:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:radial-gradient(ellipse at top, #fafaf8 0%, #f4f3ef 55%, #eeede8 100%);--text:#1a1918;--muted:#79746c;--card-bg:#fff;--border:#ddd9d2;--button-bg:#1a1918;--button-text:#fff;--pre-bg:#141210;--pre-text:#e8e4dc;--shadow:0 8px 24px #1a191812;--toggle-bg:#ffffffe6;--toggle-border:#1a191826}:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:radial-gradient(ellipse at top, #1c1b19 0%, #141210 55%, #0e0d0b 100%);--text:#e8e4dc;--muted:#9e9a92;--card-bg:#1c1b19eb;--border:#c8c3b92e;--button-bg:#e8e4dc;--button-text:#1a1918;--pre-bg:#0a0908;--pre-text:#e8e4dc;--shadow:0 10px 28px #0006;--toggle-bg:#1c1b19eb;--toggle-border:#c8c3b938}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;padding:0;font-family:IBM Plex Sans,sans-serif;transition:background .25s,color .25s}main{max-width:960px;margin:0 auto;padding:48px 20px}h1{margin:0 0 16px;font-size:28px}label{margin-bottom:6px;font-weight:600;display:block}input{border:1px solid var(--border);background:var(--card-bg);width:100%;color:var(--text);border-radius:8px;outline:none;margin-bottom:0;padding:10px 12px;font-family:inherit;font-size:15px;transition:border-color .15s}input:focus{border-color:var(--text)}input:focus-visible{outline:2px solid var(--text);outline-offset:2px}button{background:var(--button-bg);color:var(--button-text);cursor:pointer;border:0;border-radius:8px;padding:10px 18px;font-family:inherit;font-size:14px;font-weight:600;transition:opacity .15s}button:hover:not(:disabled){opacity:.85}button:focus-visible{outline:2px solid var(--text);outline-offset:2px}button:disabled{opacity:.6;cursor:not-allowed}pre{background:var(--pre-bg);color:var(--pre-text);border-radius:8px;padding:16px;overflow-x:auto}.card{background:var(--card-bg);box-shadow:var(--shadow);border-radius:16px;padding:24px}.theme-toggle{border:1px solid var(--toggle-border);background:var(--toggle-bg);width:36px;height:36px;color:var(--text);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:999px;justify-content:center;align-items:center;padding:0;transition:background .25s,color .25s,transform .2s;display:flex;position:fixed;top:20px;right:20px}.theme-toggle:focus-visible{outline:2px solid var(--text);outline-offset:2px}.theme-toggle:hover{transform:translateY(-1px)}@media (max-width:640px){main{padding-top:64px}.theme-toggle{top:12px;right:12px}}.stack{gap:16px;display:grid}.helper{color:var(--muted);margin:0;font-size:13px;line-height:1.5}.landing{flex-direction:column;min-height:calc(100svh - 96px);display:flex}.hero{flex-direction:column;padding-bottom:40px;display:flex}.eyebrow{letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 20px;font-size:11px;font-weight:600}.hero-headline{letter-spacing:-.025em;margin:0 0 16px;font-size:clamp(40px,6vw,70px);font-weight:600;line-height:1.05}.hero-headline em{font-style:italic;font-weight:400}.hero-sub{color:var(--muted);max-width:480px;margin:0 0 28px;font-size:16px;line-height:1.65}.cta-link{color:var(--text);border-bottom:1.5px solid;align-items:center;gap:8px;width:fit-content;padding-bottom:2px;font-size:15px;font-weight:600;text-decoration:none;transition:opacity .15s;display:inline-flex}.cta-link:hover{opacity:.55}.features{border:1px solid var(--border);border-radius:16px;grid-template-columns:repeat(3,1fr);display:grid;overflow:hidden}.feature{background:var(--card-bg);flex-direction:column;gap:8px;padding:22px 24px;display:flex}.feature+.feature{border-left:1px solid var(--border)}.feature-num{letter-spacing:.1em;color:var(--muted);margin-bottom:4px;font-size:11px;font-weight:600;display:block}.feature-title{margin:0;font-size:16px;font-weight:600}.feature-desc{color:var(--muted);margin:0;font-size:14px;line-height:1.65}.landing-footer{border-top:1px solid var(--border);color:var(--muted);margin-top:auto;padding:20px 0 0;font-size:13px}@media (max-width:720px){.features{grid-template-columns:1fr}.feature+.feature{border-left:none;border-top:1px solid var(--border)}.hero-headline{font-size:clamp(34px,10vw,52px)}.hero{padding-bottom:28px}}.auth-shell{justify-content:center;align-items:center;min-height:calc(100svh - 96px);display:flex}.auth-card{flex-direction:column;gap:24px;width:100%;max-width:388px;display:flex}.auth-title{letter-spacing:-.015em;margin:0 0 4px;font-size:26px;font-weight:600}.auth-sub{color:var(--muted);margin:0;font-size:14px}.btn-ghost{color:var(--text);border:1px solid var(--border);background:0 0;justify-content:center;align-items:center;gap:8px;width:100%;padding:10px 14px;transition:background .15s,border-color .15s;display:flex}.btn-ghost:hover:not(:disabled){opacity:1;background:var(--card-bg);border-color:var(--text)}.divider{color:var(--muted);align-items:center;gap:12px;font-size:12px;display:flex}.divider:before,.divider:after{content:"";background:var(--border);flex:1;height:1px}.field{flex-direction:column;gap:6px;display:flex}.field label{color:var(--text);margin:0;font-size:13px;font-weight:600}.auth-form{flex-direction:column;gap:16px;display:flex}.auth-error{color:#c0392b;background:#c0392b12;border:1px solid #c0392b2e;border-radius:8px;margin:0;padding:10px 12px;font-size:13px}.btn-full{width:100%;padding:11px 14px;font-size:15px}.dashboard-shell{gap:20px}.dashboard-controls{z-index:20;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);position:sticky;top:10px}.dashboard-header{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.dashboard-kicker{letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 6px;font-size:11px;font-weight:600}.dashboard-title{margin:0 0 8px}.dashboard-header-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:10px;display:flex}.btn-outline{color:var(--text);border:1px solid var(--border);background:0 0}.btn-ghost-inline{color:var(--text);border:1px solid var(--border);background:0 0;padding:8px 14px}.dashboard-filter-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:14px;display:grid}.dashboard-controls-footer{justify-content:space-between;align-items:center;gap:10px;margin-top:10px;display:flex}.dashboard-metrics{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;display:grid}.metric-card{padding:18px}.metric-label{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin:0 0 6px;font-size:12px;font-weight:600}.metric-value{letter-spacing:-.02em;margin:0;font-size:30px;font-weight:600;line-height:1}.dashboard-section-head{justify-content:space-between;align-items:center;gap:12px;display:flex}.students-table-wrap{border:1px solid var(--border);border-radius:12px;overflow-x:auto}.students-table{border-collapse:collapse;width:100%;font-size:14px}.students-table th{text-align:left;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);border-bottom:1px solid var(--border);background:#78736c14;padding:12px;font-size:12px;font-weight:600}.students-table td{border-bottom:1px solid var(--border);vertical-align:middle;padding:12px}.students-table tbody tr:last-child td{border-bottom:0}.students-table tbody tr:hover{background:#78736c12}.cell-name{font-weight:600}.status-pill{letter-spacing:.04em;text-transform:uppercase;border-radius:999px;align-items:center;padding:4px 10px;font-size:11px;font-weight:600;display:inline-flex}.status-success{color:#1f8b65;background:#2090662e}.status-warning{color:#a1680e;background:#d5972c33}.status-danger{color:#b83c2f;background:#c94a392e}.status-muted{color:var(--muted);background:#78736c2e}:root[data-theme=dark] .status-success{color:#8de7c2;background:#4ac59529}:root[data-theme=dark] .status-warning{color:#ffd287;background:#f5ba4e33}:root[data-theme=dark] .status-danger{color:#ffb6aa;background:#eb665933}.view-link{text-underline-offset:3px;color:var(--text);font-weight:600}.mobile-student-list{gap:12px;display:none}.student-mobile-card{border:1px solid var(--border);border-radius:12px;gap:8px;padding:14px;display:grid}.student-mobile-card h3{margin:0;font-size:18px}.student-mobile-top{justify-content:space-between;align-items:center;gap:12px;display:flex}.empty-state{border:1px dashed var(--border);border-radius:12px;gap:10px;padding:20px;display:grid}.empty-state h3{margin:0}.skeleton-row{border:1px solid var(--border);background:linear-gradient(90deg,#8c867e1f 0%,#8c867e33 50%,#8c867e1f 100%) 0 0/220% 100%;border-radius:12px;height:54px;animation:1.2s infinite skeleton-pulse}.modal-overlay{z-index:70;background:#00000080;place-items:center;padding:18px;display:grid;position:fixed;inset:0}.add-student-modal{width:min(880px,100%);max-height:calc(100svh - 36px);overflow:auto}@keyframes skeleton-pulse{0%{background-position:220% 0}to{background-position:-220% 0}}@media (max-width:900px){.dashboard-filter-grid,.dashboard-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:720px){.dashboard-controls{position:static}.dashboard-header{flex-direction:column;align-items:stretch}.dashboard-header-actions{justify-content:flex-start}.dashboard-filter-grid{grid-template-columns:1fr}.dashboard-controls-footer{flex-direction:column;align-items:flex-start}.dashboard-metrics{grid-template-columns:1fr 1fr}.students-table-wrap{display:none}.mobile-student-list{display:grid}}