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

    body {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        min-height: 100vh;
        color: #333;
        line-height: 1.6;
    }

    .container {
        max-width: 400px;
        margin: 0 auto;
        padding: 20px;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }

    .header {
        text-align: center;
        margin-bottom: 30px;
        color: white;
    }

    .header h1 {
        font-size: 28px;
        font-weight: 700;
        margin-bottom: 10px;
        text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    }

    .header p {
        font-size: 16px;
        opacity: 0.9;
    }

    .booking-card {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        border-radius: 20px;
        padding: 30px;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
        flex: 1;
        position: relative;
        overflow: hidden;
    }

    .booking-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(90deg, #ff6b6b, #ee5a24, #ff9ff3, #54a0ff);
    }

    .step {
        display: none;
        animation: fadeIn 0.3s ease-in;
    }

    .step.active {
        display: block;
    }

    @keyframes fadeIn {
        from {
            opacity: 0;
            transform: translateY(10px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .step-header {
        text-align: center;
        margin-bottom: 25px;
    }

    .step-title {
        font-size: 22px;
        font-weight: 600;
        color: #2c3e50;
        margin-bottom: 5px;
    }

    .step-subtitle {
        color: #7f8c8d;
        font-size: 14px;
    }

    .service-options {
        display: grid;
        gap: 15px;
        margin-bottom: 20px;
    }

    .service-btn {
        background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
        border: none;
        border-radius: 15px;
        padding: 20px;
        color: white;
        font-size: 16px;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
        box-shadow: 0 4px 15px rgba(240, 147, 251, 0.3);
    }

    .service-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(240, 147, 251, 0.4);
    }

    .service-btn.manicure {
        background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
        color: #2c3e50;
        box-shadow: 0 4px 15px rgba(168, 237, 234, 0.3);
    }

    .service-btn.pedicure {
        background: linear-gradient(135deg, #d299c2 0%, #fef9d7 100%);
        color: #2c3e50;
        box-shadow: 0 4px 15px rgba(210, 153, 194, 0.3);
    }

    .calendar {
        display: grid;
        grid-template-columns: repeat(7, 1fr);
        gap: 8px;
        margin-bottom: 20px;
    }

    .calendar-header {
        text-align: center;
        font-weight: 600;
        color: #7f8c8d;
        padding: 10px 0;
        font-size: 12px;
    }

    .calendar-day {
        aspect-ratio: 1;
        border: none;
        border-radius: 10px;
        background: #f8f9fa;
        cursor: pointer;
        font-size: 14px;
        font-weight: 500;
        transition: all 0.2s ease;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .calendar-day:hover:not(.disabled) {
        background: #e9ecef;
        transform: scale(1.05);
    }

    .calendar-day.selected {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
    }

    .calendar-day.disabled {
        background: #dee2e6;
        color: #adb5bd;
        cursor: not-allowed;
    }

    .calendar-day.unavailable {
        background: #ffebee;
        color: #e57373;
        cursor: not-allowed;
    }

    .time-slots {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        margin-bottom: 20px;
    }

    .time-slot {
        background: #f8f9fa;
        border: 2px solid transparent;
        border-radius: 12px;
        padding: 15px;
        text-align: center;
        cursor: pointer;
        font-size: 14px;
        font-weight: 500;
        transition: all 0.2s ease;
    }

    .time-slot:hover:not(.unavailable) {
        background: #e9ecef;
        transform: translateY(-1px);
    }

    .time-slot.selected {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        border-color: #5a67d8;
    }

    .time-slot.unavailable {
        background: #ffebee;
        color: #e57373;
        cursor: not-allowed;
    }

    .summary {
        background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
        border-radius: 15px;
        padding: 20px;
        margin-bottom: 20px;
    }

    .summary-item {
        display: flex;
        justify-content: space-between;
        margin-bottom: 15px;
        padding-bottom: 15px;
        border-bottom: 1px solid #dee2e6;
    }

    .summary-item:last-child {
        margin-bottom: 0;
        border-bottom: none;
        padding-bottom: 0;
    }

    .summary-label {
        font-weight: 600;
        color: #495057;
    }

    .summary-value {
        color: #6c757d;
        font-weight: 500;
    }

    .btn {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        border: none;
        border-radius: 15px;
        padding: 18px 30px;
        color: white;
        font-size: 16px;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
        width: 100%;
        box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    }

    .btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    }

    .btn:disabled {
        background: #dee2e6;
        color: #6c757d;
        cursor: not-allowed;
        transform: none;
        box-shadow: none;
    }

    .btn-secondary {
        background: transparent;
        border: 2px solid #dee2e6;
        color: #6c757d;
        margin-right: 10px;
        width: auto;
        flex: 1;
    }

    .btn-secondary:hover {
        background: #f8f9fa;
        border-color: #adb5bd;
    }

    .btn-group {
        display: flex;
        gap: 10px;
        margin-top: 20px;
    }

    .progress-bar {
        height: 4px;
        background: #e9ecef;
        border-radius: 2px;
        margin-bottom: 30px;
        overflow: hidden;
    }

    .progress-fill {
        height: 100%;
        background: linear-gradient(90deg, #667eea, #764ba2);
        border-radius: 2px;
        transition: width 0.3s ease;
    }

    .month-nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 15px;
    }

    .month-nav button {
        background: none;
        border: none;
        font-size: 18px;
        cursor: pointer;
        color: #667eea;
        padding: 5px 10px;
        border-radius: 8px;
        transition: background 0.2s;
    }

    .month-nav button:hover {
        background: #f8f9fa;
    }

    .month-title {
        font-weight: 600;
        color: #2c3e50;
    }

    </style>