:root {
            --primary-color: #2563eb; /* Azul moderno */
            --primary-dark: #1e40af;
            --accent-color: #f59e0b; /* Ámbar para resaltar */
            --text-dark: #1f2937;
            --text-gray: #6b7280;
            --bg-light: #f3f4f6;
            --success-color: #10b981;
        }

        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.6;
        }

        /* ================= HERO SECTION ================= */
        .pro-hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
            color: white;
            padding: 80px 20px 120px; /* Padding inferior extra para el efecto de superposición */
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        /* Patrón de fondo opcional */
        .pro-hero::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
        }

        .pro-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 1rem;
            letter-spacing: -0.025em;
        }

        .pro-hero p {
            font-size: 1.25rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto;
        }

        /* ================= MAIN CONTAINER & CARD ================= */
        .main-wrapper {
            max-width: 1100px;
            margin: -80px auto 50px; /* Margen negativo para subir sobre el hero */
            padding: 0 20px;
            position: relative;
            z-index: 10;
        }

        .donation-card {
            background: white;
            border-radius: 20px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
            overflow: hidden;
            display: flex;
            flex-wrap: wrap;
        }

        .donation-form-col {
            flex: 3;
            min-width: 350px;
            padding: 40px;
            border-right: 1px solid #f0f0f0;
        }

        .donation-info-col {
            flex: 2;
            min-width: 300px;
            background-color: #f8fafc;
            padding: 40px;
        }

        /* ================= TABS PRO ================= */
        .tabs-pro {
            display: flex;
            background: #f1f5f9;
            padding: 5px;
            border-radius: 12px;
            margin-bottom: 2rem;
        }

        .tab-btn-pro {
            flex: 1;
            border: none;
            background: transparent;
            padding: 12px;
            border-radius: 8px;
            font-weight: 600;
            color: var(--text-gray);
            cursor: pointer;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .tab-btn-pro.active {
            background: white;
            color: var(--primary-color);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        }

        /* ================= AMOUNT GRID ================= */
        .amount-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
            gap: 12px;
            margin-bottom: 1.5rem;
        }

        .amount-radio {
            position: relative;
        }

        .amount-radio input {
            position: absolute;
            opacity: 0;
            cursor: pointer;
        }

        /* Usamos label como botón para mejor control del estilo */
        .amount-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 15px 10px;
            background: white;
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            cursor: pointer;
            transition: all 0.2s;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-dark);
        }

        /* Estado activo de los botones de monto controlados por JS (clase .active) */
        .amount-btn.active, 
        .paypal-amount.active {
             border-color: var(--primary-color);
             background-color: #eff6ff;
             color: var(--primary-color);
             box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
        }

        /* ================= FORMS ================= */
        .form-label {
            display: block;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .input-with-icon {
            position: relative;
        }
        .input-with-icon i {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: #9ca3af;
        }
        .input-with-icon input {
            padding-left: 45px !important;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            transition: border-color 0.2s;
            font-family: inherit;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
        }

        /* Stripe Element Container */
        .StripeElement {
            padding: 14px 16px;
            background: white;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
        }
        .StripeElement--focus {
            border-color: var(--primary-color);
        }

        /* ================= BUTTONS & BADGES ================= */
        .btn-pro-donate {
            width: 100%;
            padding: 16px;
            background: var(--primary-color);
            color: white;
            border: none;
            border-radius: 12px;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
        }

        .btn-pro-donate:hover {
            background: var(--primary-dark);
        }

        .security-badge {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 15px;
            color: var(--text-gray);
            font-size: 0.85rem;
        }

        /* ================= INFO COLUMN ================= */
        .impact-list {
            list-style: none;
            padding: 0;
            margin: 2rem 0;
        }
        .impact-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            margin-bottom: 20px;
        }
        .impact-icon {
            background: #dbeafe;
            color: var(--primary-color);
            width: 40px; height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .impact-text h4 {
            margin: 0 0 5px 0;
            font-weight: 600;
        }
        .impact-text p {
            margin: 0;
            font-size: 0.9rem;
            color: var(--text-gray);
        }

        /* Utilidades */
        .hidden { display: none !important; }
        .tab-content { display: none; animation: fadeIn 0.3s ease; }
        .tab-content.active { display: block; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }
        .spinner { border: 3px solid rgba(255,255,255,.3); border-radius: 50%; border-top-color: #fff; width: 20px; height: 20px; animation: spin 1s linear infinite; }
        @keyframes spin { to { transform: rotate(360deg); } }

        /* Responsive */
        @media (max-width: 768px) {
            .pro-hero h1 { font-size: 2rem; }
            .donation-form-col, .donation-info-col { flex: 100%; padding: 30px 20px; }
            .main-wrapper { margin-top: -40px; }
        }