:root{--font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Noto Sans Malayalam", sans-serif;--font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;--bg: #f6f7fb;--surface: #ffffff;--surface-2: #f0f2f8;--surface-3: #e5e8f2;--border: #d7dbe7;--border-strong: #b7bdd0;--text: #161a2c;--text-2: #484e66;--text-3: #5f6580;--primary: #3b4cca;--primary-hover: #2f3eaa;--primary-soft: #e8eafb;--primary-text: #ffffff;--success: #17703f;--success-soft: #e3f4ea;--warning: #8a5a00;--warning-soft: #fdf1d6;--danger: #b42318;--danger-soft: #fdeceb;--info: #0b6283;--info-soft: #e1f2f8;--focus: #3b4cca;--radius-sm: 6px;--radius: 10px;--radius-lg: 14px;--shadow-sm: 0 1px 2px rgba(22, 26, 44, .06);--shadow: 0 2px 8px rgba(22, 26, 44, .08);--shadow-lg: 0 12px 32px rgba(22, 26, 44, .18);--sidebar-w: 248px;color-scheme:light}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg: #0f1220;--surface: #171b2d;--surface-2: #1e2338;--surface-3: #272d46;--border: #2f3652;--border-strong: #464e70;--text: #eceef7;--text-2: #c2c6da;--text-3: #9ea4bf;--primary: #8f9cff;--primary-hover: #a7b1ff;--primary-soft: #262c52;--primary-text: #0f1220;--success: #6fd49b;--success-soft: #16301f;--warning: #f0c065;--warning-soft: #352a12;--danger: #ff8f86;--danger-soft: #3a1a18;--info: #74c8e8;--info-soft: #12303c;--focus: #a7b1ff;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow: 0 2px 8px rgba(0, 0, 0, .45);--shadow-lg: 0 12px 32px rgba(0, 0, 0, .55);color-scheme:dark}}:root[data-theme=dark]{--bg: #0f1220;--surface: #171b2d;--surface-2: #1e2338;--surface-3: #272d46;--border: #2f3652;--border-strong: #464e70;--text: #eceef7;--text-2: #c2c6da;--text-3: #9ea4bf;--primary: #8f9cff;--primary-hover: #a7b1ff;--primary-soft: #262c52;--primary-text: #0f1220;--success: #6fd49b;--success-soft: #16301f;--warning: #f0c065;--warning-soft: #352a12;--danger: #ff8f86;--danger-soft: #3a1a18;--info: #74c8e8;--info-soft: #12303c;--focus: #a7b1ff;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow: 0 2px 8px rgba(0, 0, 0, .45);--shadow-lg: 0 12px 32px rgba(0, 0, 0, .55);color-scheme:dark}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--font-sans);font-size:15px;line-height:1.5;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:650;letter-spacing:-.01em}h1{font-size:1.6rem}h2{font-size:1.2rem}h3{font-size:1.02rem}p{margin:0}a{color:var(--primary);text-decoration-thickness:1px;text-underline-offset:2px}a:hover{color:var(--primary-hover)}code,pre,.mono{font-family:var(--font-mono);font-size:.88em}pre{white-space:pre-wrap;word-break:break-word}:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.skip-link{position:absolute;left:12px;top:-48px;z-index:100;background:var(--primary);color:var(--primary-text);padding:8px 14px;border-radius:var(--radius-sm)}.skip-link:focus{top:12px}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}.app-shell{display:grid;grid-template-columns:var(--sidebar-w) 1fr;min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;overflow-y:auto;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:16px 12px}.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 16px;font-weight:700;font-size:1.05rem;color:var(--text);text-decoration:none}.brand-mark{width:30px;height:30px;border-radius:8px;background:var(--primary);color:var(--primary-text);display:grid;place-items:center;font-weight:800}.nav-section{margin-top:12px}.nav-label{font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--text-3);padding:6px 10px;font-weight:600}.nav-link{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--radius-sm);color:var(--text-2);text-decoration:none;font-weight:500}.nav-link:hover{background:var(--surface-2);color:var(--text)}.nav-link[aria-current=page]{background:var(--primary-soft);color:var(--primary);font-weight:600}.nav-link .icon{width:18px;height:18px;flex:none}.sidebar-footer{margin-top:auto;padding-top:12px;border-top:1px solid var(--border);display:grid;gap:8px}.main{min-width:0;display:flex;flex-direction:column}.topbar{display:none;position:sticky;top:0;z-index:20;align-items:center;justify-content:space-between;padding:10px 16px;background:var(--surface);border-bottom:1px solid var(--border)}.content{padding:28px 32px 48px;max-width:1280px;width:100%;margin:0 auto}.page-header{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:12px 16px;margin-bottom:24px}.page-header .subtitle{color:var(--text-2);margin-top:4px}.page-actions{display:flex;flex-wrap:wrap;gap:8px}.breadcrumbs{font-size:.85rem;color:var(--text-3);margin-bottom:6px}.breadcrumbs a{color:var(--text-3)}@media(max-width:900px){.app-shell{grid-template-columns:1fr}.sidebar{position:fixed;inset:0 auto 0 0;width:min(86vw,300px);z-index:50;transform:translate(-100%);transition:transform .2s ease;box-shadow:var(--shadow-lg)}.sidebar[data-open=true]{transform:none}.scrim{position:fixed;inset:0;background:#0a0c1873;z-index:40}.topbar{display:flex}.content{padding:20px 16px 40px}}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.card-body{padding:20px}.card-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;border-bottom:1px solid var(--border)}.card-header h2,.card-header h3{font-size:1rem}.grid{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.split{display:grid;grid-template-columns:minmax(0,2fr) minmax(280px,1fr);gap:20px;align-items:start}@media(max-width:1100px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.split{grid-template-columns:1fr}}@media(max-width:700px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}.stack{display:grid;gap:16px}.stack-sm{display:grid;gap:8px}.stack>*,.stack-sm>*{min-width:0}.row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.row-between{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.muted{color:var(--text-2)}.subtle{color:var(--text-3);font-size:.86rem}.divider{height:1px;background:var(--border);margin:16px 0;border:0}.stat{padding:18px 20px}.stat-value{font-size:1.9rem;font-weight:700;letter-spacing:-.02em}.stat-label{color:var(--text-2);font-size:.88rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:38px;padding:8px 14px;border-radius:var(--radius-sm);border:1px solid var(--border-strong);background:var(--surface);color:var(--text);font:inherit;font-weight:600;font-size:.92rem;cursor:pointer;text-decoration:none;white-space:nowrap}.btn:hover{background:var(--surface-2);color:var(--text)}.btn:disabled,.btn[aria-disabled=true]{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--primary);border-color:var(--primary);color:var(--primary-text)}.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);color:var(--primary-text)}.btn-danger{background:var(--danger);border-color:var(--danger);color:#fff}.btn-danger:hover{filter:brightness(.95);background:var(--danger);color:#fff}.btn-ghost{background:transparent;border-color:transparent}.btn-sm{min-height:30px;padding:4px 10px;font-size:.85rem}.btn-block{width:100%}.icon-btn{min-height:36px;width:36px;padding:0}.field{display:grid;gap:6px}.field label,.label{font-weight:600;font-size:.9rem}.field .hint{color:var(--text-3);font-size:.84rem}.field .error{color:var(--danger);font-size:.86rem;font-weight:500}.input,.select,.textarea{width:100%;min-height:40px;padding:8px 12px;border-radius:var(--radius-sm);border:1px solid var(--border-strong);background:var(--surface);color:var(--text);font:inherit}.textarea{min-height:110px;resize:vertical;line-height:1.5}.input:focus,.select:focus,.textarea:focus{outline:3px solid color-mix(in srgb,var(--focus) 45%,transparent);outline-offset:0;border-color:var(--focus)}.input[aria-invalid=true],.select[aria-invalid=true],.textarea[aria-invalid=true]{border-color:var(--danger)}.checkbox{display:flex;gap:10px;align-items:flex-start}.checkbox input{width:18px;height:18px;margin-top:2px;accent-color:var(--primary);flex:none}.form-grid{display:grid;gap:16px;grid-template-columns:repeat(2,minmax(0,1fr))}.form-grid .full{grid-column:1 / -1}@media(max-width:700px){.form-grid{grid-template-columns:1fr}}fieldset{border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px 16px;margin:0}legend{font-weight:600;padding:0 6px}.badge{display:inline-flex;align-items:center;gap:6px;padding:2px 9px;border-radius:999px;font-size:.78rem;font-weight:600;background:var(--surface-3);color:var(--text-2);white-space:nowrap}.badge-success{background:var(--success-soft);color:var(--success)}.badge-warning{background:var(--warning-soft);color:var(--warning)}.badge-danger{background:var(--danger-soft);color:var(--danger)}.badge-info{background:var(--info-soft);color:var(--info)}.badge-primary{background:var(--primary-soft);color:var(--primary)}.badge-dot:before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}.table-wrap{overflow-x:auto;max-width:100%;position:relative}table.table{width:100%;border-collapse:collapse;font-size:.92rem}.table th{text-align:left;font-weight:600;color:var(--text-2);font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;padding:10px 14px;border-bottom:1px solid var(--border);background:var(--surface-2)}.table td{padding:12px 14px;border-bottom:1px solid var(--border);vertical-align:top}.table tr:last-child td{border-bottom:0}.table tbody tr:hover{background:color-mix(in srgb,var(--surface-2) 60%,transparent)}.table .num{text-align:right;font-variant-numeric:tabular-nums}.alert{display:flex;gap:10px;padding:12px 14px;border-radius:var(--radius);border:1px solid transparent}.alert-info{background:var(--info-soft);color:var(--info);border-color:color-mix(in srgb,var(--info) 30%,transparent)}.alert-warning{background:var(--warning-soft);color:var(--warning);border-color:color-mix(in srgb,var(--warning) 30%,transparent)}.alert-danger{background:var(--danger-soft);color:var(--danger);border-color:color-mix(in srgb,var(--danger) 30%,transparent)}.alert-success{background:var(--success-soft);color:var(--success);border-color:color-mix(in srgb,var(--success) 30%,transparent)}.alert p,.alert ul{color:var(--text)}.empty{text-align:center;padding:40px 20px;color:var(--text-2);display:grid;gap:10px;justify-items:center}.empty h3{color:var(--text)}.spinner{width:22px;height:22px;border-radius:50%;border:3px solid var(--surface-3);border-top-color:var(--primary);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.skeleton{background:linear-gradient(90deg,var(--surface-2),var(--surface-3),var(--surface-2));background-size:200% 100%;animation:shimmer 1.2s infinite;border-radius:var(--radius-sm);height:14px}@keyframes shimmer{to{background-position:-200% 0}}.toast-region{position:fixed;right:16px;bottom:16px;z-index:200;display:grid;gap:8px;max-width:min(420px,calc(100vw - 32px))}.toast{background:var(--text);color:var(--bg);padding:12px 16px;border-radius:var(--radius);box-shadow:var(--shadow-lg);display:flex;gap:12px;align-items:flex-start;justify-content:space-between}.toast-error{background:var(--danger);color:#fff}dialog.dialog{border:0;padding:0;border-radius:var(--radius-lg);background:var(--surface);color:var(--text);box-shadow:var(--shadow-lg);width:min(560px,calc(100vw - 32px));max-height:calc(100vh - 48px)}dialog.dialog::backdrop{background:#0a0c1880}.dialog-header{padding:18px 20px 0}.dialog-body{padding:16px 20px;display:grid;gap:14px}.dialog-footer{padding:0 20px 18px;display:flex;justify-content:flex-end;gap:8px;flex-wrap:wrap}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:20px;overflow-x:auto}.tab{padding:10px 14px;border:0;background:none;color:var(--text-2);font:inherit;font-weight:600;cursor:pointer;border-bottom:2px solid transparent;white-space:nowrap}.tab[aria-selected=true]{color:var(--primary);border-bottom-color:var(--primary)}.board{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(220px,1fr);gap:12px;overflow-x:auto;padding-bottom:8px}.board-col{background:var(--surface-2);border-radius:var(--radius);padding:10px;min-height:120px}.board-col h3{font-size:.85rem;display:flex;justify-content:space-between;margin-bottom:8px;color:var(--text-2)}.board-card{display:block;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px;margin-bottom:8px;text-decoration:none;color:var(--text)}.board-card:hover{border-color:var(--primary);color:var(--text)}.coverage{display:grid;gap:8px}.coverage-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;align-items:center;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius-sm)}.legend{display:flex;flex-wrap:wrap;gap:8px 14px;font-size:.84rem;color:var(--text-2)}.timeline{list-style:none;margin:0;padding:0;display:grid;gap:12px}.timeline li{display:grid;grid-template-columns:12px 1fr;gap:12px}.timeline .dot{width:10px;height:10px;border-radius:50%;background:var(--primary);margin-top:6px}.auth-page{min-height:100vh;display:grid;place-items:center;padding:24px 16px}.auth-card{width:min(440px,100%)}.kv{display:grid;grid-template-columns:max-content 1fr;gap:6px 16px;font-size:.92rem}.kv dt{color:var(--text-3)}.kv dd{margin:0}.prose{white-space:pre-wrap;line-height:1.6}.pill-list{display:flex;flex-wrap:wrap;gap:6px}.grow{flex:1 1 auto;min-width:0}.exam-bar{position:sticky;top:0;z-index:5;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;padding:12px 16px;margin-bottom:16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}.exam-timer{font-variant-numeric:tabular-nums;font-size:1.4rem;font-weight:700;padding:2px 10px;border-radius:var(--radius);border:1px solid var(--border)}.exam-timer-low{color:var(--danger);border-color:currentColor}.exam-nav{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(40px,1fr));gap:6px}.exam-nav-btn{width:100%;min-height:40px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);color:var(--text);font:inherit;cursor:pointer}.exam-nav-btn.is-answered{background:var(--primary-soft);border-color:var(--primary)}.exam-nav-btn[aria-current=step]{outline:2px solid var(--primary);outline-offset:1px;font-weight:700}.exam-option{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius)}.exam-option.is-checked{border-color:var(--primary)}.exam-option input{margin-top:3px;width:18px;height:18px;flex:none}.exam-option label{flex:1;cursor:pointer}.code-block{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.86rem;line-height:1.5;background:var(--surface-2);border:1px solid var(--border);border-radius:8px;padding:10px 12px;margin:0;overflow-x:auto;white-space:pre;tab-size:2}textarea.code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.88rem;line-height:1.5;tab-size:2;white-space:pre;overflow-x:auto}.code-lines{counter-reset:line}.code-lines span{display:block}.code-lines span:before{counter-increment:line;content:counter(line);display:inline-block;width:3ch;margin-right:12px;text-align:right;color:var(--text-3);-webkit-user-select:none;user-select:none}.hint{color:var(--text-3);font-size:.84rem}.hint.hint-warning,.field .hint.hint-warning{color:var(--warning);font-weight:500}
