* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: #f8f9fa;
        }

        header {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            color: white;
            padding: 2rem;
            text-align: center;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        header h1 {
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
            letter-spacing: 2px;
        }

        header span {
            font-size: 1.1rem;
            opacity: 0.9;
            letter-spacing: 1px;
        }

        nav {
            background: #0f3460;
            padding: 1rem;
            text-align: center;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }

        nav a {
            color: white;
            text-decoration: none;
            margin: 0 1.5rem;
            font-weight: 500;
            transition: color 0.3s;
        }

        nav a:hover {
            color: #00d4ff;
        }

        main {
            max-width: 1200px;
            margin: 3rem auto;
            padding: 0 1rem;
        }

        .hero {
            background: white;
            padding: 2rem;
            border-radius: 8px;
            margin-bottom: 3rem;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            text-align: center;
        }

        .hero h2 {
            color: #1a1a2e;
            margin-bottom: 1rem;
            font-size: 2rem;
        }

        .hero p {
            color: #666;
            font-size: 1.1rem;
            margin-bottom: 2rem;
        }

        .hero button {
            background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
            color: white;
            padding: 0.8rem 2rem;
            border: none;
            border-radius: 4px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }

        .hero button:hover {
            transform: scale(1.05);
            box-shadow: 0 4px 12px rgba(0, 212, 255, 0.3);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
        }

        .service-card {
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
        }

        .service-card img {
            width: 100%;
            height: 250px;
            object-fit: cover;
        }

        .service-card-content {
            padding: 2rem;
        }

        .service-card h3 {
            color: #1a1a2e;
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }

        .service-card ul {
            list-style: none;
            margin-bottom: 1.5rem;
        }

        .service-card li {
            padding: 0.4rem 0;
            padding-left: 1.5rem;
            position: relative;
            color: #555;
        }

        .service-card li:before {
            content: "✓";
            position: absolute;
            left: 0;
            color: #00d4ff;
            font-weight: bold;
        }

        .price {
            font-size: 1.8rem;
            color: #0f3460;
            font-weight: bold;
            margin-bottom: 1.5rem;
        }

        .service-card button {
            width: 100%;
            background: #00d4ff;
            color: white;
            padding: 0.8rem 1.5rem;
            border: none;
            border-radius: 4px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }

        .service-card button:hover {
            background: #0099cc;
        }

        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            display: none;
            justify-content: center;
            align-items: center;
            z-index: 1000;
        }

        .modal-overlay.active {
            display: flex;
        }

        .modal-content {
            background: white;
            padding: 2rem;
            border-radius: 8px;
            max-width: 600px;
            width: 90%;
            max-height: 90vh;
            overflow-y: auto;
            box-shadow: 0 10px 40px rgba(0,0,0,0.3);
            position: relative;
        }

        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 2px solid #e0e0e0;
        }

        .modal-header h2 {
            color: #1a1a2e;
            font-size: 1.8rem;
            margin: 0;
        }

        .close-btn {
            background: none;
            border: none;
            font-size: 2rem;
            cursor: pointer;
            color: #666;
            padding: 0;
            width: 40px;
            height: 40px;
        }

        .close-btn:hover {
            color: #000;
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: #333;
        }

        input, select {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #ddd;
            border-radius: 4px;
            font-size: 1rem;
            font-family: inherit;
        }

        input:focus, select:focus {
            outline: none;
            border-color: #00d4ff;
        }

        .duration-info {
            background: #f0f8ff;
            padding: 1rem;
            border-radius: 4px;
            margin-top: 0.5rem;
            font-size: 0.9rem;
            color: #0f3460;
        }

        .warning {
            background: #fff3cd;
            color: #856404;
            padding: 1rem;
            border-radius: 4px;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }

        .package-options {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .package-option {
            display: flex;
            align-items: center;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.3s;
        }

        .package-option:hover {
            background: #f8f9fa;
        }

        .package-option input[type="radio"] {
            width: auto;
            margin-right: 1rem;
        }

        .package-option.selected {
            border-color: #00d4ff;
            background: #f0f8ff;
        }

        .time-slots {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
            gap: 1rem;
            margin-top: 1rem;
        }

        .time-slot {
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: 4px;
            text-align: center;
            cursor: pointer;
            font-weight: bold;
            transition: all 0.3s;
            background: white;
        }

        .time-slot:hover:not(:disabled) {
            background: #f0f8ff;
            border-color: #00d4ff;
        }

        .time-slot.selected {
            background: #00d4ff;
            color: white;
            border-color: #0099cc;
        }

        .time-slot:disabled {
            background: #f0f0f0;
            color: #999;
            cursor: not-allowed;
        }

        .button-group {
            display: flex;
            gap: 1rem;
            margin-top: 2rem;
        }

        .button-group button {
            flex: 1;
            padding: 0.8rem;
            border: none;
            border-radius: 4px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
            font-size: 1rem;
        }

        .btn-back {
            background: #999;
            color: white;
        }

        .btn-back:hover {
            background: #777;
        }

        .btn-next {
            background: #00d4ff;
            color: white;
        }

        .btn-next:hover {
            background: #0099cc;
        }

        .btn-confirm {
            background: #28a745;
            color: white;
        }

        .btn-confirm:hover:not(:disabled) {
            background: #218838;
        }

        .btn-confirm:disabled {
            background: #ccc;
            cursor: not-allowed;
        }

        .error-message {
            background: #f8d7da;
            color: #721c24;
            padding: 1rem;
            border-radius: 4px;
            margin-top: 1rem;
        }

        .step {
            display: none;
        }

        .step.active {
            display: block;
        }

        footer {
            background: #1a1a2e;
            color: white;
            text-align: center;
            padding: 2rem;
            margin-top: 4rem;
        }

        footer a {
            color: #00d4ff;
            text-decoration: none;
        }

        footer a:hover {
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            header h1 {
                font-size: 1.8rem;
            }

            .services-grid {
                grid-template-columns: 1fr;
            }

            .time-slots {
                grid-template-columns: repeat(2, 1fr);
            }
        }