:root {
            --primary-pink: #fbebf1;
            --soft-pink: #f4c2c2;
            --deep-pink: #e88ea7;
            --gold-gradient: linear-gradient(135deg, #d4af37 0%, #f3e5ab 50%, #aa7c11 100%);
            --gold-border: #d4af37;
            --text-dark: #333333;
            --text-light: #777777;
            --white: #ffffff;
            --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.05);
            --shadow-gold: 0 4px 15px rgba(212, 175, 55, 0.2);
            --radius-oval: 50px;
            --radius-card: 20px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Montserrat', sans-serif;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            background-color: #fcf9f9;
            background-image: 
                radial-gradient(circle at 10% 20%, rgba(248, 230, 236, 0.5) 0%, transparent 40%),
                radial-gradient(circle at 90% 80%, rgba(244, 194, 194, 0.3) 0%, transparent 40%);
            color: var(--text-dark);
            padding: 20px 10px;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
        }

        /* Marble Background Card Container */
        .app-container {
            max-width: 650px;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="400" height="400" viewBox="0 0 100 100"><path d="M10,30 Q30,5 50,30 T90,30" fill="none" stroke="rgba(212, 175, 55, 0.05)" stroke-width="0.5"/><path d="M20,70 Q40,40 70,70 T90,90" fill="none" stroke="rgba(232, 142, 167, 0.08)" stroke-width="0.8"/></svg>');
            border-radius: var(--radius-card);
            border: 2px solid transparent;
            border-image: var(--gold-gradient) 1;
            box-shadow: var(--shadow-soft);
            padding: 30px 20px;
            position: relative;
            overflow: hidden;
        }

        /* Gold Border Outline Accent */
        .app-container::before {
            content: '';
            position: absolute;
            top: 4px; left: 4px; right: 4px; bottom: 4px;
            border: 1px solid rgba(212, 175, 55, 0.3);
            border-radius: calc(var(--radius-card) - 4px);
            pointer-events: none;
        }

        /* Header */
        header {
            text-align: center;
            margin-bottom: 30px;
            position: relative;
        }

        header h1 {
            font-family: 'Cormorant Garamond', serif;
            font-size: 2.3rem;
            color: #4a3b32;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 5px;
        }

        .flower-badge {
            font-size: 1.2rem;
            display: inline-block;
            margin-top: 5px;
            padding: 5px 15px;
            background: var(--primary-pink);
            border-radius: 20px;
            color: #7d5260;
            font-weight: 500;
            font-size: 0.85rem;
            border: 1px solid rgba(212, 175, 55, 0.4);
        }

        /* Section Titles */
        .section-title {
            font-family: 'Cormorant Garamond', serif;
            font-size: 1.5rem;
            color: #4a3b32;
            margin: 25px 0 15px 0;
            display: flex;
            align-items: center;
            gap: 10px;
            border-bottom: 1px solid rgba(212, 175, 55, 0.3);
            padding-bottom: 5px;
        }

        .section-title i {
            color: var(--deep-pink);
            font-size: 1.1rem;
        }

        /* Oval Interactive Bars */
        .oval-bar-group {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .oval-option {
            background: var(--white);
            border: 1px solid #f0d0db;
            border-radius: var(--radius-oval);
            padding: 12px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: all 0.25s ease;
            box-shadow: 0 2px 8px rgba(0,0,0,0.02);
            position: relative;
        }

        .oval-option:hover {
            border-color: var(--gold-border);
            transform: translateY(-1px);
        }

        .oval-option.active {
            background: linear-gradient(135deg, #fff 0%, var(--primary-pink) 100%);
            border-color: var(--gold-border);
            box-shadow: var(--shadow-gold);
        }

        .oval-option.active::after {
            content: '✓';
            position: absolute;
            right: 15px;
            color: var(--gold-border);
            font-weight: bold;
        }

        .option-label {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.95rem;
            font-weight: 500;
        }

        .option-icon {
            font-size: 1.2rem;
            width: 28px;
            text-align: center;
        }

        .option-price {
            font-weight: 600;
            color: #8c5b68;
            margin-right: 15px;
        }

        /* Sub-selection for Acrylic Length */
        .length-selector {
            display: none;
            grid-template-columns: repeat(4, 1fr);
            gap: 8px;
            margin-top: 10px;
            padding: 10px;
            background: rgba(251, 235, 241, 0.4);
            border-radius: 15px;
        }

        .length-selector.show {
            display: grid;
        }

        .length-btn {
            background: white;
            border: 1px solid #ebd0d9;
            border-radius: 12px;
            padding: 8px 5px;
            text-align: center;
            font-size: 0.8rem;
            cursor: pointer;
            transition: all 0.2s;
        }

        .length-btn.active {
            background: var(--deep-pink);
            color: white;
            border-color: var(--deep-pink);
            font-weight: 600;
        }

        /* Nail Tips Section */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 10px;
            margin-top: 10px;
        }

        .tip-card {
            background: white;
            border: 1px solid #f0d0db;
            border-radius: 15px;
            padding: 12px 5px;
            text-align: center;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .tip-card svg {
            width: 30px;
            height: 50px;
            stroke: #666;
            fill: none;
            stroke-width: 2;
            transition: all 0.2s;
        }

        .tip-card.active {
            border-color: var(--gold-border);
            background: var(--primary-pink);
            box-shadow: 0 3px 10px rgba(212, 175, 55, 0.15);
        }

        .tip-card.active svg {
            stroke: var(--deep-pink);
            fill: rgba(232, 142, 167, 0.1);
        }

        .tip-name {
            font-size: 0.75rem;
            margin-top: 5px;
            font-weight: 500;
        }

        /* Counter Elements (Decorations/Extras) */
        .decorations-grid {
            display: flex;
            flex-direction: column;
            gap: 8px;
            max-height: 280px;
            overflow-y: auto;
            padding-right: 5px;
        }

        /* Scrollbar Styling */
        .decorations-grid::-webkit-scrollbar {
            width: 4px;
        }
        .decorations-grid::-webkit-scrollbar-thumb {
            background: var(--soft-pink);
            border-radius: 4px;
        }

        .counter-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: white;
            padding: 8px 15px;
            border-radius: var(--radius-oval);
            border: 1px solid #f0f0f0;
        }

        .counter-controls {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-counter {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            border: 1px solid var(--gold-border);
            background: white;
            color: var(--text-dark);
            font-weight: bold;
            cursor: pointer;
            display: flex;
            justify-content: center;
            align-items: center;
            transition: all 0.2s;
        }

        .btn-counter:hover {
            background: var(--primary-pink);
        }

        .counter-value {
            font-size: 0.85rem;
            font-weight: 600;
            width: 18px;
            text-align: center;
        }

        /* Form Controls & Inputs */
        .input-group {
            margin-bottom: 15px;
        }

        .input-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 5px;
            color: #555;
        }

        .input-control {
            width: 100%;
            padding: 12px 18px;
            border-radius: var(--radius-oval);
            border: 1px solid #ebd0d9;
            outline: none;
            font-size: 0.9rem;
            background: white;
            transition: all 0.2s;
        }

        .input-control:focus {
            border-color: var(--gold-border);
            box-shadow: 0 0 5px rgba(212, 175, 55, 0.3);
        }

        /* Calendar & Slots */
        .time-slots {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            margin-top: 10px;
        }

        .time-btn {
            padding: 10px;
            border: 1px solid #ebd0d9;
            border-radius: var(--radius-oval);
            background: white;
            text-align: center;
            font-size: 0.85rem;
            cursor: pointer;
            transition: all 0.2s;
        }

        .time-btn.active {
            background: var(--gold-gradient);
            color: white;
            border-color: transparent;
            font-weight: 600;
        }

        .time-btn.disabled {
            background: #f0f0f0;
            color: #aaa;
            border-color: #e0e0e0;
            cursor: not-allowed;
            text-decoration: line-through;
        }

        /* Total Price Box */
        .total-box {
            background: linear-gradient(135deg, #fff 0%, var(--primary-pink) 100%);
            border: 1px solid var(--gold-border);
            border-radius: var(--radius-card);
            padding: 15px;
            text-align: center;
            margin: 25px 0 15px 0;
            box-shadow: var(--shadow-gold);
        }

        .total-box span {
            font-size: 0.85rem;
            color: #666;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .total-price {
            font-size: 2rem;
            font-weight: 700;
            color: #4a3b32;
            font-family: 'Cormorant Garamond', serif;
        }

        /* Navigation & Actions */
        .actions-group {
            display: flex;
            gap: 10px;
            margin-bottom: 15px;
        }

        .btn-secondary {
            flex: 1;
            padding: 12px;
            border-radius: var(--radius-oval);
            border: 1px solid #ddd;
            background: white;
            color: #666;
            font-size: 0.8rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 5px;
            transition: all 0.2s;
        }

        .btn-secondary:hover {
            background: #f8f8f8;
            border-color: #bbb;
        }

        .btn-whatsapp {
            width: 100%;
            padding: 16px;
            border-radius: var(--radius-oval);
            border: none;
            background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
            color: white;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
            transition: all 0.25s ease;
        }

        .btn-whatsapp:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
        }

        /* Summary Confirmation Modal */
        .summary-card {
            background: #fff;
            border: 1px dashed var(--gold-border);
            border-radius: 15px;
            padding: 15px;
            margin-top: 15px;
            font-size: 0.85rem;
            display: none;
        }

        .summary-card.show {
            display: block;
        }

        .summary-card h4 {
            color: var(--deep-pink);
            margin-bottom: 8px;
            font-family: 'Cormorant Garamond', serif;
            font-size: 1.1rem;
        }

        .summary-item {
            display: flex;
            justify-content: space-between;
            margin-bottom: 4px;
            color: #555;
        }

        /* Responsive Adjustments */
        @media (max-width: 480px) {
            .app-container {
                padding: 20px 15px;
            }
            header h1 {
                font-size: 1.9rem;
            }
            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* Loading Screen */
        .global-loader {
            position: fixed;
            top: 0; left: 0; width: 100%; height: 100%;
            background-color: #fffafb;
            z-index: 99999;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            transition: opacity 0.5s ease-out;
        }

        .spinning-flower {
            width: 100px;
            height: 100px;
            animation: spin-flower 3s linear infinite;
        }

        @keyframes spin-flower {
            0% { transform: rotate(0deg) scale(1); }
            50% { transform: rotate(180deg) scale(1.1); }
            100% { transform: rotate(360deg) scale(1); }
        }