:root{--bg-color: #0f172a;--card-bg: #1e293b;--primary: #fbbf24;--primary-hover: #f59e0b;--text-main: #f8fafc;--text-muted: #94a3b8;--accent: #38bdf8;--danger: #ef4444;--success: #22c55e;--border: rgba(255, 255, 255, .1);--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--radius: 12px}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,-apple-system,sans-serif}body{background-color:var(--bg-color);color:var(--text-main);line-height:1.5;-webkit-font-smoothing:antialiased}.container{max-width:1100px;margin:0 auto;padding:1.5rem;width:100%}.card{background:var(--card-bg);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow);border:1px solid var(--border);height:auto}h1{font-size:2.2rem;text-align:center;margin-bottom:2rem;color:#fff}h2{font-size:1.4rem;color:var(--primary);margin-bottom:1.2rem}.responsive-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:1.5rem}.calendar-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(90px,1fr));gap:10px;margin-top:1rem}@media (max-width: 900px){.responsive-grid{grid-template-columns:1fr}}@media (max-width: 600px){.container{padding:.75rem}h1{font-size:1.6rem;margin-top:1rem}nav{padding:1rem;flex-direction:column;text-align:center}.nav-links{flex-wrap:wrap;justify-content:center;gap:.75rem;width:100%}.card{padding:1.25rem}.calendar-grid{grid-template-columns:repeat(3,1fr)}}button{background:var(--primary);color:#000;border:none;padding:.75rem 1.5rem;border-radius:var(--radius);font-weight:600;cursor:pointer;transition:all .2s ease}button:hover{background:var(--primary-hover);transform:translateY(-2px)}button.secondary{background:transparent;border:1px solid var(--primary);color:var(--primary)}input,select{width:100%;padding:.75rem;background:#0f172a;border:1px solid var(--border);border-radius:var(--radius);color:#fff;margin-bottom:1rem}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem}nav{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 2rem;background:var(--card-bg);border-bottom:1px solid var(--border)}.nav-links{display:flex;gap:2rem}.nav-links a{color:var(--text-muted);text-decoration:none;transition:color .2s}.nav-links a:hover{color:var(--primary)}.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:10px;margin-top:1rem}.time-slot{padding:10px;text-align:center;border-radius:8px;background:#22c55e33;color:var(--success);cursor:pointer;border:1px solid var(--success);transition:all .2s ease;font-weight:700}.time-slot:hover{background:#22c55e66}.time-slot.occupied{background:#ef444433;color:var(--danger);border:1px solid var(--danger);cursor:not-allowed;opacity:.8}.time-slot.selected{background:var(--primary);color:#000;border:2px solid white;transform:scale(1.05)}