/* ========================================
   Checkout Page Styles
   ======================================== */

.checkout-page {
    background: var(--color-gray-100);
}

.checkout-main {
    padding-top: 100px;
    padding-bottom: var(--space-4xl);
    min-height: 100vh;
}

.checkout-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.checkout-header h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-sm);
}

.checkout-header p {
    color: var(--color-gray-600);
    font-size: 1.0625rem;
}

/* Grid Layout */
.checkout-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--space-2xl);
    align-items: start;
}

@media (max-width: 1024px) {
    .checkout-grid {
        grid-template-columns: 1fr;
    }
    
    .order-summary {
        order: -1;
    }
}

/* Order Summary */
.order-summary {
    position: sticky;
    top: 100px;
}

.summary-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
}

.summary-card h2 {
    font-size: 1.25rem;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-gray-200);
}

.selected-package {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: rgba(0, 168, 168, 0.05);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-xl);
}

.package-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    color: var(--color-white);
}

.package-details h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-xs);
}

.package-details p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.package-includes {
    margin-bottom: var(--space-xl);
}

.package-includes h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-600);
    margin-bottom: var(--space-md);
}

.package-includes ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.package-includes li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--color-gray-700);
}

.package-includes li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-teal);
    border-radius: 50%;
    flex-shrink: 0;
}

.event-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-gray-200);
    border-bottom: 1px solid var(--color-gray-200);
    margin-bottom: var(--space-lg);
}

.detail-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9375rem;
    color: var(--color-gray-700);
}

.detail-item svg {
    color: var(--color-teal);
}

.price-breakdown {
    margin-bottom: var(--space-lg);
}

.price-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    font-size: 0.9375rem;
    color: var(--color-gray-600);
}

.price-row.total {
    padding-top: var(--space-md);
    margin-top: var(--space-sm);
    border-top: 2px solid var(--color-gray-200);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-navy);
}

.secure-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    color: var(--color-gray-600);
}

.secure-badge svg {
    color: var(--color-teal);
}

/* Checkout Form */
.checkout-form-container {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
}

.form-section {
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--color-gray-200);
}

.form-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.form-section .section-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    text-align: left;
}

.step-number {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: var(--color-white);
    font-size: 0.875rem;
    font-weight: 700;
    border-radius: var(--radius-full);
}

.form-section .section-header h2 {
    font-size: 1.25rem;
    margin: 0;
}

.section-desc {
    color: var(--color-gray-600);
    margin-bottom: var(--space-lg);
}

/* Form Elements */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

@media (max-width: 640px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: var(--space-sm);
}

.form-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-teal);
    box-shadow: 0 0 0 3px rgba(0, 168, 168, 0.1);
}

.form-group input.error {
    border-color: #ef4444;
}

.form-group input.valid {
    border-color: var(--color-teal);
}

.error-message {
    display: block;
    font-size: 0.8125rem;
    color: #ef4444;
    margin-top: var(--space-xs);
    min-height: 1.25rem;
}

/* Card Input */
.card-input-wrapper {
    position: relative;
}

.card-input-wrapper input {
    padding-right: 50px;
}

.card-type-icon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 20px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.card-type-icon.visa {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 48 30'%3E%3Crect fill='%231A1F71' width='48' height='30' rx='4'/%3E%3Ctext x='24' y='19' text-anchor='middle' fill='white' font-family='Arial' font-weight='bold' font-size='10'%3EVISA%3C/text%3E%3C/svg%3E");
}

.card-type-icon.mastercard {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 48 30'%3E%3Crect fill='%23f5f5f5' width='48' height='30' rx='4'/%3E%3Ccircle cx='18' cy='15' r='9' fill='%23EB001B'/%3E%3Ccircle cx='30' cy='15' r='9' fill='%23F79E1B'/%3E%3C/svg%3E");
}

.card-type-icon.amex {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 48 30'%3E%3Crect fill='%23006FCF' width='48' height='30' rx='4'/%3E%3Ctext x='24' y='18' text-anchor='middle' fill='white' font-family='Arial' font-weight='bold' font-size='8'%3EAMEX%3C/text%3E%3C/svg%3E");
}

.card-brands {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.card-brand {
    width: 40px;
    height: 26px;
    border-radius: var(--radius-sm);
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

.card-brand.active {
    opacity: 1;
}

/* CVV */
.cvv-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.cvv-wrapper input {
    padding-right: 40px;
}

.cvv-help {
    position: absolute;
    right: 12px;
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.cvv-help:hover {
    color: var(--color-teal);
}

/* Checkbox Cards */
.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--space-md);
}

.checkbox-card {
    cursor: pointer;
}

.checkbox-card input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.checkbox-content {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.checkbox-card:hover .checkbox-content {
    border-color: var(--color-teal);
}

.checkbox-card input:checked + .checkbox-content {
    border-color: var(--color-teal);
    background: rgba(0, 168, 168, 0.05);
}

.checkbox-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    color: var(--color-gray-500);
    transition: all var(--transition-fast);
}

.checkbox-card input:checked + .checkbox-content .checkbox-icon {
    background: var(--color-teal);
    color: var(--color-white);
}

.checkbox-text {
    display: flex;
    flex-direction: column;
}

.checkbox-text strong {
    font-size: 0.9375rem;
    color: var(--color-navy);
    margin-bottom: var(--space-xs);
}

.checkbox-text small {
    font-size: 0.8125rem;
    color: var(--color-gray-500);
}

/* Inline Checkbox */
.checkbox-inline {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    font-size: 0.9375rem;
    color: var(--color-gray-700);
}

.checkbox-inline input {
    width: 18px;
    height: 18px;
    accent-color: var(--color-teal);
}

.checkbox-inline a {
    color: var(--color-teal);
    text-decoration: underline;
}

.terms-checkbox {
    margin-bottom: var(--space-xl);
}

/* Billing Address */
.billing-address {
    padding-top: var(--space-md);
}

/* Submit Section */
.form-submit-section {
    border-bottom: none;
    padding-bottom: 0;
}

.submit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.btn-text {
    font-weight: 600;
}

.btn-price {
    padding: 0.25rem 0.75rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.submit-btn.processing .btn-text::after {
    content: '...';
    animation: dots 1.5s infinite;
}

@keyframes dots {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60%, 100% { content: '...'; }
}

.payment-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-size: 0.8125rem;
    color: var(--color-gray-500);
}

.payment-note svg {
    color: var(--color-teal);
}

/* Processing Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(26, 39, 68, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl);
    text-align: center;
    max-width: 400px;
    width: 90%;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.processing-modal h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.processing-modal p {
    color: var(--color-gray-600);
    font-size: 0.9375rem;
}

.processing-spinner {
    width: 64px;
    height: 64px;
    border: 4px solid var(--color-gray-200);
    border-top-color: var(--color-teal);
    border-radius: 50%;
    margin: 0 auto var(--space-xl);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Nav Back */
.nav-back {
    display: flex;
    align-items: center;
}

.nav-back .btn svg {
    transition: transform var(--transition-fast);
}

.nav-back .btn:hover svg {
    transform: translateX(-4px);
}