:root{--bg-light: #f8fafc;--bg-card: #ffffff;--bg-card-hover: #ffffff;--border-light: #e2e8f0;--border-hover: #cbd5e1;--border-glow: rgba(79, 70, 229, .3);--primary: #4f46e5;--primary-glow: #6366f1;--primary-dark: #4338ca;--primary-light: #eeeaef;--accent-cyan: #0284c7;--accent-emerald: #059669;--accent-amber: #d97706;--accent-rose: #e11d48;--accent-purple: #7c3aed;--text-main: #0f172a;--text-muted: #475569;--text-dim: #94a3b8;--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px;--radius-xl: 28px;--shadow-light: 0 4px 20px -2px rgba(15, 23, 42, .06), 0 2px 6px -1px rgba(15, 23, 42, .03);--shadow-hover: 0 10px 25px -3px rgba(79, 70, 229, .12), 0 4px 10px -2px rgba(79, 70, 229, .08);--font-heading: "Outfit", sans-serif;--font-body: "Inter", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-light);background-image:radial-gradient(at 10% 10%,rgba(99,102,241,.05) 0px,transparent 50%),radial-gradient(at 90% 20%,rgba(14,165,233,.05) 0px,transparent 50%),radial-gradient(at 50% 90%,rgba(225,29,72,.04) 0px,transparent 50%);background-attachment:fixed;color:var(--text-main);font-family:var(--font-body);min-height:100vh;line-height:1.5;-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);letter-spacing:-.02em;color:var(--text-main)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#f1f5f9}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}.glass-panel{background:var(--bg-card);border:1px solid var(--border-light);box-shadow:var(--shadow-light);border-radius:var(--radius-md);transition:all .25s cubic-bezier(.4,0,.2,1)}.glass-panel:hover{border-color:var(--border-hover);box-shadow:var(--shadow-hover)}.btn-primary{background:linear-gradient(135deg,#4f46e5,#4338ca);color:#fff;border:none;padding:10px 20px;border-radius:var(--radius-sm);font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:all .2s ease;box-shadow:0 4px 12px #4f46e540}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 18px #4f46e559;filter:brightness(1.05)}.btn-secondary{background:#f1f5f9;color:#1e293b;border:1px solid #cbd5e1;padding:10px 18px;border-radius:var(--radius-sm);font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:all .2s ease}.btn-secondary:hover{background:#e2e8f0;border-color:#94a3b8}.btn-outline-cyan{background:#f0f9ff;color:var(--accent-cyan);border:1px solid #bae6fd;padding:8px 16px;border-radius:var(--radius-sm);font-weight:600;cursor:pointer;transition:all .2s ease}.btn-outline-cyan:hover{background:#e0f2fe;border-color:#7dd3fc}.badge{display:inline-block;padding:4px 10px;border-radius:9999px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em}.badge-indigo{background:#e0e7ff;color:#3730a3;border:1px solid #c7d2fe}.badge-cyan{background:#e0f2fe;color:#0369a1;border:1px solid #bae6fd}.badge-emerald{background:#d1fae5;color:#065f46;border:1px solid #a7f3d0}.badge-amber{background:#fef3c7;color:#92400e;border:1px solid #fde68a}.badge-purple{background:#f3e8ff;color:#6b21a8;border:1px solid #e9d5ff}.badge-rose{background:#ffe4e6;color:#9f1239;border:1px solid #fecdd3}.form-input{width:100%;background:#fff;border:1px solid #cbd5e1;padding:11px 15px;border-radius:var(--radius-sm);color:var(--text-main);font-size:.95rem;outline:none;transition:all .2s ease}.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #6366f126}.flashcard-wrapper{perspective:1000px;cursor:pointer}.flashcard-inner{position:relative;width:100%;height:280px;transition:transform .6s cubic-bezier(.4,0,.2,1);transform-style:preserve-3d}.flashcard-wrapper.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{position:absolute;width:100%;height:100%;-webkit-backface-visibility:hidden;backface-visibility:hidden;border-radius:var(--radius-lg);padding:24px;display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 10px 30px -5px #0f172a14}.flashcard-front{background:#fff;border:1px solid #e2e8f0}.flashcard-back{background:linear-gradient(145deg,#eef2ff,#e0e7ff);border:1px solid #c7d2fe;transform:rotateY(180deg)}@keyframes pulseGlow{0%,to{opacity:.7}50%{opacity:1}}.pulse-glow{animation:pulseGlow 3s infinite ease-in-out}