@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

:root {
    --primary-color: #ffd700;
    --primary-dark: #ffc800;
    --dark-bg: #1a1a1a;
    --darker-bg: #121212;
    --light-text: #f5f5f5;
    --gray-text: #a0a0a0;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: var(--darker-bg);
    color: var(--light-text);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 500px;
    margin: 0 auto;
    padding: 20px;
    background-color: var(--dark-bg);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

h1 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 30px;
    font-size: 1.8rem;
}

h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.4rem;
    text-align: center;
}

.payment-methods {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 30px;
}

.method {
    background-color: var(--darker-bg);
    border: 2px solid #333;
    border-radius: var(--border-radius);
    padding: 15px 10px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100px;
}

.method i {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--gray-text);
}

.method.active {
    border-color: var(--primary-color);
    background-color: rgba(255, 215, 0, 0.1);
}

.method.active i,
.method.active span {
    color: var(--primary-color);
}

.method:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.details {
    display: none;
    animation: fadeIn 0.5s ease;
}

.details.active {
    display: block;
}

.input-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--light-text);
    font-weight: 500;
}

input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #444;
    border-radius: var(--border-radius);
    background-color: #2a2a2a;
    color: var(--light-text);
    font-size: 1rem;
    transition: var(--transition);
}

input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(255, 215, 0, 0.2);
}

.btn {
    width: 100%;
    padding: 14px;
    background-color: var(--primary-color);
    color: #000;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 10px;
}

.btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 480px) {
    .payment-methods {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 15px;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    h2 {
        font-size: 1.2rem;
    }
}

/* Success Message Overlay */
.success-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.success-overlay.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.success-message {
    background-color: var(--dark-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    max-width: 400px;
    width: 100%;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.3);
    transform: translateY(20px);
    opacity: 0;
    animation: slideUp 0.5s ease forwards;
}

.success-icon {
    font-size: 4rem;
    color: #4CAF50;
    margin-bottom: 20px;
}

.success-message h2 {
    color: #4CAF50;
    margin-bottom: 15px;
    font-size: 1.8rem;
}

.success-message p {
    color: var(--light-text);
    margin-bottom: 25px;
    font-size: 1.1rem;
}

.success-message .btn {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 30px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 10px;
}

.success-message .btn:hover {
    background-color: #45a049;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}

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