:root{--bg-base:#f8faff;--bg-surface:#fff;--bg-elevated:#f0f4ff;--bg-hover:#e8effe;--bg-active:#d6e4ff;--text-primary:#0a0f1e;--text-secondary:#3a4a66;--text-muted:#7a8fad;--text-inverse:#fff;--accent-teal:#0089a3;--accent-teal-dim:#e0f2f1;--accent-gold:#c47b00;--accent-gold-dim:#fff3e0;--border-subtle:#e8efff;--border-default:#cbd8f0;--border-strong:#8aabdd;--state-success:#22c55e;--state-error:#ef4444;--state-warning:#c47b00;--state-info:#0089a3;--shadow-sm:0 1px 3px #0a0f1e0d;--shadow-md:0 4px 12px #0a0f1e14;--shadow-lg:0 12px 32px #0a0f1e1f;--glow-teal:0 0 20px #0089a31f;--glow-gold:0 0 20px #c47b001a;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--font-display:"Sora", system-ui, -apple-system, sans-serif;--font-body:"Inter", system-ui, -apple-system, sans-serif;--font-mono:"JetBrains Mono", monospace}[data-theme=dark]{--bg-base:#090e1a;--bg-surface:#0f1626;--bg-elevated:#162035;--bg-hover:#1c2b45;--bg-active:#1e3050;--text-primary:#e8edf5;--text-secondary:#8b9bb5;--text-muted:#4a5a72;--text-inverse:#090e1a;--accent-teal:#00c6d4;--accent-teal-dim:#007a84;--accent-gold:#f0ab40;--accent-gold-dim:#7a5318;--border-subtle:#1c2b45;--border-default:#253555;--border-strong:#3a5080;--state-success:#22c55e;--state-error:#ef4444;--state-warning:#f0ab40;--state-info:#00c6d4;--shadow-sm:0 1px 3px #0006;--shadow-md:0 4px 16px #00000080;--shadow-lg:0 12px 40px #0009;--glow-teal:0 0 24px #00c6d426;--glow-gold:0 0 24px #f0ab401f}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-base);color:var(--text-primary);font-family:var(--font-body);height:100vh;font-size:15px;line-height:1.6;transition:background-color .2s,color 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cubic-bezier(.16,1,.3,1);display:inline-flex}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background-color:var(--accent-teal);color:var(--text-inverse);font-weight:600}.btn-primary:hover:not(:disabled){filter:brightness(1.1);box-shadow:var(--glow-teal)}.btn-secondary{border:1px solid var(--accent-teal);color:var(--accent-teal);background:0 0}.btn-secondary:hover:not(:disabled){background-color:#00c6d41a}.btn-ghost{color:var(--text-secondary)}.btn-ghost:hover:not(:disabled){background-color:var(--bg-hover);color:var(--text-primary)}.btn-danger{color:var(--state-error);background-color:#ef444426;border:1px solid #ef444480}.btn-danger:hover:not(:disabled){background-color:var(--state-error);color:#fff}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border-default);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--border-strong)}.form-input{background-color:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-md);width:100%;height:44px;color:var(--text-primary);outline:none;padding:10px 14px;font-size:15px;transition:all .3s}.form-input:focus{border-color:var(--accent-teal);box-shadow:var(--glow-teal)}.card{background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:20px 24px;transition:all .2s}.card:hover{border-color:var(--border-default);box-shadow:var(--shadow-md)}.card-elevated{background-color:var(--bg-elevated);border:1px solid var(--border-default);box-shadow:var(--shadow-lg)}.skeleton{background:linear-gradient(90deg, var(--bg-surface) 25%, var(--bg-hover) 50%, var(--bg-surface) 75%);background-size:200% 100%;animation:1.5s ease-in-out 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var(--border-default);border-radius:var(--radius-lg);max-width:85%;padding:12px 18px;font-size:14.5px;line-height:1.5}.demo-chat-line.ai .demo-text{background-color:var(--bg-surface);border-color:var(--border-subtle)}.demo-caret{color:var(--accent-teal);margin-left:2px;animation:.8s infinite cursorBlink}.landing-gap-section{background-color:var(--bg-surface);border-top:1px solid var(--border-subtle);border-bottom:1px solid var(--border-subtle);text-align:center;padding:80px 24px}.landing-section-title{font-size:var(--text-2xl);margin-bottom:12px;font-weight:700}.landing-section-desc{color:var(--text-secondary);max-width:600px;margin:0 auto 48px;font-size:16px}.landing-grid-cards{grid-template-columns:1fr;gap:24px;max-width:1000px;margin:0 auto;display:grid}@media (width>=768px){.landing-grid-cards{grid-template-columns:1fr 1fr 1fr}}.gap-card{background-color:var(--bg-base);border-radius:var(--radius-lg);border:1px solid var(--border-subtle);text-align:left;padding:32px 24px;transition:transform .2s}.gap-card:hover{transform:translateY(-4px)}.gap-card-title{color:var(--accent-teal);margin-bottom:12px;font-size:16px;font-weight:700}.gap-card p{color:var(--text-secondary);font-size:13.5px;line-height:1.5}.landing-steps-section{text-align:center;max-width:1000px;margin:0 auto;padding:80px 24px}.landing-steps-grid{grid-template-columns:1fr;gap:32px;margin-top:48px;display:grid}@media (width>=768px){.landing-steps-grid{grid-template-columns:1fr 1fr 1fr}}.step-item{flex-direction:column;align-items:center;display:flex}.step-number{border-radius:var(--radius-full);background-color:var(--accent-teal-dim);width:48px;height:48px;color:var(--accent-teal);font-family:var(--font-display);justify-content:center;align-items:center;margin-bottom:16px;font-size:20px;font-weight:700;display:flex}.step-item h3{margin-bottom:8px;font-size:16px}.step-item p{color:var(--text-secondary);max-width:250px;font-size:13.5px}.landing-matrix-section{background-color:var(--bg-surface);text-align:center;padding:80px 24px}.landing-table{border-collapse:collapse;text-align:left;width:100%;max-width:800px;margin:0 auto}.landing-table th,.landing-table td{border-bottom:1px solid var(--border-subtle);padding:16px 20px;font-size:14.5px}.landing-table th{font-family:var(--font-display);font-weight:700}.highlight-col{background-color:var(--bg-elevated);border-left:1px solid var(--border-default);border-right:1px solid var(--border-default);font-weight:600}.landing-footer{background-color:var(--bg-base);text-align:center;padding:80px 24px 40px}.footer-banner{background:linear-gradient(135deg, var(--accent-teal-dim), var(--bg-surface));border:1px solid var(--border-default);border-radius:var(--radius-xl);max-width:800px;margin:0 auto 40px;padding:48px 24px}.footer-banner h2{font-size:var(--text-xl);margin-bottom:24px}.footer-copyright{color:var(--text-muted);font-size:12px}.auth-viewport{background-color:var(--bg-base);justify-content:center;align-items:center;width:100vw;height:100vh;padding:24px;display:flex}.auth-card{background-color:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-xl);width:100%;max-width:420px;box-shadow:var(--shadow-lg);flex-direction:column;gap:20px;padding:40px;display:flex}.auth-title{font-size:var(--text-xl);text-align:center;font-weight:700}.form-group{text-align:left;flex-direction:column;gap:6px;margin-bottom:14px;display:flex}.form-group label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.08em;font-size:12px;font-weight:600}.auth-separator{text-align:center;color:var(--text-muted);align-items:center;margin:8px 0;font-size:12px;display:flex}.auth-separator:before,.auth-separator:after{content:"";border-bottom:1px solid var(--border-subtle);flex:1}.auth-separator span{padding:0 10px}.auth-footer-text{text-align:center;color:var(--text-secondary);font-size:13px}.auth-footer-text span{color:var(--accent-teal);cursor:pointer;font-weight:600}.auth-footer-text span:hover{text-decoration:underline}.strength-meter{justify-content:space-between;align-items:center;gap:8px;margin-top:6px;display:flex}.strength-bar{border-radius:var(--radius-full);background-color:var(--border-default);height:4px;transition:all .3s}.strength-bar.level-1{background-color:var(--state-error)}.strength-bar.level-2{background-color:var(--state-warning)}.strength-bar.level-3{background-color:var(--accent-teal)}.strength-bar.level-4{background-color:var(--state-success)}.strength-label{color:var(--text-secondary);font-size:11px;font-weight:600}.onboarding-viewport{background-color:var(--bg-base);justify-content:center;align-items:center;width:100vw;height:100vh;padding:24px;display:flex}.onboarding-card{background-color:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-xl);width:100%;max-width:520px;box-shadow:var(--shadow-lg);flex-direction:column;min-height:400px;padding:32px;display:flex}.onboarding-progress-track{background-color:var(--border-subtle);border-radius:var(--radius-full);width:100%;height:4px;margin-bottom:24px;overflow:hidden}.onboarding-progress-fill{background-color:var(--accent-teal);height:100%;transition:width .3s cubic-bezier(.16,1,.3,1)}.onboarding-step-body{flex-direction:column;flex:1;gap:16px;display:flex}.onboarding-icon{border-radius:var(--radius-full);background-color:var(--accent-teal-dim);width:48px;height:48px;color:var(--accent-teal);justify-content:center;align-items:center;margin-bottom:8px;font-size:24px;display:flex}.onboarding-step-title{font-size:var(--text-xl);letter-spacing:-.02em;font-weight:700}.onboarding-step-desc{color:var(--text-secondary);margin-bottom:8px;font-size:14px;line-height:1.5}.onboarding-domain-grid{grid-template-columns:1fr;gap:12px;display:grid}@media (width>=480px){.onboarding-domain-grid{grid-template-columns:1fr 1fr}}.domain-card-option{background-color:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-lg);cursor:pointer;flex-direction:column;gap:8px;padding:20px;transition:all .2s;display:flex;position:relative}.domain-card-option:hover:not(.locked){border-color:var(--accent-teal);transform:translateY(-2px)}.domain-card-option.selected{border-color:var(--accent-teal);background-color:var(--accent-teal-dim)}.domain-card-icon{font-size:28px}.domain-card-name{font-size:14px;font-weight:600}.badge-active{background-color:var(--accent-teal);color:var(--text-inverse);border-radius:var(--radius-sm);text-transform:uppercase;padding:2px 6px;font-size:10px;font-weight:700;position:absolute;top:12px;right:12px}.domain-card-option.locked{opacity:.5;cursor:not-allowed}.onboarding-year-list,.onboarding-goals-list{flex-direction:column;gap:8px;display:flex}.onboarding-year-item,.onboarding-goal-item{background-color:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-md);cursor:pointer;align-items:center;gap:12px;padding:12px 16px;transition:all 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.15s}.onboarding-chip:hover{border-color:var(--border-strong);color:var(--text-primary)}.onboarding-actions{justify-content:flex-end;gap:12px;margin-top:24px;display:flex}.dashboard-tab{background-color:var(--bg-base);flex-direction:column;flex:1;height:100%;display:flex;overflow-y:auto}.dashboard-content{flex-direction:column;flex:1;gap:24px;width:100%;max-width:900px;margin:0 auto;padding:32px 40px;display:flex}.dashboard-search-container{background-color:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);align-items:center;gap:12px;padding:10px 16px;transition:border-color .2s;display:flex}.dashboard-search-container:focus-within{border-color:var(--accent-teal)}.dashboard-search-input{color:var(--text-primary);background:0 0;border:none;outline:none;flex:1;font-size:15px}.dashboard-section-title{text-transform:uppercase;color:var(--text-muted);letter-spacing:.08em;margin-top:12px;font-size:11px;font-weight:700}.continue-study-grid{grid-template-columns:1fr;gap:16px;display:grid}@media (width>=640px){.continue-study-grid{grid-template-columns:1fr 1fr}}.study-card{background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);cursor:pointer;box-shadow:var(--shadow-sm);flex-direction:column;gap:12px;padding:20px;transition:all .2s;display:flex}.study-card:hover{border-color:var(--accent-teal);box-shadow:var(--shadow-md);transform:translateY(-2px)}.study-card-header{color:var(--text-secondary);justify-content:space-between;align-items:center;font-size:12px;display:flex}.study-card-date{color:var(--text-muted)}.study-card-body{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;font-size:14px;font-weight:600;overflow:hidden}.study-card-action{color:var(--accent-teal);margin-top:auto;font-size:12.5px;font-weight:600}.suggested-topics-list{flex-wrap:wrap;gap:10px;display:flex}.suggested-topic-pill{background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-full);color:var(--text-secondary);cursor:pointer;padding:8px 16px;font-size:13px;transition:all .15s}.suggested-topic-pill:hover{border-color:var(--accent-teal);color:var(--text-primary)}.progress-bars-card{background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);flex-direction:column;gap:16px;padding:24px;display:flex}.progress-item-bar{flex-direction:column;gap:6px;display:flex}.progress-label-row{justify-content:space-between;font-size:13.5px;font-weight:600;display:flex}.progress-track{background-color:var(--bg-elevated);border-radius:var(--radius-full);width:100%;height:6px;overflow:hidden}.progress-fill{background-color:var(--accent-teal);border-radius:var(--radius-full);height:100%}.explore-topics-grid{grid-template-columns:1fr;gap:16px;margin-top:12px;display:grid}@media (width>=640px){.explore-topics-grid{grid-template-columns:1fr 1fr}}.explore-card{background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);cursor:pointer;flex-direction:column;gap:10px;padding:20px;transition:all .2s;display:flex}.explore-card:hover{border-color:var(--accent-teal);transform:translateY(-2px)}.explore-card h4{font-size:14.5px;font-weight:700}.explore-desc{color:var(--text-secondary);font-size:12.5px;line-height:1.4}.saved-cards-list{flex-direction:column;gap:16px;display:flex}.saved-card{background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);flex-direction:column;gap:12px;padding:20px;display:flex}.saved-card-header{justify-content:space-between;font-size:12px;display:flex}.saved-card-date{color:var(--text-muted)}.saved-card-body{color:var(--text-primary);font-size:14px;line-height:1.5}.saved-card-actions{border-top:1px solid var(--border-subtle);justify-content:flex-end;gap:12px;margin-top:4px;padding-top:12px;display:flex}.pricing-grid{grid-template-columns:1fr;gap:24px;max-width:800px;margin:0 auto;display:grid}@media (width>=640px){.pricing-grid{grid-template-columns:1fr 1fr}}.pricing-card{background-color:var(--bg-surface);border:1px solid 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var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);flex-direction:column;gap:16px;padding:24px;display:flex}.settings-section-card h3{border-bottom:1px solid var(--border-subtle);margin-bottom:4px;padding-bottom:8px;font-size:15px;font-weight:700}.settings-row{justify-content:space-between;align-items:center;gap:16px;font-size:14px;display:flex}.command-palette-card{background-color:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-xl);width:100%;max-width:560px;box-shadow:var(--shadow-lg);flex-direction:column;display:flex;overflow:hidden}.command-palette-search-row{border-bottom:1px solid var(--border-subtle);align-items:center;gap:12px;padding:16px 20px;display:flex}.command-palette-input{color:var(--text-primary);background:0 0;border:none;outline:none;flex:1;font-size:16px}.command-palette-list{max-height:300px;padding:12px 0;overflow-y:auto}.command-palette-label{color:var(--text-muted);letter-spacing:.08em;margin-bottom:4px;padding:4px 20px;font-size:10px;font-weight:700}.command-palette-item{cursor:pointer;color:var(--text-secondary);align-items:center;gap:12px;padding:10px 20px;font-size:13.5px;transition:all .1s;display:flex}.command-palette-item:hover,.command-palette-item.active{background-color:var(--bg-hover);color:var(--text-primary)}.command-palette-empty{text-align:center;color:var(--text-muted);padding:20px;font-size:13.5px}.command-palette-footer{background-color:var(--bg-elevated);border-top:1px solid var(--border-subtle);color:var(--text-muted);text-align:right;padding:10px 20px;font-size:11px}.app-layout{background-color:var(--bg-base);width:100vw;height:100vh;display:flex;overflow:hidden}.sidebar{background-color:var(--bg-surface);border-right:1px solid var(--border-subtle);flex-direction:column;flex-shrink:0;width:260px;height:100%;padding:24px 16px;display:flex}.workspace-viewport{flex-direction:column;flex:1;height:100%;display:flex;overflow:hidden}.profile-info-card{background-color:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-xl);margin-top:16px;margin-bottom:8px;padding:16px}.profile-year-label{color:var(--accent-teal);letter-spacing:.04em;text-transform:uppercase;font-size:11px;font-weight:700}.avatar-placeholder{border-radius:var(--radius-full);background-color:var(--accent-teal-dim);width:36px;height:36px;color:var(--accent-teal);border:1px solid var(--accent-teal);justify-content:center;align-items:center;font-size:16px;font-weight:700;display:flex}.profile-name{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;max-width:150px;font-size:13.5px;font-weight:600;overflow:hidden}.profile-course{color:var(--text-muted);font-size:11px}.sidebar-nav{flex-direction:column;gap:6px;margin-top:24px;display:flex}.sidebar-nav-item{border-radius:var(--radius-lg);color:var(--text-secondary);cursor:pointer;text-align:left;background:0 0;border:none;outline:none;align-items:center;gap:12px;width:100%;padding:10px 16px;font-size:14px;font-weight:500;transition:all .15s;display:flex}.sidebar-nav-item:hover,.sidebar-nav-item.active{background-color:var(--bg-hover);color:var(--text-primary)}.sidebar-nav-item.active{background-color:var(--accent-teal-dim);color:var(--accent-teal);font-weight:600}.utility-buttons-container{margin-bottom:12px}.history-list{flex-direction:column;gap:4px;max-height:180px;display:flex;overflow-y:auto}.history-item{border-radius:var(--radius-md);cursor:pointer;color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;padding:8px 12px;font-size:12.5px;overflow:hidden}.history-item:hover{background-color:var(--bg-hover);color:var(--text-primary)}.history-item.empty{color:var(--text-muted);cursor:default}.logout-btn{color:var(--state-error)}.logout-btn:hover{color:var(--state-error);background-color:#ef444414}.chat-container{background-color:var(--bg-base);flex-direction:column;height:100%;display:flex}.chat-header{border-bottom:1px solid var(--border-subtle);background-color:var(--bg-surface);flex-shrink:0;justify-content:space-between;align-items:center;height:64px;padding:0 24px;display:flex}.chat-header-title{font-family:var(--font-display);color:var(--text-primary);font-size:16px;font-weight:700}.chat-header-actions{align-items:center;gap:8px;display:flex}.lang-toggle-btn,.theme-toggle-btn{border-radius:var(--radius-md);border:1px solid var(--border-default);background-color:var(--bg-surface);color:var(--text-secondary);cursor:pointer;align-items:center;gap:6px;padding:8px 12px;font-size:12.5px;font-weight:600;transition:all .15s;display:flex}.lang-toggle-btn:hover,.theme-toggle-btn:hover{border-color:var(--border-strong);color:var(--text-primary)}.messages-viewport{flex-direction:column;flex:1;gap:24px;padding:32px 24px;display:flex;overflow-y:auto}.welcome-screen{text-align:center;flex-direction:column;align-items:center;gap:12px;max-width:600px;margin:40px auto;display:flex}.welcome-logo{border-radius:var(--radius-xl);background-color:var(--accent-teal-dim);width:56px;height:56px;color:var(--accent-teal);border:1px solid var(--accent-teal);justify-content:center;align-items:center;margin-bottom:8px;font-size:28px;display:flex}.welcome-suggestions-grid{grid-template-columns:1fr 1fr;gap:12px;width:100%;margin-top:16px;display:grid}.welcome-suggestion-card{background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);cursor:pointer;text-align:left;padding:16px;transition:all .2s}.welcome-suggestion-card:hover{border-color:var(--accent-teal);transform:translateY(-2px)}.welcome-suggestion-title{margin-bottom:6px;font-size:13.5px;font-weight:700}.welcome-suggestion-prompt{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;font-size:12px;overflow:hidden}.message-row{width:100%;display:flex}.message-row.user{justify-content:flex-end}.message-center-wrap{width:100%;max-width:800px}.message-row.user .message-center-wrap{justify-content:flex-end;display:flex}.message-bubble{background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);max-width:85%;box-shadow:var(--shadow-sm);flex-direction:column;gap:12px;padding:20px 24px;display:flex}.message-row.user .message-bubble{background-color:var(--bg-active);border-color:var(--border-default)}.message-header{color:var(--text-muted);justify-content:space-between;font-size:11px;font-weight:600;display:flex}.message-body{font-size:14.5px;line-height:1.5}.message-body p{margin-bottom:8px}.remedies-grid{grid-template-columns:1fr;gap:16px;margin-top:16px;display:grid}@media (width>=640px){.remedies-grid{grid-template-columns:1fr 1fr}}.remedy-card{border-radius:var(--radius-lg);border:1px solid var(--border-subtle);background-color:var(--bg-surface);padding:16px}.remedy-card.assessment{border-left:4px solid var(--accent-teal)}.remedy-card.action{border-left:4px solid #34d399}.remedy-card.warning{border-left:4px solid var(--state-error)}.remedy-card.followup{border-left:4px solid var(--accent-indigo)}.remedy-card-header{margin-bottom:8px;font-size:13px;font-weight:700}.remedy-card-body{color:var(--text-secondary);font-size:12.5px;line-height:1.4}.ai-meta-row{border-top:1px solid var(--border-subtle);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-top:4px;padding-top:12px;display:flex}.sources-chips-list{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.sources-label{color:var(--text-muted);font-size:11px;font-weight:700}.citation-chip{border-radius:var(--radius-full);cursor:pointer;padding:4px 10px;font-size:11.5px;font-weight:600;transition:opacity .15s}.citation-chip:hover{opacity:.8}.action-buttons-row{align-items:center;gap:6px;display:flex}.action-icon-btn{border-radius:var(--radius-md);border:1px solid var(--border-subtle);background-color:var(--bg-surface);width:28px;height:28px;color:var(--text-secondary);cursor:pointer;transition:all .1;justify-content:center;align-items:center;display:flex}.action-icon-btn:hover{border-color:var(--border-strong);color:var(--text-primary)}.action-icon-btn.active{background-color:var(--accent-teal-dim);border-color:var(--accent-teal);color:var(--accent-teal)}.thinking-container{color:var(--text-muted);align-items:center;gap:10px;font-size:13.5px;display:flex}.pulsing-dots{gap:4px;display:flex}.pulsing-dot{background-color:var(--text-muted);border-radius:50%;width:6px;height:6px;animation:1.2s ease-in-out infinite pulse}.pulsing-dot:nth-child(2){animation-delay:.2s}.pulsing-dot:nth-child(3){animation-delay:.4s}@keyframes pulse{0%,to{opacity:.4;transform:scale(.6)}50%{opacity:1;transform:scale(1.2)}}.chat-input-panel{border-top:1px solid var(--border-subtle);background-color:var(--bg-surface);flex-direction:column;flex-shrink:0;gap:12px;padding:16px 24px;display:flex}.suggested-chips-container{gap:8px;padding-bottom:4px;display:flex;overflow-x:auto}.suggested-followup-chip{border-radius:var(--radius-full);border:1px solid var(--border-subtle);background-color:var(--bg-base);color:var(--text-secondary);cursor:pointer;white-space:nowrap;padding:6px 12px;font-size:12.5px}.suggested-followup-chip:hover{border-color:var(--accent-teal);color:var(--text-primary)}.limit-lock-overlay{border-radius:var(--radius-lg);color:var(--state-error);background-color:#ef444414;border:1px solid #ef444433;justify-content:space-between;align-items:center;width:100%;padding:12px 20px;font-size:13.5px;display:flex}.limit-lock-text{align-items:center;font-weight:600;display:flex}.chat-input-container{border:1px solid var(--border-default);border-radius:var(--radius-xl);background-color:var(--bg-surface);box-shadow:var(--shadow-sm);flex-direction:column;gap:8px;padding:12px 16px;display:flex}.chat-input-container:focus-within{border-color:var(--accent-teal)}.chat-textarea{resize:none;width:100%;height:56px;color:var(--text-primary);background:0 0;border:none;outline:none;font-size:14.5px;line-height:1.4}.chat-input-controls{justify-content:space-between;align-items:center;display:flex}.input-controls-left{align-items:center;gap:12px;display:flex}.depth-selector{position:relative}.depth-button{border-radius:var(--radius-md);border:1px solid var(--border-subtle);background-color:var(--bg-elevated);color:var(--text-secondary);cursor:pointer;padding:6px 12px;font-size:12px;font-weight:600}.depth-dropdown{background-color:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);z-index:100;flex-direction:column;width:240px;padding:8px 0;display:flex;position:absolute;bottom:36px;left:0}.depth-option{text-align:left;cursor:pointer;background:0 0;border:none;width:100%;padding:10px 16px}.depth-option:hover{background-color:var(--bg-hover)}.depth-option.active{background-color:var(--accent-teal-dim)}.depth-option-title{color:var(--text-primary);font-size:12.5px;font-weight:700}.depth-option-desc{color:var(--text-muted);margin-top:2px;font-size:10.5px}.limit-badge{color:var(--text-muted);background-color:var(--bg-elevated);border-radius:var(--radius-full);border:1px solid var(--border-subtle);padding:4px 10px;font-size:11px;font-weight:700}.send-message-btn{border-radius:var(--radius-lg);background-color:var(--accent-teal);width:32px;height:32px;color:var(--text-inverse);cursor:pointer;border:none;outline:none;justify-content:center;align-items:center;transition:opacity .15s;display:flex}.send-message-btn:hover{opacity:.9}.send-message-btn:disabled{background-color:var(--border-subtle);color:var(--text-muted);cursor:not-allowed}.source-panel{background-color:var(--bg-surface);border-left:1px solid var(--border-subtle);width:360px;height:100%;box-shadow:var(--shadow-lg);flex-direction:column;flex-shrink:0;animation:.3s cubic-bezier(.16,1,.3,1) slideIn;display:flex}@keyframes slideIn{0%{transform:translate(100%)}to{transform:translate(0)}}.source-panel-header{border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:flex-start;padding:20px;display:flex}.source-panel-header h3{font-size:15px;font-weight:700}.close-panel-btn{border-radius:var(--radius-md);cursor:pointer;color:var(--text-secondary);background:0 0;border:none;padding:4px}.close-panel-btn:hover{background-color:var(--bg-hover);color:var(--text-primary)}.source-panel-body{flex-direction:column;flex:1;gap:20px;padding:20px;display:flex;overflow-y:auto}.passage-card{background-color:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-xl);padding:20px}.passage-title{color:var(--text-primary);margin-bottom:8px;font-size:13.5px;font-weight:700}.passage-text{font-family:var(--font-mono);color:var(--text-secondary);font-size:12px;line-height:1.5}.highlight-text{background-color:#f0ab4033;border-bottom:1px dashed #f0ab40}.study-actions-card{background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);padding:20px}.study-actions-card h4{margin-bottom:8px;font-size:13.5px;font-weight:700}.modal-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background-color:#0a0f1e99;justify-content:center;align-items:center;width:100vw;height:100vh;animation:.2s ease-out fadeIn;display:flex;position:fixed;top:0;left:0}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}