:root{--brand-primary: #2D62ED;--brand-secondary: #0D2167;--bg-color: #F8FAFF;--card-bg: #FFFFFF;--accent-blue: #E3F2FD;--accent-orange: #FFF3E0;--accent-orange-border: #FFE0B2;--accent-red: #FFEBEE;--text-primary: #1A1A1A;--text-secondary: #64748B;--text-white: #FFFFFF;--radius-xl: 24px;--radius-lg: 20px;--radius-md: 12px;--radius-sm: 8px;--font-main: "Inter", sans-serif;--font-display: "Outfit", sans-serif;--transition-fast: .2s cubic-bezier(.4, 0, .2, 1);--transition-default: .3s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}body{font-family:var(--font-main);background-color:var(--bg-color);color:var(--text-primary);line-height:1.5;-webkit-font-smoothing:antialiased;min-height:100vh}h1,h2,h3,h4,.font-display{font-family:var(--font-display)}.elevation-1{box-shadow:0 4px 12px #00000005}.elevation-2{box-shadow:0 8px 24px #0000000a}.card{background:var(--card-bg);border-radius:var(--radius-lg);padding:16px;transition:var(--transition-default)}.btn-primary{background-color:var(--brand-primary);color:var(--text-white);border:none;border-radius:var(--radius-md);padding:16px 24px;font-size:16px;font-weight:600;cursor:pointer;transition:var(--transition-default);display:flex;align-items:center;justify-content:center;gap:8px;width:100%}.btn-primary:hover{filter:brightness(1.1);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-primary:disabled{background-color:#cbd5e1;color:#94a3b8;cursor:not-allowed;transform:none}.input-container{margin-bottom:24px}.form-input{width:100%;padding:14px 16px;border-radius:var(--radius-md);border:1.5px solid #E2E8F0;font-size:16px;background-color:var(--card-bg);transition:var(--transition-default);outline:none;font-family:var(--font-main)}.form-input:focus{border-color:var(--brand-primary);box-shadow:0 0 0 4px #2d62ed1a}.container{max-width:600px;margin:0 auto;padding:0 20px}@media (min-width: 1024px){.container{max-width:1200px}}.flex-center{display:flex;align-items:center;justify-content:center}.marks-grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}@media (max-width: 480px){.marks-grid{grid-template-columns:1fr}}@media (min-width: 768px){.grid-responsive{grid-template-columns:repeat(2,1fr)}}@media (min-width: 1200px){.grid-responsive{grid-template-columns:repeat(3,1fr)}}.grid-cols-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}@media (max-width: 480px){.grid-cols-2{grid-template-columns:1fr}}.container{max-width:100%;margin:0 auto;padding:0 16px;width:100%}@media (min-width: 640px){.container{max-width:600px}}@media (min-width: 1024px){.container{max-width:1000px}}@media (min-width: 1280px){.container{max-width:1200px}}.desktop-only{display:none}@media (min-width: 1024px){.desktop-only{display:block}.mobile-only{display:none}}.flex-between{display:flex;align-items:center;justify-content:space-between}.safe-area{padding-bottom:env(safe-area-inset-bottom,20px)}.sidebar{width:280px;background:#fff;height:100vh;position:sticky;top:0;border-right:1px solid #F1F5F9;padding:32px 24px}.bottom-nav{position:fixed;bottom:0;left:0;right:0;background:#fff;display:flex;justify-content:space-around;padding:12px 0 24px;box-shadow:0 -4px 12px #0000000d;z-index:1000}@media (min-width: 1024px){.bottom-nav{display:none}}.nav-link{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:12px;color:#64748b;text-decoration:none;font-weight:600;transition:all .2s;margin-bottom:4px}.nav-link.active{background-color:var(--accent-blue);color:var(--brand-primary)}.nav-link:hover:not(.active){background-color:#f8fafc;color:#1a1a1a}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade{animation:fadeIn .4s ease-out forwards}.no-scrollbar::-webkit-scrollbar{display:none}.no-scrollbar{-ms-overflow-style:none;scrollbar-width:none}