: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 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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:100svh;padding:24px;display:flex;position:relative;overflow:hidden}.auth-bg-blob{filter:blur(140px);opacity:.08;z-index:0;pointer-events:none;border-radius:50%;width:600px;height:600px;animation:12s ease-in-out infinite alternate auth-blob-pulse;position:absolute}.auth-bg-blob-1{background:radial-gradient(circle, var(--border) 0%, transparent 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#c8c3b914}.auth-header{text-align:center;flex-direction:column;align-items:center;gap:12px;display:flex}.auth-logo-container{background:linear-gradient(135deg, var(--text) 0%, var(--muted) 100%);border:1px solid var(--border);width:56px;height:56px;box-shadow:var(--shadow);color:var(--card-bg);border-radius:16px;justify-content:center;align-items:center;margin-bottom:8px;display:flex;position:relative;overflow:hidden}.auth-logo-container:after{content:"";background:linear-gradient(#ffffff26,#0000);position:absolute;inset:0}.auth-title{letter-spacing:-.025em;background:linear-gradient(135deg, var(--text) 30%, var(--muted) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin:0;font-size:28px;font-weight:600}:root[data-theme=dark] .auth-title{background:linear-gradient(135deg,#fff 40%,#c8c3b9 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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}}