:root{--primary-950:#022c22;--primary-900:#064e3b;--primary-800:#065f46;--primary-700:#047857;--primary-600:#059669;--primary-500:#10b981;--primary-400:#34d399;--primary-200:#a7f3d0;--primary-100:#d1fae5;--primary-50:#ecfdf5;--accent-600:#d97706;--accent-500:#f59e0b;--accent-400:#fbbf24;--accent-100:#fef3c7;--accent-50:#fffbeb;--danger-600:#dc2626;--danger-500:#ef4444;--danger-100:#fee2e2;--danger-50:#fef2f2;--info-600:#2563eb;--info-500:#3b82f6;--info-100:#dbeafe;--font-sans:"Plus Jakarta Sans", system-ui, -apple-system, sans-serif;--font-malayalam:"Noto Sans Malayalam", "Manjari", sans-serif;--font-mono:"JetBrains Mono", monospace;--bg-main:#0a0f0d;--bg-surface:#111a16;--bg-surface-elevated:#182420;--bg-surface-hover:#1f2f2a;--border-subtle:#10b9811f;--border-strong:#10b98147;--text-main:#f3f4f6;--text-muted:#9ca3af;--text-faint:#6b7280;--text-inverse:#03140f;--shadow-sm:0 1px 2px #0000004d;--shadow-md:0 4px 14px #0006, 0 0 1px #10b9811a;--shadow-lg:0 10px 30px -5px #0009, 0 0 20px -3px #10b98126;--shadow-3d:0 6px 20px -2px #00000080, inset 0 1px 0 0 #ffffff1f, inset 0 -1px 0 0 #00000059;--shadow-glow:0 0 25px #10b98140;--radius-sm:8px;--radius-md:12px;--radius-lg:18px;--radius-xl:24px;--radius-full:9999px;--transition-fast:.18s cubic-bezier(.4, 0, .2, 1);--transition-normal:.28s cubic-bezier(.4, 0, .2, 1)}[data-theme=light]{--bg-main:#f8faf9;--bg-surface:#fff;--bg-surface-elevated:#f0fdf4;--bg-surface-hover:#e6f7ee;--border-subtle:#05966926;--border-strong:#05966959;--text-main:#0f172a;--text-muted:#4b5563;--text-faint:#9ca3af;--text-inverse:#fff;--shadow-sm:0 1px 3px #0000000f;--shadow-md:0 4px 12px #05966914;--shadow-lg:0 10px 25px #0596691f;--shadow-3d:0 4px 16px #0596691a, inset 0 1px 0 0 #fffc, inset 0 -1px 0 0 #05966926;--shadow-glow:0 0 20px #10b98133}*{box-sizing:border-box;margin:0;padding:0}html,body{-webkit-overflow-scrolling:touch;-webkit-tap-highlight-color:transparent;width:100%;max-width:100vw;overflow-x:hidden}body{font-family:var(--font-sans);background-color:var(--bg-main);color:var(--text-main);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-image:radial-gradient(60% 40% at 50% -20%,#10b9811f,#0000),radial-gradient(350px at 90% 80%,#f59e0b0d,#0000);background-attachment:fixed;min-height:100vh;line-height:1.55}.ml-text{font-family:var(--font-malayalam);letter-spacing:.01em}button{cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;font-family:inherit}a{color:inherit;text-decoration:none}::-webkit-scrollbar{width:7px;height:7px}::-webkit-scrollbar-track{background:var(--bg-main)}::-webkit-scrollbar-thumb{background:var(--primary-700);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--primary-500)}.glass-panel{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-3d);-webkit-backdrop-filter:blur(14px);transition:transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast)}.glass-panel-elevated{background:var(--bg-surface-elevated);border:1px solid var(--border-strong);border-radius:var(--radius-lg);box-shadow:var(--shadow-3d), 0 12px 30px #00000059}.glass-panel-hover:hover{border-color:var(--border-strong);box-shadow:var(--shadow-3d), 0 14px 28px #0006;transform:translateY(-2px)scale(1.005)}.btn{border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;justify-content:center;align-items:center;gap:.5rem;padding:.65rem 1.25rem;font-size:.925rem;font-weight:600;display:inline-flex;box-shadow:0 2px 5px #00000040,inset 0 1px #ffffff26}.btn:active{transform:translateY(1.5px)scale(.985);box-shadow:0 1px 2px #0000004d,inset 0 1px 2px #00000040}.btn-primary{background:linear-gradient(135deg, var(--primary-600), var(--primary-500));color:#fff;box-shadow:0 2px 10px #10b9814d}.btn-primary:hover{background:linear-gradient(135deg, var(--primary-500), var(--primary-400));transform:translateY(-1px);box-shadow:0 4px 16px #10b98173}.btn-accent{background:linear-gradient(135deg, var(--accent-600), var(--accent-500));color:#03140f;box-shadow:0 2px 10px #f59e0b4d}.btn-accent:hover{background:linear-gradient(135deg, var(--accent-500), var(--accent-400));transform:translateY(-1px)}.btn-secondary{background:var(--bg-surface-elevated);border:1px solid var(--border-subtle);color:var(--text-main)}.btn-secondary:hover{background:var(--bg-surface-hover);border-color:var(--border-strong)}.btn-outline-danger{color:var(--danger-500);background:0 0;border:1px solid #ef444466}.btn-outline-danger:hover{background:var(--danger-500);color:#fff}.badge{border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.05em;align-items:center;gap:.35rem;padding:.2rem .65rem;font-size:.75rem;font-weight:700;display:inline-flex}.badge-primary{color:var(--primary-400);background:#10b98126;border:1px solid #10b98140}.badge-accent{color:var(--accent-400);background:#f59e0b26;border:1px solid #f59e0b40}.badge-danger{color:var(--danger-500);background:#ef444426;border:1px solid #ef444440}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes pulseGlow{0%,to{box-shadow:0 0 10px #10b98133}50%{box-shadow:0 0 22px #10b98180}}.animate-fade-in{animation:.25s ease-out forwards 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crestShimmer3D{0%,to{transform:perspective(600px)rotateY(0)rotateX(0)}25%{transform:perspective(600px)rotateY(7deg)rotateX(-3deg)translateZ(4px)}75%{transform:perspective(600px)rotateY(-7deg)rotateX(3deg)translateZ(4px)}}.card-3d{transform-style:preserve-3d;will-change:transform;transition:transform .28s cubic-bezier(.4,0,.2,1),box-shadow .28s cubic-bezier(.4,0,.2,1)}.card-3d:hover{border-color:#34d39973;transform:perspective(1000px)translateY(-5px)rotateX(2deg)rotateY(-1deg)scale(1.01);box-shadow:0 18px 36px -10px #000000b3,0 0 25px #10b98140}.card-3d-minimal{transform-style:preserve-3d;transition:transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);will-change:transform;position:relative}.card-3d-minimal:hover{border-color:#34d39973;transform:perspective(1000px)translateY(-4px)translateZ(6px)rotateX(1.5deg);box-shadow:0 16px 32px -8px #0009,0 0 20px #10b98133,inset 0 1px #ffffff26}.crest-3d{transform-style:preserve-3d;will-change:transform;transition:transform .3s;animation:8s ease-in-out infinite crestShimmer3D}.crest-3d:hover{transform:perspective(600px)scale(1.08)rotateY(12deg)translateZ(6px)}.orb-glow{box-shadow:0 0 40px #10b98159,inset 0 0 25px #10b98133}.card-responsive-padding{padding:2.25rem 2rem}.btn-group-responsive{flex-wrap:wrap;justify-content:center;align-items:center;gap:1rem;display:flex}.desktop-only{display:block!important}.mobile-only{display:none!important}.mobile-bottom-nav{display:none}@media (width<=768px){.desktop-only{display:none!important}.mobile-only{display:block!important}.card-responsive-padding{padding:1.25rem 1rem!important}.btn-group-responsive{flex-direction:column!important;gap:.75rem!important;width:100%!important}.btn-group-responsive>button,.btn-group-responsive>a,.btn-group-responsive>div{justify-content:center!important;width:100%!important}main{padding-bottom:6rem!important}.mobile-bottom-nav{z-index:990;-webkit-backdrop-filter:blur(16px);padding:.4rem .25rem calc(.4rem + env(safe-area-inset-bottom));background:#0a0f0df2;border-top:1px solid #10b98140;justify-content:space-around;align-items:center;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -4px 20px #0009;display:flex!important}.mobile-nav-item{justifyContent:center;color:var(--text-muted);background:0 0;border-radius:8px;flex-direction:column;flex:1;align-items:center;gap:2px;padding:.35rem .2rem;font-size:.68rem;font-weight:600;transition:all .18s;display:flex}.mobile-nav-item.active{color:#34d399}.mobile-nav-item.active .nav-icon-wrapper{background:#10b9812e;border-radius:12px;padding:3px 12px}}.two-col-responsive{grid-template-columns:minmax(0,1fr) 360px;align-items:start;gap:1.5rem;display:grid}.mock-exam-grid{grid-template-columns:minmax(0,1fr) 320px;align-items:start;gap:1.25rem;display:grid}.spatial-lab-grid{grid-template-columns:minmax(0,1.2fr) minmax(0,1.1fr);align-items:start;gap:1.5rem;display:grid}.video-visualizer-grid{grid-template-columns:minmax(0,1fr) 360px;align-items:start;gap:1.5rem;display:grid}@media (width<=992px){.two-col-responsive,.mock-exam-grid,.spatial-lab-grid,.video-visualizer-grid{grid-template-columns:1fr!important}}.protected-content,.protected-question,.mock-exam-grid,.pyq-reader-container{-webkit-user-select:none!important;user-select:none!important;-webkit-touch-callout:none!important}.trial-watermark-overlay{pointer-events:none;z-index:50;opacity:.05;-webkit-user-select:none;user-select:none;flex-direction:column;justify-content:space-around;width:100vw;height:100vh;display:flex;position:fixed;top:0;left:0;overflow:hidden}.trial-watermark-text{font-size:1.15rem;font-weight:800;font-family:var(--font-mono);color:#fff;white-space:nowrap;letter-spacing:.35em;text-align:center;padding:2.5rem 0;transform:rotate(-25deg)}@media print{body{display:none!important}}