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

:root {
    --primary-color: #6a5af9;
    --secondary-color: #f0f0f0;
    --background-color: #121212;
    --card-background: #1e1e1e;
    --text-color: #ffffff;
    --text-muted: #a0a0a0;
    --border-color: #2a2a2a;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
}

.checkout-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1200px;
    width: 100%;
    background-color: var(--card-background);
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.course-details {
    padding: 50px;
    background-color: #161616;
    border-right: 1px solid var(--border-color);
}

.course-details img {
    width: 100%;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.course-details h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 15px;
}

.course-details p {
    font-size: 16px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 30px;
}

.course-details ul {
    list-style: none;
    padding: 0;
}

.course-details ul li {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 16px;
    color: var(--text-color);
    margin-bottom: 15px;
    font-weight: 500;
}

.course-details ul li::before {
    content: '\f058';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    color: var(--primary-color);
    font-size: 18px;
}

.payment-details {
    padding: 50px;
}

.payment-details h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 30px;
}

.coupon-section {
    margin-bottom: 30px;
}

.coupon-section h5 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 10px;
}

.coupon-section p {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 15px;
}

.coupon-input-wrap {
    display: flex;
    gap: 10px;
}

.coupon-input-wrap input {
    flex: 1;
    padding: 14px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 14px;
    outline: none;
    background-color: #2a2a2a;
    color: var(--text-color);
    transition: border-color 0.3s;
}

.coupon-input-wrap input:focus {
    border-color: var(--primary-color);
}

.apply-coupon-btn {
    padding: 14px 25px;
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

.apply-coupon-btn:hover {
    background-color: #5a4af9;
    transform: translateY(-2px);
}

.coupon-msg {
    font-size: 13px;
    margin-top: 15px;
    font-weight: 500;
}

.coupon-msg.success {
    color: #2ecc71;
}

.coupon-msg.error {
    color: #ff4d4d;
}

.payment-methods {
    margin-top: 30px;
}

.payment-methods h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
}

.method-btn {
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 15px;
    display: flex;
    align-items: center;
    gap: 20px;
    cursor: pointer;
    transition: all 0.3s;
    background: transparent;
    margin-bottom: 15px;
}

.method-btn:hover {
    background-color: #2a2a2a;
}

.method-btn.active {
    border-color: var(--primary-color);
    background-color: rgba(106, 90, 249, 0.1);
}

.method-btn i {
    font-size: 28px;
    color: var(--primary-color);
}

.method-info h5 {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 5px 0;
    color: var(--text-color);
}

.method-info p {
    font-size: 14px;
    color: var(--text-muted);
    margin: 0;
}

#paypal-button-container {
    display: none;
    margin-top: 20px;
}

.pay-now-btn {
    width: 100%;
    padding: 18px;
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
}

.pay-now-btn:hover {
    background-color: #5a4af9;
    transform: translateY(-2px);
}

@media (max-width: 992px) {
    .checkout-container {
        grid-template-columns: 1fr;
    }
    .course-details {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
}

@media (max-width: 768px) {
    body {
        padding: 1rem;
    }
    .course-details, .payment-details {
        padding: 30px;
    }
}