}}[data-motion=reduced] .tutor-empty-suggestions button{animation:none}.tutor-chat-identity{gap:9px}.tutor-assistant-icon{width:36px;height:36px;border-radius:10px}@media (max-width:760px){.tutor-workspace{--tutor-sidebar-width:220px}.tutor-quick-actions{grid-template-columns:1fr;gap:4px;padding:7px 8px}.tutor-quick-action-group{display:grid;gap:3px}.tutor-quick-action-group>span{padding-top:0}.tutor-chat-footer{padding-inline:10px}}.tutor-chat-customizing{min-height:0;overflow-y:auto!important;overflow-x:hidden;overscroll-behavior:contain;scrollbar-gutter:stable}.tutor-chat-customizing .tutor-customization{min-height:max-content;margin-bottom:24px}.tutor-customization-section-heading>span,.tutor-customization-section-heading>span svg{flex:0 0 auto}.tutor-customization-section-heading>span{display:inline-flex;align-items:center;justify-content:center;line-height:0}.tutor-customization-section-heading>span svg{width:17px;height:17px}.tutor-customization-avatar>button,.tutor-customization-preview-avatar{display:grid;place-items:center;line-height:0}.tutor-customization-avatar>button img,.tutor-customization-preview-avatar img{display:block;width:100%;height:100%;object-fit:contain}.tutor-customization-presets button>svg{width:18px;height:18px;flex:0 0 auto;align-self:start}.tutor-customization-response .tutor-mode-picker button svg{width:15px;height:15px;flex:0 0 auto}.tutor-customization-actions .primary-button svg,.tutor-customization-avatar>div button svg{flex:0 0 auto}@media (max-width:760px){.tutor-chat-customizing{max-height:none}.tutor-chat-customizing .tutor-customization{margin-bottom:16px}}@media (min-width:761px){.tutor-workspace{--app-navigation-width:270px}.tutor-workspace:has(.tutor-sidebar.collapsed){--tutor-sidebar-width:64px}.tutor-workspace:has(.tutor-sidebar.collapsed){grid-template-columns:64px minmax(0,1fr)}.tutor-sidebar.collapsed{width:64px;box-sizing:border-box;padding-inline:8px}.tutor-sidebar.collapsed .tutor-conversation-row{width:40px;margin-inline:auto}.tutor-sidebar.collapsed .tutor-conversation-row:has(.active){width:40px}.tutor-chat-header,.tutor-chat-identity,.tutor-header-controls{min-width:0}.tutor-chat-header{overflow:hidden}.tutor-header-controls{flex:0 1 auto}.tutor-quick-actions{scrollbar-width:none}.tutor-quick-actions::-webkit-scrollbar{display:none}}.tutor-customization{width:min(100% - 32px,1080px);gap:14px;margin:14px auto;padding:20px;border-radius:18px}.tutor-customization>header{align-items:center;padding-bottom:2px}.tutor-customization>header h2{font-size:clamp(1.25rem,2.4vw,1.65rem)}.tutor-customization>header p{max-width:600px;font-size:.82rem}.tutor-customization-preview{grid-template-columns:52px minmax(0,1fr) auto;gap:12px;padding:12px 14px;border-left-width:2px;border-radius:13px}.tutor-customization-preview-avatar{width:52px;height:52px;border:0;background:transparent}.tutor-customization-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:10px}.tutor-customization-section{padding:14px;border-radius:13px}.tutor-customization-section-heading{margin-bottom:12px}.tutor-customization-section-heading>span{width:32px;height:32px;border-radius:9px}.tutor-customization-presets,.tutor-customization-text{grid-column:1/-1}.tutor-customization-presets>div:last-child{gap:6px}.tutor-customization-presets button{min-height:78px;padding:10px;border-radius:9px}.tutor-customization-text textarea{min-height:104px}.tutor-customization-actions{margin:0 -20px -20px;padding:10px 20px 14px}@media (max-width:760px){.tutor-customization{width:calc(100% - 20px);padding:14px}.tutor-customization-actions{margin:0 -14px -14px;padding-inline:14px}}@media (max-width:1500px) and (min-width:761px){.tutor-header-context{display:none}.tutor-header-controls .tutor-mode-picker button{width:34px;padding-inline:0;font-size:0}.tutor-mind-map-trigger span,.tutor-personalize-trigger span{display:none}.tutor-mind-map-trigger,.tutor-personalize-trigger{width:38px;justify-content:center;padding-inline:0}}.tutor-chat-footer{display:grid;gap:6px;padding:8px 20px 14px;background:linear-gradient(to bottom,transparent,color-mix(in srgb,var(--chrome-surface) 96%,transparent) 16px)}.tutor-quick-actions{display:grid;width:min(100%,620px);gap:8px;margin:0 auto}.tutor-quick-action-group{display:grid;gap:5px}.tutor-quick-action-group>span{color:var(--subtle-foreground);font-size:.61rem;font-weight:800;letter-spacing:.07em;text-transform:uppercase}.tutor-quick-action-group>div{display:flex;flex-wrap:wrap;gap:6px}.tutor-quick-actions button{display:inline-flex;min-height:30px;align-items:center;gap:5px;padding:0 10px;border:1px solid var(--chrome-border);border-radius:999px;background:var(--surface);color:var(--muted-foreground);font:inherit;font-size:.68rem;font-weight:700;cursor:pointer;transition:border-color var(--motion-fast) ease,color var(--motion-fast) ease,background var(--motion-fast) ease}.tutor-quick-actions button:hover:not(:disabled){border-color:color-mix(in srgb,var(--accent) 45%,var(--chrome-border));background:color-mix(in srgb,var(--accent) 7%,var(--surface));color:var(--accent)}.tutor-quick-actions button:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.tutor-quick-actions button:disabled{cursor:not-allowed;opacity:.55}.tutor-quick-actions button[data-action=photo]{--tool-color:#0e9f9a}.tutor-quick-actions button[data-action=youtube]{--tool-color:#e34b5f}.tutor-quick-actions button[data-action=summary]{--tool-color:#d97706}.tutor-quick-actions button[data-action=quiz]{--tool-color:#6366d8}.tutor-quick-actions button[data-action=simulation]{--tool-color:#2563eb}.tutor-quick-actions button[data-action=cards]{--tool-color:#0b8f78}.tutor-quick-actions button[data-action=vocabulary]{--tool-color:#8b5bc7}.tutor-quick-actions button[data-action=essay]{--tool-color:#d65b72}.tutor-quick-actions button[data-action=steps]{--tool-color:#c17a16}.tutor-quick-actions button[data-action=plan]{--tool-color:#2677c8}.tutor-quick-actions button[data-action]{border-color:color-mix(in srgb,var(--tool-color) 25%,var(--chrome-border));background:color-mix(in srgb,var(--tool-color) 6%,var(--surface));color:color-mix(in srgb,var(--tool-color) 78%,var(--foreground))}.tutor-quick-actions button[data-action] svg{color:var(--tool-color)}.tutor-quick-actions button[data-action]:focus-visible,.tutor-quick-actions button[data-action]:hover:not(:disabled){border-color:color-mix(in srgb,var(--tool-color) 62%,var(--chrome-border));background:color-mix(in srgb,var(--tool-color) 14%,var(--surface));color:var(--foreground);box-shadow:0 3px 10px color-mix(in srgb,var(--tool-color) 18%,transparent)}@media (max-width:540px){.tutor-quick-action-group>div{flex-wrap:nowrap;overflow-x:auto;padding-bottom:2px;scrollbar-width:none}.tutor-quick-actions button{flex:0 0 auto}}.tutor-composer{display:grid;width:min(100%,540px);gap:4px;margin:0 auto;padding:6px;border:1.5px solid var(--chrome-border);border-radius:var(--chrome-control-radius);background:var(--surface-raised);box-shadow:var(--chrome-shadow);transition:border-color var(--motion-fast) ease,box-shadow var(--motion-fast) ease}.tutor-composer:focus-within{border-color:color-mix(in srgb,var(--accent) 55%,var(--chrome-border));box-shadow:var(--chrome-shadow),0 0 0 3px color-mix(in srgb,var(--accent) 12%,transparent)}.tutor-composer textarea{min-height:34px;max-height:100px;padding:6px 8px;border:0;border-radius:0;background:transparent;font-size:.9rem;line-height:1.5;resize:none}.tutor-composer textarea:focus{border:0;background:transparent;box-shadow:none}.tutor-composer-footer{min-height:34px;gap:6px;margin:0}.tutor-composer-footer>span:first-child{color:var(--subtle-foreground);font-size:.62rem}.tutor-composer-footer .primary-button{min-height:34px;padding:0 14px;border-radius:10px;box-shadow:none;font-size:.78rem;font-weight:800;transition:background var(--motion-fast) ease,transform var(--motion-press) var(--ease-out)}.tutor-composer-footer .primary-button:active{transform:scale(.97)}.tutor-attach-button{min-height:34px;border:0;font-size:.76rem}.tutor-stop-button{display:inline-flex;min-height:34px;align-items:center;gap:6px;padding:0 12px;border:1.5px solid color-mix(in srgb,#ef4444 30%,var(--line-soft));border-radius:10px;background:color-mix(in srgb,#ef4444 6%,var(--surface-subtle));color:#dc2626;font:inherit;font-size:.72rem;font-weight:760;transition:background var(--motion-fast) ease}.tutor-stop-button:hover{background:color-mix(in srgb,#ef4444 12%,var(--surface-subtle))}.tutor-stop-button>span{width:8px;height:8px;border-radius:2px;background:#ef4444;animation:tutor-pulse-stop 1.2s ease-in-out infinite}@keyframes tutor-pulse-stop{0%,to{opacity:1}50%{opacity:.4}}.tutor-attachments{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;margin:0}.tutor-attachment{display:grid;min-width:0;grid-template-columns:44px minmax(0,1fr) 28px;align-items:center;gap:8px;padding:6px;border:1px solid var(--line-soft);border-radius:10px;background:var(--surface-subtle);font-size:.72rem}.tutor-attachment-file,.tutor-attachment>img{width:44px;height:44px;border-radius:7px;object-fit:cover}.tutor-attachment-file{display:grid;place-items:center;background:var(--surface);color:var(--accent)}.tutor-attachment>span:nth-child(2){display:grid;min-width:0;gap:2px}.tutor-attachment small,.tutor-attachment strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tutor-attachment small{color:var(--muted-foreground);font-size:.62rem}.tutor-attachment button{width:28px;height:28px}.tutor-action-feedback,.tutor-disabled,.tutor-error{width:min(100%,var(--tutor-reading-width));margin:0 auto}.tutor-disclaimer{margin:0 auto;color:var(--subtle-foreground);font-size:.64rem;text-align:center}[data-appearance-profile=focus] .tutor-workspace{--tutor-sidebar-width:72px;border-radius:4px}[data-appearance-profile=focus] .tutor-conversations h3,[data-appearance-profile=focus] .tutor-sidebar nav button,[data-appearance-profile=focus] .tutor-sidebar-title{font-size:0}[data-appearance-profile=energetic] .tutor-workspace{border-top:5px solid var(--accent)}[data-appearance-profile=energetic] .tutor-message.user{border-color:var(--accent)}[data-appearance-profile=oled] .tutor-chat,[data-appearance-profile=oled] .tutor-sidebar,[data-appearance-profile=oled] .tutor-workspace{background:#050505;border-color:#252525}[data-appearance-profile=oled] .tutor-composer{border-radius:6px;background:#0d0d0d}[data-theme=oled] .tutor-message.assistant{background:transparent;border-color:transparent}[data-theme=oled] .tutor-composer,[data-theme=oled] .tutor-message.user{background:var(--oled-raised)}@media (max-width:1120px) and (min-width:768px){.tutor-workspace{--tutor-sidebar-width:220px}.tutor-header-context{display:none}.tutor-header-controls .tutor-mode-picker button{width:32px;padding:0;font-size:0}}@media (max-width:1320px) and (min-width:768px){.tutor-header-context{display:none}.tutor-header-controls .tutor-usage{min-width:0}.tutor-header-controls .tutor-mode-picker button{width:32px;padding:0;font-size:0}.tutor-personalize-trigger span{display:none}.tutor-guide-trigger,.tutor-personalize-trigger{width:40px;justify-content:center;padding:0}.tutor-guide-trigger span{display:none}}.tutor-guide-trigger,.tutor-personalize-trigger{display:inline-flex;min-height:38px;align-items:center;gap:7px;padding:0 11px;border:1px solid var(--chrome-border);border-radius:var(--chrome-control-radius);background:var(--surface-subtle);color:var(--foreground);font:inherit;font-size:.74rem;font-weight:800;cursor:pointer;transition:border-color var(--motion-fast) ease,color var(--motion-fast) ease}.tutor-guide-trigger:hover,.tutor-guide-trigger[aria-expanded=true],.tutor-personalize-trigger:hover,.tutor-personalize-trigger[aria-expanded=true]{border-color:color-mix(in srgb,var(--accent) 56%,var(--chrome-border));color:var(--accent)}.tutor-mind-map-trigger{display:inline-flex;min-height:38px;align-items:center;gap:7px;padding:0 11px;border:1px solid color-mix(in srgb,var(--accent) 32%,var(--chrome-border));border-radius:var(--chrome-control-radius);background:color-mix(in srgb,var(--accent) 7%,var(--surface-subtle));color:var(--accent);font:inherit;font-size:.74rem;font-weight:800;cursor:pointer;transition:background var(--motion-fast) ease,border-color var(--motion-fast) ease}.tutor-mind-map-trigger:hover:not(:disabled),.tutor-mind-map-trigger[aria-expanded=true]{background:color-mix(in srgb,var(--accent) 13%,var(--surface));border-color:var(--accent)}.tutor-mind-map-trigger:disabled{opacity:.48;cursor:not-allowed}.tutor-mind-map{display:grid;align-self:start;gap:16px;width:min(100% - 40px,980px);margin:20px auto 0;padding:24px;border:1px solid var(--chrome-border);border-radius:var(--chrome-radius);background:var(--surface);box-shadow:var(--chrome-shadow)}.tutor-mind-map-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.tutor-mind-map-header .eyebrow{display:inline-flex;align-items:center;gap:6px;color:var(--accent)}.tutor-mind-map-header h2,.tutor-mind-map-header p{margin:0}.tutor-mind-map-header h2{margin-top:4px;font-size:clamp(1.4rem,3vw,2rem);letter-spacing:-.04em;font-weight:800}.tutor-mind-map-header p{max-width:560px;margin-top:5px;color:var(--muted-foreground);font-size:.84rem;line-height:1.5}.tutor-mind-map-close{display:grid;width:38px;height:38px;place-items:center;flex:0 0 auto;border:1px solid var(--line-soft);border-radius:10px;background:transparent;color:var(--muted-foreground);cursor:pointer;transition:color var(--motion-fast) ease,background var(--motion-fast) ease}.tutor-mind-map-close:hover{color:var(--foreground);background:var(--surface-subtle)}.tutor-mind-map-empty{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;padding:18px;border:1px solid color-mix(in srgb,var(--accent) 25%,var(--line-soft));border-radius:14px;background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 8%,var(--surface-subtle)),var(--surface-subtle));transition:border-color var(--motion-fast) ease}.tutor-mind-map-empty:hover{border-color:color-mix(in srgb,var(--accent) 40%,var(--line-soft))}.tutor-mind-map-empty>span{display:grid;width:46px;height:46px;place-items:center;border-radius:13px;background:var(--surface);color:var(--accent)}.tutor-mind-map-empty strong{display:block;font-size:.88rem}.tutor-mind-map-empty p{margin:3px 0 0;color:var(--muted-foreground);font-size:.76rem;line-height:1.45}.tutor-mind-map-empty .primary-button{min-height:42px;white-space:nowrap}.tutor-mind-map-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--muted-foreground);font-size:.73rem;font-weight:750}.tutor-mind-map-toolbar button{display:inline-flex;min-height:34px;align-items:center;gap:6px;padding:0 10px;border:1px solid var(--line-soft);border-radius:9px;background:var(--surface-subtle);color:var(--foreground);font:inherit;font-size:.72rem;font-weight:800;cursor:pointer;transition:border-color var(--motion-fast) ease,color var(--motion-fast) ease,transform var(--motion-press) var(--ease-out)}.tutor-mind-map-toolbar button:hover{border-color:var(--accent);color:var(--accent)}.tutor-mind-map-toolbar button:hover:not(:disabled){transform:translateY(-1px)}.tutor-mind-map-toolbar button:active:not(:disabled){transform:scale(.97)}.tutor-mind-map-toolbar button:disabled{opacity:.55;cursor:not-allowed}.tutor-mind-map-canvas{position:relative;display:grid;gap:22px;padding:24px;overflow:hidden;border:1px solid var(--line-soft);border-radius:18px;background:radial-gradient(circle at 50% 0,color-mix(in srgb,var(--accent) 12%,transparent),transparent 44%),var(--surface-subtle);transition:border-color var(--motion-fast) ease}.tutor-mind-map-canvas:hover{border-color:color-mix(in srgb,var(--accent) 30%,var(--line-soft))}.tutor-mind-map-canvas:before{position:absolute;top:110px;right:12%;left:12%;height:1px;background:color-mix(in srgb,var(--accent) 27%,var(--line-soft));content:""}.tutor-mind-map-core{position:relative;z-index:1;display:grid;width:min(100%,480px);justify-self:center;gap:4px;padding:16px 20px;border:1px solid color-mix(in srgb,var(--accent) 48%,var(--line-soft));border-radius:15px;background:var(--surface);box-shadow:0 12px 30px color-mix(in srgb,var(--accent) 11%,transparent);text-align:center}.tutor-mind-map-core small{color:var(--accent);font-size:.62rem;font-weight:850;letter-spacing:.08em}.tutor-mind-map-core strong{font-size:clamp(1rem,2vw,1.23rem);letter-spacing:-.02em}.tutor-mind-map-core span{color:var(--muted-foreground);font-size:.69rem}.tutor-mind-map-branches{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.tutor-mind-map-branch{min-width:0;padding:13px;border:1px solid var(--line-soft);border-top:3px solid var(--branch-color);border-radius:12px;background:var(--surface);transition:border-color var(--motion-fast) ease,box-shadow var(--motion-fast) ease}.tutor-mind-map-branch:hover{border-color:color-mix(in srgb,var(--branch-color) 50%,var(--line-soft));box-shadow:0 4px 12px color-mix(in srgb,var(--branch-color) 10%,transparent)}.tutor-mind-map-branch.blue{--branch-color:#3979d8}.tutor-mind-map-branch.green{--branch-color:#2f9e75}.tutor-mind-map-branch.amber{--branch-color:#d99732}.tutor-mind-map-branch.violet{--branch-color:#8661d6}.tutor-mind-map-branch.cyan{--branch-color:#229db5}.tutor-mind-map-branch.rose{--branch-color:#cb5e84}.tutor-mind-map-branch header{display:flex;align-items:center;gap:7px}.tutor-mind-map-branch header i{width:8px;height:8px;flex:0 0 auto;border-radius:50%;background:var(--branch-color)}.tutor-mind-map-branch h3{margin:0;font-size:.8rem;line-height:1.25;font-weight:800}.tutor-mind-map-branch ul{display:grid;gap:5px;margin:8px 0 0;padding-left:15px}.tutor-mind-map-branch li{font-size:.78rem;line-height:1.45;color:var(--muted-foreground)}.tutor-customization{display:grid;gap:18px;width:min(100% - 40px,920px);margin:20px auto;padding:24px;border:1px solid var(--chrome-border);border-radius:var(--chrome-radius);background:var(--surface);box-shadow:var(--chrome-shadow)}.tutor-customization>header{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;padding-bottom:4px}.tutor-customization h2,.tutor-customization p{margin:0}.tutor-customization>header h2{margin-top:4px;font-size:clamp(1.4rem,3vw,1.9rem);letter-spacing:-.04em}.tutor-customization>header p{max-width:660px;margin-top:6px;color:var(--muted-foreground);font-size:.88rem;line-height:1.55}.tutor-customization>header>button{display:grid;width:40px;height:40px;place-items:center;flex:0 0 auto;border:1px solid var(--line-soft);border-radius:var(--chrome-control-radius);background:transparent;color:var(--muted-foreground);cursor:pointer;transition:color var(--motion-fast) ease,background var(--motion-fast) ease}.tutor-customization>header>button:hover{border-color:var(--chrome-border);background:var(--surface-subtle);color:var(--foreground)}.tutor-customization-preview{display:grid;grid-template-columns:64px minmax(0,1fr) auto;align-items:center;gap:16px;padding:16px;border:1px solid color-mix(in srgb,var(--accent) 24%,var(--line-soft));border-left-width:3px;border-radius:var(--chrome-control-radius);background:color-mix(in srgb,var(--accent) 6%,var(--surface-subtle))}.tutor-customization-preview-avatar{display:grid;width:64px;height:64px;place-items:center;overflow:hidden;border:1px solid color-mix(in srgb,var(--accent) 44%,var(--chrome-border));border-radius:50%;background:var(--surface);color:var(--accent)}.tutor-customization-avatar img,.tutor-customization-preview-avatar img{width:100%;height:100%;object-fit:cover}.tutor-customization-preview small{color:var(--accent);font-size:.66rem;font-weight:850;letter-spacing:.06em;text-transform:uppercase}.tutor-customization-preview strong{display:block;margin-top:2px;font-size:1rem}.tutor-customization-preview p{margin-top:3px;color:var(--muted-foreground);font-size:.84rem;line-height:1.45}.tutor-customization-preview>svg{color:var(--accent)}.tutor-customization-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.tutor-customization-section{min-width:0;padding:16px;border:1px solid var(--line-soft);border-radius:var(--chrome-control-radius);background:var(--surface-subtle);transition:border-color var(--motion-fast) ease}.tutor-customization-section:hover{border-color:color-mix(in srgb,var(--accent) 20%,var(--line-soft))}.tutor-customization-section-heading{display:flex;align-items:flex-start;gap:11px;margin-bottom:16px}.tutor-customization-section-heading>span{display:grid;width:36px;height:36px;place-items:center;flex:0 0 auto;border-radius:10px;background:color-mix(in srgb,var(--accent) 10%,var(--surface));color:var(--accent)}.tutor-customization-section-heading h3{margin:0;font-size:.92rem;letter-spacing:-.01em}.tutor-customization-section-heading p{margin:3px 0 0;color:var(--muted-foreground);font-size:.72rem;line-height:1.45}.tutor-customization-label{display:block;margin-bottom:10px;color:var(--muted-foreground);font-size:.7rem;font-weight:850;letter-spacing:.06em;text-transform:uppercase}.tutor-customization-avatar{display:flex;align-items:center;gap:12px}.tutor-customization-avatar>button{display:grid;width:64px;height:64px;place-items:center;flex:0 0 auto;overflow:hidden;border:1px solid var(--chrome-border);border-radius:50%;background:var(--surface);color:var(--accent);cursor:pointer;transition:border-color var(--motion-fast) ease,transform var(--motion-press) var(--ease-out)}.tutor-customization-avatar>button:active{transform:scale(.95)}.tutor-customization-avatar>div{display:grid;min-width:0;gap:3px}.tutor-customization-avatar strong{font-size:.88rem}.tutor-customization-avatar small{color:var(--muted-foreground);font-size:.7rem;line-height:1.4}.tutor-customization-avatar>div>span{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}.tutor-customization-avatar>div button{display:inline-flex;min-height:28px;align-items:center;gap:4px;padding:0;border:0;background:transparent;color:var(--accent);font:inherit;font-size:.7rem;font-weight:800;cursor:pointer}.tutor-customization-avatar>div button:disabled{color:var(--muted-foreground);cursor:not-allowed}.tutor-customization-response .tutor-mode-picker{display:grid;gap:8px;margin:0;padding:0;border:0}.tutor-customization-response .tutor-mode-picker>span{color:var(--foreground);font-size:.8rem;font-weight:760}.tutor-customization-response .tutor-mode-picker>div{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.tutor-customization-response .tutor-mode-picker button{display:inline-flex;min-height:44px;align-items:center;justify-content:center;gap:6px;padding:8px;border:1px solid var(--line-soft);border-radius:9px;background:var(--surface);color:var(--muted-foreground);font:inherit;font-size:.72rem;font-weight:750;cursor:pointer;transition:border-color var(--motion-fast) ease,background var(--motion-fast) ease,color var(--motion-fast) ease,transform var(--motion-press) var(--ease-out)}.tutor-customization-response .tutor-mode-picker button:active{transform:scale(.97)}.tutor-customization-response .tutor-mode-picker button:hover,.tutor-customization-response .tutor-mode-picker button[aria-pressed=true]{border-color:color-mix(in srgb,var(--accent) 50%,var(--line-soft));background:color-mix(in srgb,var(--accent) 8%,var(--surface));color:var(--accent)}.tutor-customization-presets{display:grid;gap:0}.tutor-customization-presets>div:first-child{display:flex;align-items:end;justify-content:space-between;gap:12px;margin-bottom:12px}.tutor-customization-presets>div:first-child small{color:var(--muted-foreground);font-size:.72rem}.tutor-customization-presets>div:last-child{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.tutor-customization-presets button{display:grid;min-height:96px;align-content:start;gap:9px;padding:12px;border:1px solid var(--line-soft);border-radius:10px;background:var(--surface);color:var(--foreground);text-align:left;cursor:pointer;transition:border-color var(--motion-fast) ease,background var(--motion-fast) ease,transform var(--motion-press) var(--ease-out)}.tutor-customization-presets button:hover:not([aria-pressed=true]){transform:translateY(-1px)}.tutor-customization-presets button:active:not([aria-pressed=true]){transform:scale(.98)}.tutor-customization-presets button:hover,.tutor-customization-presets button[aria-pressed=true]{border-color:color-mix(in srgb,var(--accent) 55%,var(--line-soft));background:color-mix(in srgb,var(--accent) 7%,var(--surface))}.tutor-customization-presets button>svg{color:var(--accent)}.tutor-customization-presets button>span{display:grid;gap:2px}.tutor-customization-presets button strong{font-size:.78rem}.tutor-customization-presets button small{color:var(--muted-foreground);font-size:.67rem;line-height:1.3}.tutor-customization-text{display:grid;gap:10px}.tutor-customization-text .tutor-customization-section-heading{margin-bottom:4px}.tutor-customization-text label{color:var(--foreground);font-weight:800;font-size:.8rem}.tutor-customization-text textarea{min-height:128px;padding:12px;border-color:var(--line-soft);resize:vertical;background:var(--surface);line-height:1.55}.tutor-customization-text>div{display:flex;justify-content:space-between;gap:12px}.tutor-customization-text small{color:var(--muted-foreground);font-size:.72rem}.tutor-customization-actions{display:flex;align-items:center;justify-content:space-between;gap:16px;position:sticky;bottom:0;z-index:2;padding-top:12px;border-top:1px solid var(--line-soft);background:var(--surface)}.tutor-customization-actions p{color:var(--muted-foreground);font-size:.78rem}.tutor-customization-actions .primary-button{min-height:44px}.tutor-military-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.tutor-military-option{position:relative;display:grid;min-width:0;min-height:86px;grid-template-columns:48px minmax(0,1fr) 18px;align-items:center;gap:12px;padding:12px;border:1px solid var(--line-soft);border-radius:10px;background:var(--surface);color:var(--foreground);text-align:left;cursor:pointer;transition:border-color var(--motion-fast) ease,background var(--motion-fast) ease,box-shadow var(--motion-fast) ease,transform var(--motion-press) var(--ease-out)}.tutor-military-option:hover:not([aria-pressed=true]){transform:translateY(-1px)}.tutor-military-option:active:not([aria-pressed=true]){transform:scale(.98)}.tutor-military-option:hover,.tutor-military-option[aria-pressed=true]{border-color:color-mix(in srgb,var(--accent) 56%,var(--line-soft));background:color-mix(in srgb,var(--accent) 6%,var(--surface))}.tutor-military-option[aria-pressed=true]{box-shadow:inset 3px 0 0 var(--accent)}.tutor-military-option .military-exam-icon,.tutor-military-option-icon{display:grid;width:52px;height:52px;place-items:center;overflow:hidden;border:1px solid var(--line-soft);border-radius:12px;background:color-mix(in srgb,var(--surface) 88%,var(--surface-subtle));color:var(--accent)}.tutor-military-option .military-exam-icon img{width:44px;height:44px;object-fit:contain}.tutor-military-option>span:nth-child(2){display:grid;min-width:0;gap:2px}.tutor-military-option strong{font-size:.82rem}.tutor-military-option em,.tutor-military-option small{overflow:hidden;color:var(--muted-foreground);font-size:.67rem;font-style:normal;line-height:1.35;text-overflow:ellipsis}.tutor-military-check{width:18px;color:var(--accent)}.tutor-chat-customizing{grid-template-rows:auto minmax(0,1fr);overflow-y:auto}.tutor-chat-customizing .tutor-customization{align-self:start}.tutor-chat-mind-map{grid-template-rows:auto minmax(0,1fr);overflow-y:auto}.tutor-chat-mind-map .tutor-mind-map{align-self:start;margin-bottom:24px}.tutor-guide{display:grid;align-self:start;gap:18px;width:min(100% - 40px,980px);margin:20px auto;padding:24px;border:1px solid var(--chrome-border);border-radius:var(--chrome-radius);background:var(--surface);box-shadow:var(--chrome-shadow)}.tutor-guide-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.tutor-guide-header h2,.tutor-guide-header p{margin:0}.tutor-guide-header h2{margin-top:3px;font-size:clamp(1.35rem,2.4vw,1.85rem);letter-spacing:-.035em}.tutor-guide-header p{max-width:620px;margin-top:5px;color:var(--muted-foreground);font-size:.86rem;line-height:1.5}.tutor-guide-skip{flex:0 0 auto;min-height:38px;padding:0 10px;border:0;background:transparent;color:var(--muted-foreground);font:inherit;font-size:.75rem;font-weight:750;cursor:pointer}.tutor-guide-skip:hover{color:var(--foreground)}.tutor-guide-progress{display:grid;gap:7px;color:var(--muted-foreground);font-size:.68rem;font-weight:800}.tutor-guide-progress:after{width:100%;height:4px;border-radius:999px;background:var(--surface-subtle);content:""}.tutor-guide-progress i{z-index:1;height:4px;margin-top:-11px;border-radius:999px;background:var(--accent);transition:width .18s ease}.tutor-guide-layout{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:20px}.tutor-guide-content{display:grid;align-content:start;gap:16px;min-width:0}.tutor-guide-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.tutor-guide-exam,.tutor-guide-option{position:relative;display:grid;min-width:0;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:11px;padding:13px;border:1px solid var(--line-soft);border-radius:var(--chrome-control-radius);background:var(--surface-subtle);color:var(--foreground);text-align:left;cursor:pointer;transition:border-color var(--motion-fast) ease,background var(--motion-fast) ease}.tutor-guide-exam:hover,.tutor-guide-exam[aria-pressed=true],.tutor-guide-option:hover,.tutor-guide-option[aria-pressed=true]{border-color:color-mix(in srgb,var(--accent) 58%,var(--line-soft));background:color-mix(in srgb,var(--accent) 7%,var(--surface))}.tutor-guide-option>svg:first-child{width:20px;color:var(--accent)}.tutor-guide-exam>span,.tutor-guide-option>span{display:grid;min-width:0;gap:3px}.tutor-guide-exam strong,.tutor-guide-option strong{font-size:.82rem}.tutor-guide-exam em,.tutor-guide-exam small,.tutor-guide-option small{color:var(--muted-foreground);font-size:.68rem;font-style:normal;line-height:1.35}.tutor-guide-check{width:17px;color:var(--accent)}.tutor-guide-exams{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.tutor-guide-exam .military-exam-icon{display:grid;width:44px;height:44px;place-items:center;overflow:hidden;border-radius:50%;background:var(--surface);color:var(--accent)}.tutor-guide-exam .military-exam-icon img{width:36px;height:36px}.tutor-guide-subjects{display:grid;gap:9px}.tutor-guide-subjects>strong{font-size:.78rem}.tutor-guide-subjects>div{display:flex;flex-wrap:wrap;gap:7px}.tutor-guide-subjects button{min-height:36px;padding:0 11px;border:1px solid var(--line-soft);border-radius:999px;background:var(--surface);color:var(--muted-foreground);font:inherit;font-size:.72rem;font-weight:750;cursor:pointer}.tutor-guide-subjects button[aria-pressed=true]{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,var(--surface));color:var(--accent)}.tutor-guide .tutor-mode-picker{margin:0}.tutor-guide-durations{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.tutor-guide-durations button{display:grid;min-height:96px;align-content:center;justify-items:center;gap:5px;padding:10px;border:1px solid var(--line-soft);border-radius:var(--chrome-control-radius);background:var(--surface-subtle);color:var(--foreground);font:inherit;cursor:pointer}.tutor-guide-durations button svg{width:19px;color:var(--accent)}.tutor-guide-durations button strong{font-size:.77rem}.tutor-guide-durations button small{color:var(--muted-foreground);font-size:.65rem}.tutor-guide-durations button[aria-pressed=true]{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,var(--surface))}.tutor-guide-tip{display:flex;gap:10px;padding:12px;border-radius:var(--chrome-control-radius);background:color-mix(in srgb,var(--accent) 7%,var(--surface-subtle))}.tutor-guide-tip svg{flex:0 0 auto;color:var(--accent)}.tutor-guide-tip p{display:grid;gap:3px;margin:0;color:var(--muted-foreground);font-size:.75rem;line-height:1.4}.tutor-guide-tip strong{color:var(--foreground)}.tutor-guide-summary{align-self:stretch;padding:16px;border-left:1px solid var(--line-soft)}.tutor-guide-summary>span{color:var(--accent);font-size:.69rem;font-weight:850;letter-spacing:.07em;text-transform:uppercase}.tutor-guide-summary dl{display:grid;gap:12px;margin:16px 0 0}.tutor-guide-summary dl div{display:grid;gap:2px}.tutor-guide-summary dt{color:var(--muted-foreground);font-size:.66rem}.tutor-guide-summary dd{margin:0;font-size:.77rem;font-weight:750;line-height:1.35}.tutor-guide-error{min-height:20px;margin:0;color:var(--danger);font-size:.73rem}.tutor-guide-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line-soft);padding-top:14px}.tutor-guide-actions button{display:inline-flex;min-height:42px;align-items:center;gap:6px}.tutor-guide-actions button svg{width:17px}.tutor-guide button:focus-visible,.tutor-guide-trigger:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 30%,transparent);outline-offset:2px}.tutor-customization-text .tutor-guide-exams{grid-template-columns:repeat(2,minmax(0,1fr))}@media (max-width:900px){.tutor-customization-grid{grid-template-columns:1fr}.tutor-customization-presets>div:last-child{grid-template-columns:repeat(2,minmax(0,1fr))}.tutor-guide-layout,.tutor-military-options{grid-template-columns:1fr}.tutor-guide-summary{border-top:1px solid var(--line-soft);border-left:0}}@media (max-width:767px){.tutor-mobile-drawer-backdrop{transition:opacity .24s ease}@starting-style{.tutor-mobile-drawer-backdrop{opacity:0}}}@media (max-width:767px){.tutor-page{min-height:0!important;padding:0!important}.tutor-workspace{display:block;min-height:0!important;max-height:none!important;margin:0;border:0;border-radius:0;box-shadow:none;overflow:visible}.tutor-sidebar{display:none}.tutor-chat{min-height:0!important;max-height:none!important;grid-template-rows:auto minmax(0,1fr) auto}.tutor-chat-header{position:sticky;top:0;z-index:8;display:grid;gap:9px;min-height:0;padding:10px 12px 9px;background:color-mix(in srgb,var(--chrome-surface) 92%,transparent);backdrop-filter:blur(16px)}.tutor-chat-identity{min-height:38px;gap:8px}.tutor-chat-identity .tutor-assistant-icon,.tutor-chat-identity small{display:none}.tutor-chat-identity h1{max-width:calc(100vw - 118px);font-size:.94rem}.tutor-title-row{gap:2px}.tutor-title-row button{width:30px;height:30px}.tutor-title-input{width:min(62vw,260px)}.tutor-history-trigger{display:grid;width:38px;height:38px;border-radius:11px}.tutor-header-controls{display:grid;width:100%;grid-template-columns:auto minmax(0,1fr) 38px 38px;align-items:center;gap:6px;overflow:visible}.tutor-header-context,.tutor-header-new{display:none}.tutor-header-controls .tutor-usage{min-width:0;padding:0 8px;min-height:32px}.tutor-header-controls .tutor-usage-body{gap:3px}.tutor-header-controls .tutor-usage-number{font-size:.72rem}.tutor-header-controls .tutor-usage-suffix{display:none}.tutor-header-controls .tutor-mode-picker{width:auto;min-width:0}.tutor-header-controls .tutor-mode-picker>div{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:2px;padding:3px;border-radius:11px}.tutor-header-controls .tutor-mode-picker button{width:100%;min-height:34px;padding:0;border-radius:8px;font-size:0}.tutor-mind-map-trigger,.tutor-personalize-trigger{display:grid;width:38px;min-height:38px;height:38px;place-items:center;padding:0;border-radius:11px}.tutor-mind-map-trigger span,.tutor-personalize-trigger span{display:none}.tutor-messages{min-height:0;padding:20px 14px 100px;scroll-padding-bottom:120px}.tutor-message-stack{gap:22px}.tutor-message.assistant{grid-template-columns:36px minmax(0,1fr);gap:10px}.tutor-message.assistant .tutor-message-icon{width:36px;height:36px;border-radius:9px}.tutor-message.user{width:calc(100% - 18px);padding:12px 14px;border-radius:16px 16px 5px 16px}.tutor-message p,.tutor-rich-text p{font-size:.95rem;line-height:1.65}.tutor-rich-text h2{margin-top:18px;font-size:1.1rem}.tutor-message-actions{flex-wrap:wrap;margin-top:10px;opacity:1}.tutor-message-actions button{min-height:30px;padding:4px 8px}.tutor-empty{display:grid;min-height:60vh;align-content:center;justify-items:center;padding:12px 2px 20px;text-align:center}.tutor-empty-icon{width:52px;height:52px;border-radius:15px}.tutor-empty h2{max-width:300px;margin-top:14px;font-size:clamp(1.7rem,8.5vw,2.1rem);line-height:1.08}.tutor-empty>p{max-width:330px;margin-top:11px;font-size:.9rem;line-height:1.55}.tutor-empty-suggestions{width:100%;grid-template-columns:1fr;gap:9px;margin-top:24px}.tutor-empty-suggestions button{grid-template-columns:36px minmax(0,1fr) 16px;min-height:60px;gap:11px;padding:11px 12px;border-radius:14px}.tutor-suggestion-icon{width:36px;height:36px;border-radius:11px}.tutor-suggestion-arrow{opacity:.7}.tutor-chat-footer{position:sticky;bottom:0;z-index:7;gap:6px;padding:10px 12px max(10px,env(safe-area-inset-bottom));border-top:1px solid color-mix(in srgb,var(--chrome-border) 72%,transparent);background:color-mix(in srgb,var(--chrome-surface) 94%,transparent);backdrop-filter:blur(16px)}.tutor-composer{width:calc(100% - 16px);gap:3px;padding:5px;border-radius:13px;box-shadow:0 4px 14px color-mix(in srgb,#000 7%,transparent)}.tutor-composer>label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.tutor-composer textarea{min-height:32px;max-height:80px;padding:5px 7px;font-size:.88rem;line-height:1.4}.tutor-composer-footer{min-height:32px;gap:5px}.tutor-composer-footer>span:first-child{display:none}.tutor-composer-footer>span:nth-child(2){margin-right:auto;font-size:.62rem}.tutor-composer-footer .primary-button,.tutor-composer-footer .tutor-attach-button{width:34px;min-height:34px;height:34px;justify-content:center;padding:0;border-radius:10px;font-size:0}.tutor-composer-footer .primary-button svg{width:16px;height:16px}.tutor-stop-button{min-height:34px;padding:0 10px;font-size:.7rem}.tutor-disclaimer{display:none}.tutor-attachments{grid-template-columns:1fr}.tutor-guide-trigger{display:inline-flex;min-height:38px;margin-left:auto}.tutor-guide-trigger span{display:inline}.tutor-guide{width:calc(100% - 24px);gap:14px;margin:12px auto;padding:16px}.tutor-guide-header{display:grid;gap:8px}.tutor-guide-skip{justify-self:start;padding-left:0}.tutor-guide-exams,.tutor-guide-options{grid-template-columns:1fr}.tutor-guide-durations{grid-template-columns:repeat(2,minmax(0,1fr))}.tutor-guide-summary{padding:14px 0 0}.tutor-mind-map-trigger span{display:none}.tutor-mind-map-trigger{width:38px;justify-content:center;padding:0}.tutor-mind-map{width:calc(100% - 24px);gap:14px;margin:12px auto 0;padding:16px}.tutor-mind-map-header{gap:12px}.tutor-mind-map-header h2{font-size:1.2rem}.tutor-mind-map-header p{font-size:.78rem}.tutor-mind-map-empty{grid-template-columns:auto minmax(0,1fr);padding:14px;gap:12px}.tutor-mind-map-empty>span{width:40px;height:40px;border-radius:11px}.tutor-mind-map-empty strong{font-size:.82rem}.tutor-mind-map-empty p{font-size:.72rem}.tutor-mind-map-empty .primary-button{grid-column:1/-1;width:100%;justify-content:center;min-height:40px}.tutor-mind-map-toolbar{flex-wrap:wrap;gap:8px}.tutor-mind-map-toolbar button{min-height:32px;padding:0 8px;font-size:.68rem}.tutor-mind-map-canvas{padding:14px;border-radius:14px}.tutor-mind-map-canvas:before{top:101px;left:8%;right:8%}.tutor-mind-map-core{padding:14px;border-radius:12px}.tutor-mind-map-core strong{font-size:.95rem}.tutor-mind-map-branches{grid-template-columns:1fr}.tutor-mind-map-branch{padding:12px;border-radius:10px}.tutor-mind-map-branch h3{font-size:.76rem}.tutor-mind-map-branch li{font-size:.73rem}.tutor-customization{width:calc(100% - 24px);gap:14px;margin:12px auto;padding:16px}.tutor-customization>header{gap:16px}.tutor-customization>header h2{font-size:1.2rem}.tutor-customization>header p{font-size:.82rem}.tutor-customization-preview{grid-template-columns:48px minmax(0,1fr);padding:12px;gap:12px}.tutor-customization-preview-avatar{width:48px;height:48px}.tutor-customization-preview>svg{display:none}.tutor-customization-preview strong{font-size:.88rem}.tutor-customization-preview p{font-size:.78rem}.tutor-customization-grid{grid-template-columns:1fr;gap:10px}.tutor-customization-section{padding:14px}.tutor-customization-section-heading{gap:10px;margin-bottom:12px}.tutor-customization-section-heading>span{width:32px;height:32px;border-radius:9px}.tutor-customization-section-heading h3{font-size:.85rem}.tutor-customization-avatar{gap:10px}.tutor-customization-avatar>button{width:56px;height:56px}.tutor-customization-avatar strong{font-size:.82rem}.tutor-customization-avatar small{font-size:.68rem}.tutor-customization-avatar>div>span{gap:8px}.tutor-customization-avatar>div button{min-height:28px;font-size:.68rem}.tutor-customization-response .tutor-mode-picker>div{gap:6px}.tutor-customization-response .tutor-mode-picker button{min-height:40px;font-size:.7rem}.tutor-customization-presets>div:first-child{display:grid;gap:3px}.tutor-customization-presets>div:last-child{grid-template-columns:1fr 1fr}.tutor-customization-presets button{min-height:80px;padding:10px;border-radius:10px}.tutor-customization-presets button strong{font-size:.72rem}.tutor-customization-presets button small{font-size:.62rem}.tutor-military-options{grid-template-columns:1fr;gap:6px}.tutor-military-option{min-height:72px;padding:10px;gap:10px}.tutor-military-option .military-exam-icon,.tutor-military-option-icon{width:44px;height:44px}.tutor-military-option strong{font-size:.78rem}.tutor-customization-text textarea{min-height:100px;font-size:.88rem}.tutor-customization-actions{padding-top:10px}.tutor-customization-actions .primary-button{width:100%;min-height:44px;justify-content:center}.tutor-mobile-drawer-layer{grid-template-columns:minmax(0,1fr) min(92vw,360px)}.tutor-mobile-drawer{border-left:1px solid var(--line-soft);box-shadow:-18px 0 40px color-mix(in srgb,#000 18%,transparent)}}@media (max-width:380px){.tutor-guide-trigger span,.tutor-personalize-trigger span{display:none}.tutor-guide-trigger,.tutor-personalize-trigger{width:38px;justify-content:center;padding:0}}@media (prefers-contrast:more){.tutor-guide-durations button,.tutor-guide-exam,.tutor-guide-option,.tutor-guide-subjects button{border-width:2px}}@media (prefers-reduced-motion:reduce){.tutor-guide-progress i{transition:none}.tutor-mobile-drawer{transition:opacity .15s ease;transform:none}.tutor-message-actions{transition:none}}.profile-tutor-page{--kora-ai-bg:#07111f;--kora-ai-surface:#0d1828;--kora-ai-surface-secondary:#111f32;--kora-ai-border:rgb(255 255 255/7%);--kora-ai-primary:#2563eb;background:var(--kora-ai-bg)}.profile-tutor-page .tutor-workspace{width:100%;max-width:none;min-height:calc(100dvh - 32px);border:1px solid var(--kora-ai-border);border-radius:16px;background:var(--kora-ai-bg);box-shadow:none}.profile-tutor-page .tutor-sidebar{width:248px;background:var(--kora-ai-surface);border-color:var(--kora-ai-border)}.profile-tutor-page .tutor-chat{min-width:0;background:var(--kora-ai-bg)}.profile-tutor-page .tutor-chat-header{min-height:68px;border-color:var(--kora-ai-border);background:var(--kora-ai-surface)}.profile-tutor-page .tutor-header-controls{gap:8px}.profile-tutor-page .tutor-header-context{max-width:210px}.profile-tutor-page .tutor-header-context strong{font-size:.8rem}.profile-tutor-page .tutor-message-stack{width:min(100%,860px);gap:22px}.profile-tutor-page .tutor-messages{padding-inline:clamp(16px,4vw,48px)}.profile-tutor-page .tutor-message.user{width:min(76%,620px);padding:14px 16px;border:1px solid rgb(59 130 246/45%);border-radius:16px 16px 5px 16px;background:var(--kora-ai-primary);color:#fff}.profile-tutor-page .tutor-message.assistant>div{border-color:var(--kora-ai-border);border-radius:12px 18px 18px 18px;background:var(--kora-ai-surface);box-shadow:none}.profile-tutor-page .tutor-message-actions button{min-height:32px;border-radius:8px}.profile-tutor-page .tutor-quick-actions{width:min(100%,860px);margin-inline:auto}.profile-tutor-page .tutor-composer{width:min(100%,860px);border-color:rgb(59 130 246/35%);border-radius:18px;background:var(--kora-ai-surface);box-shadow:none}.profile-tutor-page .tutor-composer-footer .primary-button{border-radius:999px;background:var(--kora-ai-primary)}.profile-tutor-page .tutor-sidebar-brand{margin-bottom:14px}@media (min-width:768px) and (max-width:1279px){.profile-tutor-page .tutor-workspace{grid-template-columns:minmax(0,1fr)}.profile-tutor-page .tutor-sidebar{display:none}.profile-tutor-page .tutor-history-trigger{display:grid}}@media (max-width:767px){.profile-tutor-page{padding:0}.profile-tutor-page .tutor-workspace{min-height:calc(100dvh - 68px);border:0;border-radius:0}.profile-tutor-page .tutor-chat-header{min-height:60px;padding-inline:12px}.profile-tutor-page .tutor-header-context,.profile-tutor-page .tutor-header-controls .tutor-usage,.profile-tutor-page .tutor-mind-map-trigger span,.profile-tutor-page .tutor-personalize-trigger span{display:none}.profile-tutor-page .tutor-header-controls{gap:4px}.profile-tutor-page .tutor-header-new,.profile-tutor-page .tutor-personalize-trigger{width:40px;min-height:40px;justify-content:center;padding:0}.profile-tutor-page .tutor-message.user{width:min(85%,620px)}.profile-tutor-page .tutor-message p,.profile-tutor-page .tutor-rich-text p{font-size:15px;line-height:1.6}.profile-tutor-page .tutor-composer{width:100%;border-radius:18px}}@media (prefers-reduced-motion:reduce){.profile-tutor-page *,.profile-tutor-page :after,.profile-tutor-page :before{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important}}.app-frame:has(.profile-tutor-page)>.workspace-topbar{display:none}.app-frame:has(.profile-tutor-page)>.main-content{padding-top:0}.app-frame:has(.profile-tutor-page) .sidebar .duo-sidebar-progress,.app-frame:has(.profile-tutor-page) .sidebar .shell-status,.app-frame:has(.profile-tutor-page) .sidebar .sidebar-actions{display:none}.profile-tutor-page{padding:0}.profile-tutor-page .tutor-workspace{min-height:100dvh;border:0;border-radius:0}.profile-tutor-page .tutor-empty{min-height:0;height:auto;padding:clamp(28px,8vh,72px) 20px 24px}.profile-tutor-page .tutor-empty-icon{width:60px;height:60px;border-radius:16px}.profile-tutor-page .tutor-empty h2{margin-top:12px;font-size:clamp(1.6rem,3vw,2.1rem)}.profile-tutor-page .tutor-empty>p:last-child{max-width:520px;margin-top:8px;font-size:.95rem}.profile-tutor-page .tutor-quick-actions{border:0;background:transparent;box-shadow:none;padding-inline:0}.profile-tutor-page .tutor-quick-action-group>span{display:none}.profile-tutor-page .tutor-quick-action-group>div{gap:8px}.profile-tutor-page .tutor-quick-actions button{min-height:36px;padding-inline:12px;border:1px solid var(--kora-ai-border);border-radius:999px;background:rgb(255 255 255/4%);color:var(--kora-ai-text,#a9b6c8);font-size:.75rem}.profile-tutor-page .tutor-quick-actions button:hover:not(:disabled){border-color:rgb(59 130 246/45%);background:rgb(59 130 246/12%);color:#f8fafc}.profile-tutor-page .tutor-composer{min-height:60px;padding:6px 8px}.profile-tutor-page .tutor-composer textarea{min-height:38px;max-height:160px;font-size:.95rem}.profile-tutor-page .tutor-composer-footer .primary-button{width:40px;height:40px;min-height:40px;padding:0;font-size:0;position:relative;display:flex;align-items:center;justify-content:center;gap:0;line-height:0}.profile-tutor-page .tutor-composer-footer .primary-button svg{position:absolute;top:50%;left:calc(50% + 2px);display:block;width:24px;height:24px;flex:0 0 24px;margin:0;color:#fff;stroke:#fff;stroke-width:2.7px;transform:translate(-50%,-50%)}.profile-tutor-page .tutor-message-actions{opacity:.82}.profile-tutor-page .tutor-assistant-icon,.profile-tutor-page .tutor-empty-icon,.profile-tutor-page .tutor-message.assistant .tutor-message-icon{overflow:hidden;isolation:isolate;border:0;background:transparent;box-shadow:none}.profile-tutor-page .tutor-assistant-icon{border-radius:15px}.profile-tutor-page .tutor-empty-icon{border-radius:18px}.profile-tutor-page .tutor-message.assistant .tutor-message-icon{border-radius:11px}.profile-tutor-page .tutor-assistant-icon img,.profile-tutor-page .tutor-empty-icon img,.profile-tutor-page .tutor-message.assistant .tutor-message-icon img{display:block;width:100%;height:100%;border-radius:inherit;object-fit:cover}.profile-tutor-page .tutor-messages,.profile-tutor-page .tutor-sidebar nav{scrollbar-width:thin;scrollbar-color:rgb(169 182 200/30%) transparent}.profile-tutor-page .tutor-messages::-webkit-scrollbar,.profile-tutor-page .tutor-sidebar nav::-webkit-scrollbar{width:6px;height:6px}.profile-tutor-page .tutor-messages::-webkit-scrollbar-thumb,.profile-tutor-page .tutor-sidebar nav::-webkit-scrollbar-thumb{border-radius:999px;background:rgb(169 182 200/30%)}@media (max-width:767px){.app-frame:has(.profile-tutor-page)>.mobile-header{display:none}.app-frame:has(.profile-tutor-page)>.main-content{padding-bottom:68px}.profile-tutor-page .tutor-empty{padding-top:32px}.profile-tutor-page .tutor-empty h2{font-size:1.55rem}.profile-tutor-page .tutor-quick-actions{overflow-x:auto;scrollbar-width:none}.profile-tutor-page .tutor-quick-actions::-webkit-scrollbar{display:none}.profile-tutor-page .tutor-quick-action-group{flex:0 0 auto}}.tutor-workspace{--tutor-sidebar-width:220px;width:min(100%,1120px)}.tutor-chat-header{min-height:58px;padding:8px 16px}.tutor-messages{padding:22px clamp(16px,4vw,40px) 18px}.tutor-message-stack{width:min(100%,640px);gap:18px}.tutor-chat-footer{gap:8px;padding:8px 16px 12px}.tutor-quick-actions{width:min(100%,640px);grid-template-columns:auto 1fr;gap:7px 10px;padding:8px 10px;border:1px solid color-mix(in srgb,var(--accent) 13%,var(--chrome-border));border-radius:13px;background:color-mix(in srgb,var(--accent) 3%,var(--surface))}.tutor-quick-action-group>span{align-self:start;padding-top:7px}.tutor-quick-action-group>div{min-width:0}.tutor-quick-actions button{min-height:28px;padding-inline:9px;font-size:.65rem}.tutor-composer{width:min(100%,640px);padding:5px;border-radius:14px}.tutor-composer textarea{min-height:44px;max-height:90px;font-size:.86rem}.tutor-attach-button,.tutor-composer-footer,.tutor-composer-footer .primary-button,.tutor-stop-button{min-height:30px}@media (max-width:760px){.tutor-quick-actions{grid-template-columns:1fr;gap:4px;padding:7px 8px}.tutor-quick-action-group{display:grid;gap:3px}.tutor-quick-action-group>span{padding-top:0}.tutor-chat-footer{padding-inline:10px}}@media (min-width:761px){.tutor-page{padding:12px 16px 16px}.tutor-workspace{--tutor-sidebar-width:260px;width:100%;max-width:none;height:auto;max-height:none;min-height:calc(100dvh - 28px);grid-template-columns:var(--tutor-sidebar-width) minmax(0,1fr);overflow:visible}.tutor-chat,.tutor-sidebar{min-width:0}.tutor-composer,.tutor-message-stack,.tutor-quick-actions{width:min(100%,980px)}.tutor-chat{min-height:calc(100dvh - 28px)}.tutor-messages{overflow-y:auto;padding:30px clamp(28px,5vw,72px) 28px}.tutor-message-stack{width:min(100%,1040px);gap:26px}.tutor-message.assistant>div{min-width:0;max-width:920px}.tutor-message p,.tutor-rich-text p{font-size:1rem;line-height:1.78}.tutor-rich-text h2{font-size:1.28rem}.tutor-chat{grid-template-rows:auto minmax(0,1fr) auto;overflow:visible}.tutor-chat-footer{min-width:0;overflow:visible;padding:10px 24px 18px;padding-bottom:28px}.tutor-composer{box-sizing:border-box;width:min(100%,980px);min-width:0;margin-inline:auto}.tutor-composer textarea{width:100%;min-height:62px;box-sizing:border-box}.tutor-composer-footer{min-width:0;flex-wrap:wrap}}@media (max-width:760px){.tutor-chat-footer{min-width:0;overflow:visible;position:relative;bottom:auto;padding-bottom:max(34px,env(safe-area-inset-bottom));margin-bottom:58px}.tutor-composer{box-sizing:border-box;width:100%;max-width:none;margin-inline:0}.tutor-composer textarea{width:100%;min-height:48px;box-sizing:border-box}.tutor-composer-footer{min-width:0;flex-wrap:wrap}.tutor-composer-footer>span:nth-child(2){max-width:64px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}@container (max-width: 1400px){.tutor-header-context{display:none}.tutor-header-controls .tutor-mode-picker button{width:34px;padding-inline:0;font-size:0}.tutor-header-controls .tutor-mode-picker button svg{display:block;margin:auto}.tutor-mind-map-trigger span,.tutor-personalize-trigger span{display:none}.tutor-mind-map-trigger,.tutor-personalize-trigger{width:38px;justify-content:center;padding-inline:0}}.tutor-page{min-height:0}@media (min-width:761px){.tutor-workspace{height:min(calc(100dvh - var(--workspace-topbar-height, 72px) - 28px),calc(100svh - var(--workspace-topbar-height, 72px) - 28px))}.tutor-chat-footer{position:sticky;right:auto;bottom:0;left:auto;z-index:20;min-height:0;max-height:190px;box-sizing:border-box;overflow-y:auto;padding-bottom:8px;border-top:1px solid color-mix(in srgb,var(--chrome-border) 72%,transparent)}.tutor-disclaimer{display:none}.tutor-quick-actions{padding-block:3px}.tutor-composer{padding:4px;gap:2px}.tutor-composer textarea{min-height:42px!important;max-height:56px!important}.tutor-composer-footer{min-height:28px}}.tutor-quick-actions{scrollbar-width:thin!important}.tutor-quick-actions::-webkit-scrollbar{display:block!important;width:6px;height:6px}.tutor-quick-actions::-webkit-scrollbar-track{background:color-mix(in srgb,var(--foreground) 6%,transparent);border-radius:999px}.tutor-quick-actions::-webkit-scrollbar-thumb{min-height:0;border:1px solid transparent;background:color-mix(in srgb,var(--accent) 48%,var(--muted-foreground));background-clip:padding-box}.tutor-quick-actions::-webkit-scrollbar-thumb:hover{background:var(--accent);background-clip:padding-box}@media (min-width:761px){.tutor-chat-footer{position:fixed;inset-inline:0;bottom:0;z-index:20;width:100%;box-sizing:border-box}.tutor-workspace{container-type:inline-size}.tutor-chat-footer{position:sticky!important;inset-inline:auto!important;bottom:0!important;width:100%!important;max-height:min(220px,32dvh);overflow-y:auto;padding-inline:clamp(16px,3vw,34px);background:color-mix(in srgb,var(--surface) 96%,transparent);box-shadow:0 -10px 28px color-mix(in srgb,#000 9%,transparent)}.tutor-chat-footer>*{margin-inline:auto}.tutor-chat-footer .tutor-action-feedback,.tutor-chat-footer .tutor-disclaimer,.tutor-chat-footer .tutor-error,.tutor-chat-footer>*{width:min(100%,980px)}}@media (max-width:760px){.tutor-chat-footer{position:sticky;bottom:0;z-index:30;padding:8px 10px max(12px,env(safe-area-inset-bottom));background:color-mix(in srgb,var(--surface) 97%,transparent);box-shadow:0 -8px 22px color-mix(in srgb,#000 12%,transparent)}.tutor-chat-footer .tutor-disclaimer{display:block;line-height:1.35;margin-top:4px}.tutor-composer textarea{min-height:54px;max-height:132px;line-height:1.45}.tutor-quick-actions{border-color:color-mix(in srgb,var(--accent) 28%,var(--border));background:color-mix(in srgb,var(--accent) 4%,var(--surface))}}.tutor-quick-actions{display:flex;width:min(100%,980px);align-items:center;gap:6px;padding:5px 7px;overflow-x:auto;border-radius:11px;scrollbar-width:thin}.tutor-quick-action-group{display:contents}.tutor-quick-action-group>span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.tutor-quick-action-group>div{display:contents}.tutor-quick-actions button{flex:0 0 auto;min-height:27px;padding-inline:8px;font-size:.63rem}@media (max-width:760px){.tutor-quick-actions{width:100%;gap:5px;padding:4px 5px;border-radius:10px}.tutor-quick-action-group,.tutor-quick-action-group>div{display:contents}.tutor-quick-actions button{min-height:29px;padding-inline:8px}}.tutor-chat-footer,.tutor-composer{min-height:max-content;overflow:visible}.tutor-composer textarea{display:block;overflow-y:auto}@media (min-width:761px){.tutor-workspace{height:calc(100dvh - 28px);min-height:0}.tutor-chat{height:100%;overflow:hidden}.tutor-messages{min-height:0;overflow-y:auto}.tutor-chat-footer{position:relative;z-index:7;align-self:end;background:color-mix(in srgb,var(--chrome-surface) 96%,transparent);backdrop-filter:blur(14px)}.tutor-chat{min-height:0}.tutor-chat-footer{position:sticky!important;bottom:0!important;z-index:30;align-self:end;width:100%;box-sizing:border-box}.tutor-chat{min-height:0;overflow:hidden}.tutor-messages{min-height:0;overflow-y:auto}}.tutor-composer .tutor-send-button{position:relative;display:grid;place-items:center;flex:0 0 40px;box-sizing:border-box;width:40px;min-width:40px;height:40px;min-height:40px;padding:0;margin:0;border:0;border-radius:50%;background:#2563eb;color:#fff;line-height:0;cursor:pointer}.tutor-composer .tutor-send-button>svg{position:static;display:block;width:24px;height:24px;margin:0;padding:0;color:#fff;transform:none;transition:none}.tutor-composer .tutor-send-button:disabled{cursor:not-allowed}.tutor-composer .tutor-send-button:focus-visible{outline:2px solid #a9c7f4;outline-offset:3px}.tutor-selected-action{display:flex;width:fit-content;max-width:100%;align-items:center;gap:4px;margin:4px 6px 0;padding:3px 4px 3px 10px;border:1px solid color-mix(in srgb,#3b82f6 35%,var(--chrome-border));border-radius:999px;background:color-mix(in srgb,#2563eb 16%,var(--surface));color:var(--foreground);font-size:.73rem;font-weight:700}.tutor-selected-action button{display:grid;width:22px;height:22px;place-items:center;padding:0;border:0;border-radius:50%;background:transparent;color:inherit;cursor:pointer}.tutor-selected-action button:focus-visible,.tutor-selected-action button:hover:not(:disabled){background:color-mix(in srgb,#3b82f6 24%,transparent)}.tutor-quick-actions button[aria-pressed=true]{border-color:var(--tool-color);background:color-mix(in srgb,var(--tool-color) 22%,var(--surface));color:var(--foreground)}.tutor-mobile-drawer-layer{position:fixed;z-index:90;inset:0;display:grid;grid-template-columns:minmax(0,1fr) min(88vw,380px);background:rgb(2 8 23/42%)}.tutor-mobile-drawer-backdrop{min-width:0;border:0;background:transparent;cursor:default}.tutor-mobile-drawer{display:flex;min-width:0;height:100%;flex-direction:column;gap:16px;padding:20px;border-left:1px solid rgb(148 163 184/18%);background:#0d1828;box-shadow:-20px 0 44px rgb(2 8 23/36%);animation:tutor-history-drawer-in .18s ease-out both}.tutor-mobile-drawer>header{display:flex;align-items:center;justify-content:space-between;gap:12px}.tutor-mobile-drawer>header span{color:#a9c7f4;font-size:.68rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.tutor-mobile-drawer>header h2{margin:3px 0 0;color:#f8fbff;font-size:1.2rem}.tutor-mobile-drawer>header button{display:grid;width:38px;height:38px;place-items:center;padding:0;border:1px solid rgb(148 163 184/18%);border-radius:10px;background:rgb(255 255 255/3%);color:#dbeafe;cursor:pointer}.tutor-mobile-new-conversation{display:inline-flex;min-height:42px;align-items:center;justify-content:center;gap:8px;padding:0 14px;border:0;border-radius:11px;background:#2563eb;color:#fff;font:inherit;font-size:.82rem;font-weight:800;cursor:pointer}.tutor-mobile-drawer nav{display:grid;min-height:0;gap:4px;overflow-y:auto}.tutor-mobile-conversation-row{display:grid;grid-template-columns:minmax(0,1fr) 38px 38px;align-items:center;gap:5px}.tutor-mobile-conversation-row>button:first-child{min-width:0;min-height:42px;overflow:hidden;padding:0 11px;border:1px solid transparent;border-radius:10px;background:transparent;color:#cbd5e1;font:inherit;font-size:.8rem;font-weight:700;text-align:left;text-overflow:ellipsis;white-space:nowrap;cursor:pointer}.tutor-mobile-conversation-row>button:first-child.active{border-color:rgb(96 165 250/35%);background:rgb(37 99 235/16%);color:#f8fbff}.tutor-mobile-conversation-row>button:not(:first-child){display:grid;width:38px;height:38px;place-items:center;padding:0;border:1px solid rgb(148 163 184/12%);border-radius:9px;background:rgb(255 255 255/3%);color:#a9c7f4;cursor:pointer}.tutor-mobile-drawer button:hover{border-color:rgb(96 165 250/42%);background-color:rgb(37 99 235/16%);color:#f8fbff}.tutor-mobile-drawer button:focus-visible,.tutor-sidebar-collapse:focus-visible{outline:2px solid #93c5fd;outline-offset:2px}@keyframes tutor-history-drawer-in{0%{opacity:0;transform:translateX(18px)}to{opacity:1;transform:translateX(0)}}@media (min-width:761px){.tutor-workspace.sidebar-is-collapsed{grid-template-columns:64px minmax(0,1fr)}.tutor-workspace.sidebar-is-collapsed .tutor-sidebar{width:64px;box-sizing:border-box;padding-inline:8px}}@media (max-width:767px){.tutor-mobile-drawer-layer{grid-template-columns:minmax(0,1fr) min(92vw,360px)}.tutor-mobile-drawer{padding:18px}}.profile-tutor-page .tutor-header-controls .tutor-usage{display:grid;min-width:154px;grid-template-columns:auto minmax(0,1fr);gap:2px 8px;padding:7px 10px 8px;border:1px solid rgb(96 165 250/36%);border-radius:12px;background:linear-gradient(145deg,rgb(30 64 175/28%),rgb(8 25 56/88%));box-shadow:inset 0 1px 0 rgb(191 219 254/8%),0 6px 16px rgb(2 32 88/20%);color:#dbeafe;overflow:hidden}.profile-tutor-page .tutor-header-controls .tutor-usage-head{display:contents}.profile-tutor-page .tutor-header-controls .tutor-usage-icon{display:grid;grid-row:span 2;width:28px;height:28px;place-items:center;border:1px solid rgb(125 211 252/28%);border-radius:9px;background:rgb(37 99 235/18%);color:#7dd3fc;box-shadow:0 0 14px rgb(37 99 235/22%)}.profile-tutor-page .tutor-header-controls .tutor-usage-label{display:block;overflow:hidden;color:#a9c7f4;font-size:.6rem;font-weight:800;letter-spacing:.06em;line-height:1.1;text-overflow:ellipsis;text-transform:uppercase;white-space:nowrap}.profile-tutor-page .tutor-header-controls .tutor-usage-body{display:flex;min-width:0;align-items:baseline;gap:5px}.profile-tutor-page .tutor-header-controls .tutor-usage-number{color:#f8fbff;font-size:1.05rem;font-weight:850;letter-spacing:-.04em;line-height:1;font-variant-numeric:tabular-nums}.profile-tutor-page .tutor-header-controls .tutor-usage-suffix{overflow:hidden;color:#b8cae8;font-size:.63rem;font-weight:650;text-overflow:ellipsis;white-space:nowrap}.profile-tutor-page .tutor-header-controls .tutor-usage-bar{display:block;grid-column:1/-1;width:100%;height:3px;overflow:hidden;border-radius:999px;background:rgb(148 163 184/20%)}.profile-tutor-page .tutor-header-controls .tutor-usage-fill{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#2563eb,#60a5fa);box-shadow:0 0 8px rgb(96 165 250/62%);transition:width .18s ease-out}.profile-tutor-page .tutor-header-controls .tutor-usage-upgrade{color:#fcd34d;font-size:.61rem;font-weight:800;text-decoration:none}.profile-tutor-page .tutor-header-controls .tutor-usage-upgrade:focus-visible,.profile-tutor-page .tutor-header-controls .tutor-usage-upgrade:hover{color:#fef3c7;text-decoration:underline}.profile-tutor-page .tutor-header-controls .tutor-usage.is-low{border-color:rgb(251 191 36/52%)}.profile-tutor-page .tutor-header-controls .tutor-usage.is-low .tutor-usage-icon{border-color:rgb(251 191 36/35%);background:rgb(180 83 9/20%);color:#fbbf24;box-shadow:0 0 14px rgb(251 191 36/16%)}.profile-tutor-page .tutor-header-controls .tutor-usage.is-low .tutor-usage-number{color:#fde68a}.profile-tutor-page .tutor-header-controls .tutor-usage.is-low .tutor-usage-fill{background:linear-gradient(90deg,#d97706,#fbbf24);box-shadow:0 0 8px rgb(251 191 36/45%)}.profile-tutor-page .tutor-header-controls .tutor-usage.is-exhausted{border-color:rgb(251 146 60/50%);background:linear-gradient(145deg,rgb(120 53 15/22%),rgb(8 25 56/88%))}.profile-tutor-page .tutor-header-controls .tutor-usage.is-exhausted .tutor-usage-icon{border-color:rgb(251 146 60/30%);background:rgb(124 45 18/24%);color:#fdba74;box-shadow:none}.profile-tutor-page .tutor-header-controls .tutor-usage.is-exhausted .tutor-usage-number{color:#fed7aa}.profile-tutor-page .tutor-header-controls .tutor-usage.is-exhausted .tutor-usage-bar{background:rgb(251 146 60/18%)}.profile-tutor-page .tutor-header-controls .tutor-usage.is-unlimited .tutor-usage-fill{background:linear-gradient(90deg,#38bdf8,#67e8f9)}.profile-tutor-page .tutor-header-controls .tutor-usage:focus-within{outline:2px solid #93c5fd;outline-offset:2px}@media (max-width:767px){.profile-tutor-page .tutor-header-controls .tutor-usage{display:grid;min-width:68px;padding:6px 7px;border-radius:10px}.profile-tutor-page .tutor-header-controls .tutor-usage-icon,.profile-tutor-page .tutor-header-controls .tutor-usage-label,.profile-tutor-page .tutor-header-controls .tutor-usage-suffix,.profile-tutor-page .tutor-header-controls .tutor-usage-upgrade{display:none}.profile-tutor-page .tutor-header-controls .tutor-usage-body{justify-content:center}.profile-tutor-page .tutor-header-controls .tutor-usage-number{font-size:.9rem}.profile-tutor-page .tutor-header-controls .tutor-usage-bar{grid-column:1;height:2px}}.profile-tutor-page .tutor-message-stack{gap:14px}.profile-tutor-page .tutor-message.assistant{grid-template-columns:46px minmax(0,max-content);gap:8px}.profile-tutor-page .tutor-message.assistant>div{width:fit-content;max-width:min(100%,680px);padding:10px 12px;border-radius:10px 15px 15px 15px}.profile-tutor-page .tutor-message.user{width:fit-content;max-width:min(72%,560px);padding:9px 12px;border-radius:14px 14px 5px 14px}.profile-tutor-page .tutor-message p,.profile-tutor-page .tutor-rich-text p{margin-block:5px;font-size:.93rem;line-height:1.58}.profile-tutor-page .tutor-rich-text h2{margin-top:14px;font-size:1.08rem}.profile-tutor-page .tutor-rich-text h3{margin-top:12px;font-size:.98rem}.profile-tutor-page .tutor-message-actions{min-height:26px;margin-top:7px}.profile-tutor-page .tutor-message-actions button{min-height:28px;padding:3px 7px}@media (max-width:767px){.profile-tutor-page .tutor-message-stack{gap:12px}.profile-tutor-page .tutor-message.assistant{grid-template-columns:38px minmax(0,max-content);gap:7px}.profile-tutor-page .tutor-message.assistant>div{max-width:calc(100% - 4px);padding:9px 10px;border-radius:9px 14px 14px 14px}.profile-tutor-page .tutor-message.user{max-width:86%;padding:8px 10px}.profile-tutor-page .tutor-message p,.profile-tutor-page .tutor-rich-text p{font-size:.9rem;line-height:1.52}}.profile-tutor-page .tutor-chat-header-shell{min-width:0}.profile-tutor-page .tutor-chat-header{flex-wrap:wrap}.profile-tutor-page .tutor-chat-identity{flex:1 1 160px}.profile-tutor-page .tutor-chat-identity h1{text-transform:none}.profile-tutor-page .tutor-header-controls{display:flex;flex:0 1 auto;flex-wrap:wrap;overflow:visible}.profile-tutor-page .tutor-header-controls .tutor-mode-picker{flex:0 0 auto;width:max-content}.profile-tutor-page .tutor-header-controls .tutor-mode-picker>div{flex-wrap:nowrap}.profile-tutor-page .tutor-composer-footer>span:first-child,.profile-tutor-page .tutor-sidebar>p{color:#b0c2df}.tutor-composer-footer button[class*=trigger]{display:grid;place-items:center;align-content:center;gap:0;line-height:0}.tutor-composer-footer button[class*=trigger]>span:first-child{display:grid;place-items:center;width:26px;height:26px;line-height:0}.tutor-composer-footer button[class*=trigger] svg{display:block;width:18px;height:18px;margin:0}.tutor-usage-mobile-context{display:none}.profile-tutor-page .tutor-customization .eyebrow{color:#bfdbfe}.profile-tutor-page .tutor-customization-response .tutor-mode-picker button:is(:hover,[aria-pressed=true]){color:#dbeafe;background:#163568;border-color:#60a5fa}.profile-tutor-page .tutor-session-status{margin:0;padding:8px 16px;font-size:.8rem}.profile-tutor-page .tutor-session-status[role=status]{color:#bfdbfe;background:rgb(37 99 235/12%)}.profile-tutor-page .tutor-message.assistant{grid-template-columns:46px minmax(0,1fr)}.profile-tutor-page .tutor-message{min-width:0;overflow-wrap:anywhere}.profile-tutor-page .tutor-message.user small{color:#fff}.profile-tutor-page .tutor-message.assistant>div{justify-self:start}.profile-tutor-page .tutor-attachment,.profile-tutor-page .tutor-attachment>span{min-width:0}.profile-tutor-page .tutor-attachment strong{overflow-wrap:anywhere}.profile-tutor-page button:disabled{cursor:not-allowed}.profile-tutor-page button:focus-visible{outline:2px solid #93c5fd;outline-offset:2px}.profile-tutor-page .tutor-chat-footer{max-height:min(45dvh,320px);overflow-y:auto}@container (max-width: 680px){.profile-tutor-page .tutor-chat-identity,.profile-tutor-page .tutor-header-controls{flex-basis:100%}.profile-tutor-page .tutor-header-controls{justify-content:flex-start}.profile-tutor-page .tutor-header-controls .tutor-mode-picker{flex:0 0 auto}}@media (min-width:768px){.profile-tutor-page .tutor-workspace{height:calc(100dvh - var(--workspace-topbar-height, 72px) - 28px);min-height:0}}@media (max-width:767px){.profile-tutor-page .tutor-message.assistant{grid-template-columns:38px minmax(0,1fr)}.profile-tutor-page .tutor-header-controls{gap:4px}.profile-tutor-page .tutor-header-controls .tutor-usage-mobile-context{display:inline;color:#bfdbfe;font-size:.6rem}.profile-tutor-page .tutor-header-controls .tutor-usage{min-width:0}.profile-tutor-page .tutor-header-controls .tutor-mode-picker button{width:28px;min-width:28px;min-height:34px}.profile-tutor-page .tutor-message-actions button{min-height:36px}}@media (prefers-reduced-motion:reduce){.profile-tutor-page .tutor-usage-fill{transition:none}.tutor-mobile-drawer{animation:none}}.profile-tutor-page .tutor-message-study-actions{display:flex;flex-wrap:wrap;align-items:flex-start;gap:.45rem;margin-top:.8rem}.profile-tutor-page .tutor-flashcard-save>summary,.profile-tutor-page .tutor-message-study-actions>a{display:inline-flex;align-items:center;gap:.4rem;min-height:34px;padding:.42rem .65rem;border:1px solid rgb(148 163 184/20%);border-radius:10px;color:#dbeafe;background:rgb(30 41 59/58%);font-size:.74rem;font-weight:600;text-decoration:none;cursor:pointer}.profile-tutor-page .tutor-flashcard-save[open]{flex-basis:min(100%,420px)}.profile-tutor-page .tutor-flashcard-save form{display:grid;gap:.65rem;margin-top:.65rem;padding:.8rem;border:1px solid rgb(148 163 184/18%);border-radius:12px;background:rgb(15 23 42/72%)}.profile-tutor-page .tutor-flashcard-save label{display:grid;gap:.3rem;color:#cbd5e1;font-size:.72rem}.profile-tutor-page .tutor-flashcard-save input,.profile-tutor-page .tutor-flashcard-save textarea{width:100%;min-height:38px;padding:.55rem .65rem;border:1px solid rgb(148 163 184/25%);border-radius:8px;color:#f8fafc;background:rgb(2 6 23/55%);font:inherit;resize:vertical}.profile-tutor-page .tutor-flashcard-save form button{justify-self:start;display:inline-flex;align-items:center;gap:.4rem;min-height:36px;padding:.5rem .75rem;border:0;border-radius:9px;color:#10152d;background:#bac5ff;font-weight:700;cursor:pointer}.profile-tutor-page .tutor-flashcard-save form [role=alert]{color:#fda4af;font-size:.75rem}.profile-tutor-page .tutor-flashcard-save input:focus-visible,.profile-tutor-page .tutor-flashcard-save summary:focus-visible,.profile-tutor-page .tutor-flashcard-save textarea:focus-visible,.profile-tutor-page .tutor-message-study-actions a:focus-visible{outline:2px solid #a5b4fc;outline-offset:2px}.profile-tutor-page .tutor-message-actions>button:disabled{opacity:.65}.youtube-video-backdrop{position:fixed;z-index:110;inset:0;background:rgb(3 7 18/72%);backdrop-filter:blur(4px)}.youtube-video-dialog{position:fixed;z-index:111;top:50%;left:50%;width:min(440px,calc(100vw - 32px));padding:22px;transform:translate(-50%,-50%);border:1px solid rgb(148 163 184/22%);border-radius:20px;color:#f8fafc;background:#111b2d;box-shadow:0 28px 80px rgb(0 0 0/45%)}.youtube-video-dialog>header{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}.youtube-video-dialog>header span{color:#93a4ff;font-size:.66rem;font-weight:800;letter-spacing:.12em}.youtube-video-dialog h2{margin:5px 0 0;font-size:1.15rem}.youtube-video-dialog>header button{width:34px;height:34px;border:1px solid rgb(148 163 184/20%);border-radius:10px;color:#cbd5e1;background:rgb(255 255 255/5%);font-size:1.35rem;cursor:pointer}.youtube-video-dialog>p{margin:13px 0 20px;color:#aebbd0;font-size:.86rem;line-height:1.5}.youtube-video-dialog form{display:grid;gap:9px}.youtube-video-dialog label{color:#dce5f5;font-size:.78rem;font-weight:700}.youtube-video-dialog input{width:100%;min-height:44px;padding:10px 12px;border:1px solid rgb(148 163 184/25%);border-radius:11px;outline:none;color:#f8fafc;background:#0b1424;font:inherit;font-size:.84rem}.youtube-video-dialog input:focus-visible{border-color:#818cf8;box-shadow:0 0 0 3px rgb(129 140 248/22%)}.youtube-video-dialog form>small{min-height:17px;color:#91a2bc;font-size:.72rem}.youtube-video-dialog form>small[role=alert]{color:#fda4af}.youtube-video-dialog form>footer{display:flex;justify-content:flex-end;gap:9px;margin-top:12px}.youtube-video-dialog form>footer button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;padding:0 13px;border:1px solid rgb(148 163 184/20%);border-radius:11px;color:#dbeafe;background:rgb(255 255 255/5%);font:inherit;font-size:.8rem;font-weight:700;cursor:pointer}.youtube-video-dialog form>footer button[type=submit]{border-color:transparent;color:#10152d;background:#a5b4fc}.youtube-video-dialog form>footer button:disabled{opacity:.5;cursor:not-allowed}@media (min-width:768px){.profile-tutor-page{position:fixed;z-index:1;inset:0;height:100dvh;min-height:100dvh;overflow:hidden}.app-frame:not([data-desktop-navigation=top]) .profile-tutor-page{left:256px}.app-frame.sidebar-collapsed:not([data-desktop-navigation=top]) .profile-tutor-page{left:78px}.profile-tutor-page .tutor-workspace{height:100%;min-height:0;margin:0}}