@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');
        
        :root {
            --neon: #ff006e;
            --neon-glow: 0 0 15px rgba(255, 0, 110, 0.5);
            --black: #111;
            --white: #fff;
            --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Poppins', sans-serif;
            background-color: #fafafa;
            color: var(--black);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 24px;
            background-image: 
                radial-gradient(circle at 10% 20%, rgba(255,0,110,0.03) 0%, transparent 50%),
                radial-gradient(circle at 90% 80%, rgba(255,0,110,0.03) 0%, transparent 50%);
        }
        
        .container {
            max-width: 480px;
            width: 100%;
            text-align: center;
            animation: fadeIn 0.8s ease-out;
        }
        
        h1 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 2.5rem;
            color: var(--black);
            position: relative;
            display: inline-block;
            background: linear-gradient(90deg, var(--black), var(--neon));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        
        h1::after {
            content: '';
            position: absolute;
            bottom: -12px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--neon);
            border-radius: 4px;
            box-shadow: var(--neon-glow);
        }
        
        .options {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 40px;
        }
        
        .option {
            position: relative;
            cursor: pointer;
        }
        
        .option input {
            position: absolute;
            opacity: 0;
        }
        
        .option-content {
            background: var(--white);
            border: 2px solid #e0e0e0;
            border-radius: 18px;
            padding: 24px;
            display: flex;
            align-items: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        
        .option-content::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border: 2px solid transparent;
            border-radius: 16px;
            transition: var(--transition);
            box-sizing: border-box;
        }
        
        .option:hover .option-content {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(0,0,0,0.1);
        }
        
        .option:hover .option-content::before {
            border-color: var(--neon);
            box-shadow: var(--neon-glow);
        }
        
        .option input:checked ~ .option-content {
            border-color: var(--neon);
            background: linear-gradient(to right, rgba(255,0,110,0.03), rgba(255,0,110,0.01));
            box-shadow: 0 8px 25px rgba(255,0,110,0.15);
        }
        
        .option input:checked ~ .option-content::before {
            border-color: var(--neon);
            box-shadow: var(--neon-glow);
        }
        
        .option-icon {
            width: 56px;
            height: 56px;
            margin-right: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            flex-shrink: 0;
        }
        
        .whatsapp-icon {
            background: var(--black);
            border-radius: 50%;
            padding: 14px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
        }
        
        .whatsapp-icon svg {
            width: 28px;
            height: 28px;
        }
        
        .calendar-icon {
            background: var(--white);
            border-radius: 50%;
            padding: 14px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
            border: 1px solid #eee;
        }
        
        .calendar-icon svg {
            width: 28px;
            height: 28px;
            stroke: var(--neon);
            stroke-width: 2;
        }
        
        .option-text {
            text-align: left;
            flex: 1;
        }
        
        .option-text h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--black);
        }
        
        .option-text p {
            font-size: 0.95rem;
            color: #666;
            font-weight: 400;
        }
        
        .submit-btn {
            margin-top: 40px;
            background: linear-gradient(135deg, var(--neon), #ff2d7f);
            color: var(--white);
            border: none;
            padding: 18px 45px;
            font-size: 1.1rem;
            font-weight: 600;
            border-radius: 14px;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 8px 25px rgba(255, 0, 110, 0.4);
            position: relative;
            overflow: hidden;
            width: 100%;
            max-width: 260px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .submit-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
            transition: 0.6s;
        }
        
        .submit-btn:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 12px 30px rgba(255, 0, 110, 0.5);
        }
        
        .submit-btn:hover::before {
            left: 100%;
        }
        
        .submit-btn:active {
            transform: translateY(1px);
        }
        
        .submit-btn:disabled {
            background: #ddd;
            color: #999;
            box-shadow: none;
            transform: none;
            cursor: not-allowed;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        @keyframes pulse {
            0% { transform: scale(1); box-shadow: 0 8px 25px rgba(255, 0, 110, 0.4); }
            50% { transform: scale(1.02); box-shadow: 0 10px 30px rgba(255, 0, 110, 0.6); }
            100% { transform: scale(1); box-shadow: 0 8px 25px rgba(255, 0, 110, 0.4); }
        }
        
        .pulse {
            animation: pulse 1.5s infinite;
        }
        
        /* Effet de halo néon */
        .neon-halo {
            position: relative;
            z-index: 1;
        }
        
        .neon-halo::after {
            content: '';
            position: absolute;
            top: -5px;
            left: -5px;
            right: -5px;
            bottom: -5px;
            border-radius: 22px;
            background: var(--neon);
            z-index: -1;
            opacity: 0;
            transition: var(--transition);
            filter: blur(10px);
        }
        
        .option:hover .neon-halo::after {
            opacity: 0.15;
        }
        
        .option input:checked ~ .option-content .neon-halo::after {
            opacity: 0.2;
        }