:root{--primary-color: #007bff;--secondary-color: #6c757d;--success-color: #28a745;--danger-color: #dc3545;--background-color: #f8f9fa;--card-bg: #ffffff;--text-color: #333}body{font-family:Inter,sans-serif;margin:0;padding:0;background-color:var(--background-color);color:var(--text-color)}.app-container{max-width:1200px;margin:0 auto;padding:20px}header{text-align:center;margin-bottom:40px}h1{color:var(--primary-color)}.gpu-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px;margin-bottom:40px}.gpu-card{background:var(--card-bg);padding:20px;border-radius:8px;box-shadow:0 2px 4px #0000001a}.status-badge{display:inline-block;padding:5px 10px;border-radius:4px;color:#fff;font-weight:700;margin-top:10px}.status-badge.available{background-color:var(--success-color)}.status-badge.occupied{background-color:var(--danger-color)}.reservation-section{display:grid;grid-template-columns:1fr 2fr;gap:40px}.form-container,.timeline-container{background:var(--card-bg);padding:20px;border-radius:8px;box-shadow:0 2px 4px #0000001a}.form-group{margin-bottom:15px}.form-group label{display:block;margin-bottom:5px;font-weight:700}.form-group input,.form-group select{width:100%;padding:8px;border:1px solid #ddd;border-radius:4px;box-sizing:border-box}button{background-color:var(--primary-color);color:#fff;border:none;padding:10px 20px;border-radius:4px;cursor:pointer;font-size:16px}button:hover{background-color:#0056b3}.reservation-table{width:100%;border-collapse:collapse}.reservation-table th,.reservation-table td{padding:12px;text-align:left;border-bottom:1px solid #ddd}.delete-btn{background-color:var(--danger-color);padding:5px 10px;font-size:14px}.delete-btn:hover{background-color:#bd2130}.error{color:var(--danger-color);margin-bottom:10px}.success{color:var(--success-color);margin-bottom:10px}@media(max-width:768px){.reservation-section{grid-template-columns:1fr}}