:root{color-scheme:dark;--bg:oklch(14% 0.012 270);--bg-raised:oklch(16.5% 0.014 270);--surface:oklch(18.5% 0.016 270);--surface-2:oklch(22% 0.018 270);--surface-3:oklch(25.5% 0.02 270);--input-bg:oklch(16% 0.014 270);--text:oklch(92% 0.008 270);--text-strong:oklch(97% 0.004 270);--muted:oklch(71% 0.018 270);--muted-strong:oklch(79% 0.014 270);--placeholder:oklch(60% 0.016 270);--border:oklch(29% 0.02 270/0.8);--border-strong:oklch(38% 0.024 270/0.9);--accent:oklch(60% 0.18 278);--accent-hover:oklch(66% 0.19 278);--accent-active:oklch(55% 0.17 278);--accent-text:oklch(80% 0.11 278);--accent-tint:oklch(60% 0.18 278/0.13);--on-accent:oklch(98% 0.005 278);--success:oklch(74% 0.15 155);--success-tint:oklch(74% 0.15 155/0.12);--danger:oklch(70% 0.17 25);--danger-strong:oklch(58% 0.19 25);--danger-tint:oklch(70% 0.17 25/0.12);--warning:oklch(78% 0.13 82);--r-sm:8px;--r-md:10px;--r-lg:14px;--r-pill:999px;--shadow-overlay:0 16px 48px oklch(6% 0.015 270/0.55);--z-sticky:10;--z-overlay:80;--z-drawer:90;--z-max:100;--ease-out:cubic-bezier(0.22,1,0.36,1);--t-fast:150ms;--t-base:200ms;--t-slow:240ms}*{box-sizing:border-box}body,html{background:var(--bg)}body{min-height:100dvh;margin:0;color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::selection{background:var(--accent-tint);color:var(--text-strong)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{border-radius:var(--r-pill);background:oklch(32% .02 270/.6)}::-webkit-scrollbar-thumb:hover{background:oklch(42% .022 270/.7)}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}a{color:inherit;text-decoration:none}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}h1{font-size:1.45rem;font-weight:700;letter-spacing:-.02em;line-height:1.2}h1,h2{margin:0;color:var(--text-strong);text-wrap:balance}h2{font-size:1.02rem;letter-spacing:-.01em;line-height:1.3}h2,h3{font-weight:650}h3{margin:0;color:var(--text-strong);font-size:.94rem;line-height:1.35}.muted{color:var(--muted)}.app-shell{width:100%;max-width:100%;padding:28px 20px 64px}.app-shell:-webkit-full-screen,:-webkit-full-screen .app-shell{min-height:100dvh;padding:28px 24px 64px}.app-shell:fullscreen,:fullscreen .app-shell{min-height:100dvh;padding:28px 24px 64px}html.is-fullscreen-mobile,html.is-fullscreen-mobile body{height:100dvh;overflow:hidden}html.is-fullscreen-mobile .app-shell{position:fixed;inset:0;z-index:var(--z-max);display:flex;min-height:100dvh;max-height:100dvh;flex-direction:column;padding:8px 12px;overflow-y:auto;background:var(--bg);-webkit-overflow-scrolling:touch}html.is-fullscreen-mobile .app-header{flex-shrink:0;margin-bottom:8px}html.is-fullscreen-mobile .centered-timer-layout{flex:1 1;min-height:0}.app-header{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;width:100%;padding:6px 0;margin-bottom:28px}.app-header-side{display:flex;align-items:center;gap:8px}.app-header-side.end{justify-self:end}.app-wordmark{justify-self:center;margin:0;color:var(--text-strong);font-size:1.05rem;font-weight:700;letter-spacing:-.01em}.app-wordmark:before{content:"";display:inline-block;width:8px;height:8px;margin-right:9px;border-radius:2px;background:var(--accent);vertical-align:1px}.avatar-button{border:0;background:none;padding:0;border-radius:var(--r-pill)}.stack{display:grid;grid-gap:16px;gap:16px}.row{display:flex;flex-wrap:wrap;gap:10px}.page-header{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:20px}.panel{border:1px solid var(--border);border-radius:var(--r-lg);background:var(--surface);padding:20px;transition:border-color var(--t-base) var(--ease-out)}.panel-header{display:flex;justify-content:space-between;gap:16px;margin-bottom:16px}.panel-header p{margin:4px 0 0;font-size:.86rem}.week-grid{display:grid;grid-template-columns:repeat(7,1fr);grid-gap:8px;gap:8px}.weekday{display:flex;min-height:86px;flex-direction:column;justify-content:space-between;border:1px solid var(--border);border-radius:var(--r-md);background:var(--bg-raised);padding:12px;transition:border-color var(--t-fast) var(--ease-out)}.weekday.studied{border-color:oklch(74% .15 155/.35);background:var(--success-tint)}.weekday strong{display:block;color:var(--text-strong);font-size:.9rem}.weekday span{color:var(--muted);font-size:.78rem}.weekday p{margin:10px 0 0;color:var(--muted-strong);font-size:.84rem;font-weight:600}.weekday.studied p{color:var(--success)}.timer{display:grid;grid-gap:18px;gap:18px}.timer-stage{display:grid;place-items:center;padding:6px 0 10px}.timer-progress{display:grid;width:min(100%,272px);aspect-ratio:1;place-items:center;border-radius:var(--r-pill);background:radial-gradient(circle,var(--surface) 0 57%,transparent 57.5%),conic-gradient(var(--accent) var(--progress),oklch(27% .018 270) 0)}.timer-progress span{margin-top:10px;color:var(--muted);font-size:.8rem;font-weight:550}.timer-display{color:var(--text-strong);text-align:center;font-size:3.9rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:-.03em;line-height:1}.timer-controls{display:flex;flex-wrap:wrap;gap:10px}.segmented-control{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:4px;gap:4px;border:1px solid var(--border);border-radius:var(--r-md);background:var(--input-bg);padding:4px}.segment{border:0;border-radius:calc(var(--r-md) - 4px);background:transparent;color:var(--muted);padding:9px 8px;font-size:.86rem;font-weight:600;transition:background var(--t-fast) var(--ease-out),color var(--t-fast) var(--ease-out)}.segment:hover{color:var(--text)}.segment.active{background:var(--surface-3);color:var(--text-strong)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;border:1px solid transparent;border-radius:var(--r-md);background:var(--accent);color:var(--on-accent);font-weight:600;font-size:.9rem;padding:9px 16px;transition:background var(--t-fast) var(--ease-out),border-color var(--t-fast) var(--ease-out),color var(--t-fast) var(--ease-out)}.btn:hover:not(:disabled){background:var(--accent-hover)}.btn:active:not(:disabled){background:var(--accent-active)}.btn.secondary{border-color:var(--border-strong);background:var(--surface-2);color:var(--text)}.btn.secondary:hover:not(:disabled){background:var(--surface-3);border-color:var(--border-strong)}.btn.danger{background:var(--danger-strong);color:var(--on-accent)}.btn.danger:hover:not(:disabled){background:oklch(63% .19 25)}.btn.secondary.subtle,.btn.subtle{min-height:32px;border-color:transparent;background:transparent;color:var(--muted-strong);padding:5px 10px;font-size:.82rem}.btn.secondary.subtle:hover:not(:disabled),.btn.subtle:hover:not(:disabled){background:var(--surface-2);color:var(--text-strong)}.btn.danger.subtle{min-height:32px;border-color:transparent;background:transparent;color:var(--danger);padding:5px 10px;font-size:.82rem}.btn.danger.subtle:hover:not(:disabled){background:var(--danger-tint);color:var(--danger)}.btn-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:var(--r-md);border:1px solid var(--border);background:var(--surface);color:var(--muted-strong);padding:0;transition:background var(--t-fast) var(--ease-out),color var(--t-fast) var(--ease-out),border-color var(--t-fast) var(--ease-out)}.btn-icon:hover{background:var(--surface-2);color:var(--text-strong);border-color:var(--border-strong)}.field{display:grid;grid-gap:6px;gap:6px}.field label,.field-label{color:var(--muted-strong);font-size:.82rem;font-weight:550}.field input,.field select,.field textarea,.input{width:100%;border:1px solid var(--border);border-radius:var(--r-md);background:var(--input-bg);color:var(--text);padding:10px 12px;transition:border-color var(--t-fast) var(--ease-out),background var(--t-fast) var(--ease-out)}.field input:hover,.field select:hover,.field 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var(--ease-out)}.session-item:hover,.subject-item:hover{border-color:var(--border-strong)}.session-heading,.subject-item{display:flex;align-items:center;justify-content:space-between;gap:12px}.session-item p{margin:8px 0 0;font-size:.88rem}.color-dot{display:inline-block;width:10px;height:10px;margin-right:8px;border-radius:var(--r-pill)}.swatch{display:inline-grid;width:40px;height:36px;place-items:center;border:1px solid var(--border);border-radius:var(--r-sm);background:var(--input-bg);transition:border-color var(--t-fast) var(--ease-out),background var(--t-fast) var(--ease-out)}.swatch .color-dot{margin:0}.swatch:hover{border-color:var(--border-strong)}.swatch.active{border-color:var(--accent);background:var(--accent-tint)}.error{border:1px solid oklch(70% .17 25/.35);border-radius:var(--r-md);background:var(--danger-tint);color:oklch(82% .11 25);padding:12px 14px;margin-bottom:16px}.empty,.error{font-size:.9rem}.empty{border:1px dashed 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var(--border);border-radius:16px;background:var(--surface);padding:36px}.auth-header{text-align:center;margin-bottom:28px}.auth-header .eyebrow{margin:0 0 14px}.auth-header h2{font-size:1.5rem;font-weight:700;letter-spacing:-.02em}.auth-header p{color:var(--muted);font-size:.92rem;margin:8px 0 0}.eyebrow{margin:0;color:var(--accent-text);font-size:.88rem;font-weight:700;letter-spacing:-.01em}.eyebrow:before{content:"";display:inline-block;width:7px;height:7px;margin-right:8px;border-radius:2px;background:var(--accent);vertical-align:1px}.auth-form{display:grid;grid-gap:18px;gap:18px}.auth-footer{text-align:center;margin-top:22px;color:var(--muted);font-size:.88rem}.auth-footer a{color:var(--accent-text);font-weight:600;transition:color var(--t-fast) var(--ease-out)}.auth-footer a:hover{color:var(--accent-hover)}.auth-legal{margin-top:18px;text-align:center}.auth-legal-links{margin:12px 0 6px;font-size:.84rem}.auth-legal-links a{color:var(--accent-text);font-weight:600}.auth-legal-note{font-size:.78rem;line-height:1.4;margin:0}.consent-checkbox{display:flex;align-items:flex-start;gap:10px;font-size:.84rem;line-height:1.5;color:var(--muted-strong)}.consent-checkbox input{margin-top:3px;width:16px;height:16px;flex:0 0 auto;accent-color:var(--accent)}.consent-checkbox a{color:var(--accent-text);font-weight:600}.legal-page{min-height:100dvh;padding:32px 20px 48px;display:grid;place-items:start center}.legal-document{width:min(100%,720px);padding:28px 32px}.legal-document h1{margin:8px 0;font-size:1.5rem}.legal-document h2{margin:24px 0 8px;font-size:1.05rem}.legal-document section li,.legal-document section p{color:var(--muted-strong);line-height:1.6;font-size:.92rem;max-width:70ch;text-wrap:pretty}.legal-document ul{padding-left:1.2rem;margin:8px 0}.legal-footer{margin-top:32px;padding-top:16px;border-top:1px solid var(--border);font-size:.88rem}.legal-footer a{color:var(--accent-text);font-weight:600}.privacy-rights .error{margin-top:8px}.onboarding-page{display:grid;place-items:center;min-height:100dvh;padding:32px 24px}.onboarding-card{width:min(100%,600px);border:1px solid var(--border);border-radius:16px;background:var(--surface);padding:40px}.onboarding-progress{display:flex;justify-content:space-between;position:relative;margin-bottom:44px}.onboarding-progress:before{content:"";position:absolute;top:15px;left:0;right:0;height:2px;background:var(--border)}.onboarding-progress-line{position:absolute;top:15px;left:0;height:2px;background:var(--accent);transition:width var(--t-slow) var(--ease-out)}.onboarding-progress-step{width:32px;height:32px;border-radius:var(--r-pill);background:var(--surface-2);border:2px solid var(--border-strong);display:grid;place-items:center;font-weight:650;font-size:.86rem;color:var(--muted);position:relative;z-index:1;transition:border-color var(--t-base) var(--ease-out),background var(--t-base) var(--ease-out),color var(--t-base) var(--ease-out)}.onboarding-progress-step.active{border-color:var(--accent);color:var(--accent-text);background:var(--accent-tint)}.onboarding-progress-step.completed{border-color:var(--success);color:var(--success);background:var(--success-tint)}.onboarding-progress-step span{position:absolute;top:38px;font-size:.76rem;font-weight:550;color:var(--muted);white-space:nowrap}.onboarding-step{display:grid;grid-gap:24px;gap:24px}.onboarding-step h2{font-size:1.35rem;font-weight:700;letter-spacing:-.02em}.onboarding-step p.step-desc{color:var(--muted);font-size:.94rem;line-height:1.55;margin:-14px 0 4px}.onboarding-nav{display:flex;justify-content:space-between;gap:16px;margin-top:8px}.onboarding-success{text-align:center;padding:16px 0}.onboarding-success-icon{width:72px;height:72px;border-radius:var(--r-pill);background:var(--success-tint);border:2px solid var(--success);color:var(--success);display:inline-grid;place-items:center;font-size:2rem;margin-bottom:20px}.color-palette{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}.subject-tag{display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:var(--r-pill);background:var(--surface-2);border:1px solid var(--border);font-size:.86rem;font-weight:550}.subject-tag button{background:transparent;border:0;color:var(--muted);padding:0 0 0 2px;display:grid;place-items:center;font-size:1rem;line-height:1}.subject-tag button:hover{color:var(--danger)}.drawer-overlay{position:fixed;inset:0;z-index:var(--z-overlay);background:oklch(8% .01 270/.6);animation:overlay-in var(--t-base) var(--ease-out) forwards}.drawer-container{position:fixed;top:0;right:0;bottom:0;width:min(480px,100%);z-index:var(--z-drawer);background:var(--bg-raised);border-left:1px solid var(--border);box-shadow:var(--shadow-overlay);display:flex;flex-direction:column;animation:drawer-in var(--t-slow) var(--ease-out) forwards}@keyframes overlay-in{0%{opacity:0}to{opacity:1}}@keyframes drawer-in{0%{transform:translateX(40px);opacity:0}to{transform:translateX(0);opacity:1}}.drawer-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border)}.user-profile-info{display:flex;align-items:center;gap:14px;min-width:0}.avatar-glow{display:grid;place-items:center;width:44px;height:44px;flex:0 0 auto;border-radius:var(--r-pill);background:var(--accent)}.avatar-initials{color:var(--on-accent);font-weight:700;font-size:1rem}.user-details{min-width:0}.user-details h3{margin:0;font-size:1rem;font-weight:650;color:var(--text-strong)}.user-details h3,.user-details p{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.user-details p{margin:2px 0 0;font-size:.8rem}.drawer-actions{display:flex;align-items:center;gap:8px}.close-drawer-btn{display:grid;place-items:center;width:36px;height:36px;border-radius:var(--r-md);border:1px solid var(--border);background:var(--surface);color:var(--muted-strong);padding:0;transition:background var(--t-fast) var(--ease-out),color var(--t-fast) var(--ease-out)}.close-drawer-btn:hover{background:var(--surface-2);color:var(--text-strong)}.drawer-tabs{display:flex;gap:4px;padding:10px 20px;border-bottom:1px solid var(--border);overflow-x:auto;scrollbar-width:thin}.drawer-tab-btn{display:inline-flex;align-items:center;gap:7px;flex-shrink:0;min-height:34px;border:1px solid transparent;border-radius:var(--r-pill);background:transparent;color:var(--muted);padding:5px 13px;font-size:.82rem;font-weight:600;transition:background var(--t-fast) var(--ease-out),color var(--t-fast) var(--ease-out)}.drawer-tab-btn:hover{color:var(--text);background:var(--surface-2)}.drawer-tab-btn.active{background:var(--accent-tint);color:var(--accent-text)}.drawer-icon{width:16px;height:16px;flex:0 0 auto}.drawer-content{flex:1 1;overflow-y:auto;padding:20px 24px 28px}.metric-drawer-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:10px;gap:10px;margin-bottom:16px}.metric-mini{border:1px solid var(--border);border-radius:var(--r-md);background:var(--surface);padding:12px;text-align:center}.metric-mini span{display:block;font-size:.74rem;font-weight:550;color:var(--muted)}.metric-mini strong{display:block;margin-top:4px;font-size:1.25rem;font-weight:700;letter-spacing:-.02em;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--text-strong)}.task-creator{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}.task-creator .input{flex:1 1;min-width:180px}.task-creator input[type=date].input{flex:0 1 auto;width:auto}.tasks-groups{display:grid;grid-gap:22px;gap:22px}.tasks-group-title{display:flex;align-items:center;gap:8px;margin:0 0 10px;padding-bottom:7px;border-bottom:1px solid var(--border);color:var(--muted-strong);font-size:.88rem;font-weight:650}.tasks-group-title .drawer-icon{width:16px;height:16px}.tasks-group-count{margin-left:auto;color:var(--muted);font-size:.8rem;font-weight:550;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.tasks-list{display:grid;grid-gap:6px;gap:6px}.tasks-empty{margin:8px 0;color:var(--muted);font-size:.85rem}.task-item{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:44px;padding:9px 12px;border:1px solid var(--border);border-radius:var(--r-md);background:var(--surface);transition:border-color var(--t-fast) var(--ease-out)}.task-item:hover{border-color:var(--border-strong)}.task-item.editing{display:block}.task-item.late{border-color:oklch(70% .17 25/.35)}.task-main{display:flex;align-items:center;gap:12px;flex:1 1;min-width:0}.task-main input[type=checkbox]{width:18px;height:18px;flex:0 0 auto;accent-color:var(--accent);cursor:pointer}.task-text{display:flex;flex-direction:column;min-width:0}.task-title{font-size:.9rem;font-weight:550;color:var(--text-strong);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;transition:color var(--t-fast) var(--ease-out)}.task-title.done{color:var(--muted);font-weight:450;text-decoration:line-through}.task-due{font-size:.74rem;color:var(--muted)}.task-due.late{color:var(--danger);font-weight:600}.task-actions{display:flex;gap:4px;flex:0 0 auto}.whiteboard-workspace{display:flex;flex-direction:column;gap:12px;width:100%}.whiteboard-tools{flex-wrap:wrap;gap:14px;padding:10px 12px;border:1px solid var(--border);border-radius:var(--r-md);background:var(--bg-raised)}.tool-group,.whiteboard-tools{display:flex;align-items:center}.tool-group{gap:8px}.tool-label{font-size:.8rem;font-weight:550;color:var(--muted-strong)}.swatch-btn{width:26px;height:26px;border-radius:var(--r-pill);border:2px solid transparent;padding:0;transition:border-color var(--t-fast) var(--ease-out)}.swatch-btn.active{border-color:var(--text-strong)}.size-btn{display:grid;place-items:center;width:32px;height:32px;border-radius:var(--r-sm);border:1px solid var(--border);background:var(--surface);color:var(--muted);padding:0;transition:background var(--t-fast) var(--ease-out),color var(--t-fast) var(--ease-out),border-color var(--t-fast) var(--ease-out)}.size-btn span{display:block;border-radius:var(--r-pill);background:currentColor}.size-btn.active,.size-btn:hover{background:var(--surface-2);color:var(--text-strong);border-color:var(--border-strong)}.whiteboard-canvas{width:100%;height:380px;border:1px solid var(--border);border-radius:var(--r-md);background:oklch(12% .01 270);cursor:crosshair;touch-action:none}.subject-notes-container{display:grid;grid-gap:20px;gap:20px}.subject-note-title{display:flex;align-items:center;font-size:.94rem;font-weight:650;color:var(--text-strong);margin:0 0 8px}.subject-notes-list{display:grid;grid-gap:8px;gap:8px}.note-card{border:1px solid var(--border);border-radius:var(--r-md);background:var(--surface);padding:12px;transition:border-color var(--t-fast) var(--ease-out)}.note-card:hover{border-color:var(--border-strong)}.note-date{font-size:.74rem;color:var(--muted);display:block;margin-bottom:6px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.note-text{margin:0;font-size:.88rem;color:var(--muted-strong);line-height:1.5;max-width:70ch}.centered-timer-layout{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:55vh;width:100%;margin:0 auto}.centered-timer-wrapper{width:min(460px,100%);margin:0 auto}@media (max-width:720px){.app-shell{padding:16px 12px 56px}.panel{border-radius:var(--r-md);padding:16px}.auth-card,.onboarding-card{padding:26px 20px}.week-grid{grid-template-columns:repeat(2,1fr)}.timer-display{font-size:3rem}.metric-drawer-grid,.segmented-control{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){*,:after,:before{transition-duration:.01ms!important;animation-duration:.01ms!important}}