/* ========================================
   CHECKOUT PAGE STYLES
   Dark Theme with Orange Accents
   ======================================== */

body {
    padding-top: var(--header-height);
    padding-bottom: 0;
}

/* Header Modifications */
.main-header .nav-container {
    justify-content: space-between;
}

.checkout-steps {
    display: flex;
    align-items: center;
    gap: 12px;
}

.checkout-steps .step {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: 8px 16px;
    border-radius: 20px;
    background: var(--bg-tertiary);
    transition: all 0.2s ease;
}

.checkout-steps .step.active {
    color: var(--bg-primary);
    background: var(--accent-primary);
    font-weight: 600;
}

.checkout-steps .step.completed {
    color: var(--accent-primary);
    background: rgba(255, 109, 0, 0.15);
}

.checkout-steps .step-divider {
    width: 30px;
    height: 2px;
    background: var(--border-color);
}

.back-to-cart {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.back-to-cart:hover {
    color: var(--accent-primary);
}

/* Main Layout */
.checkout-main {
    min-height: calc(100vh - var(--header-height) - 60px);
    padding: 40px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

/* Empty Cart State */
.empty-cart-state {
    text-align: center;
    padding: 80px 20px;
}

.empty-cart-state svg {
    color: var(--text-muted);
    margin-bottom: 24px;
}

.empty-cart-state h2 {
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.empty-cart-state p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* Checkout Form Layout */
.checkout-form {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 40px;
    align-items: start;
}

/* Checkout Sections */
.checkout-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.section-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-radius: 50%;
    font-size: 0.85rem;
    font-weight: 700;
}

/* Form Styles */
.form-row {
    margin-bottom: 16px;
}

.form-row:last-child {
    margin-bottom: 0;
}

.form-row.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group label .required {
    color: var(--accent-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 14px;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(255, 109, 0, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group select {
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12' fill='%23666'%3E%3Cpath d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
    cursor: pointer;
}

/* Shipping Methods */
.shipping-methods {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.loading-shipping {
    text-align: center;
    color: var(--text-muted);
    padding: 20px;
}

.shipping-option {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.shipping-option:hover {
    border-color: var(--text-muted);
}

.shipping-option.selected {
    border-color: var(--accent-primary);
    background: rgba(255, 109, 0, 0.05);
}

.shipping-option input[type="radio"] {
    width: 20px;
    height: 20px;
    accent-color: var(--accent-primary);
    cursor: pointer;
}

.shipping-option-info {
    flex: 1;
}

.shipping-option-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.shipping-option-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.shipping-option-price {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.shipping-option-price.free {
    color: #22c55e;
}

/* Order Summary */
.order-summary {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    position: sticky;
    top: calc(var(--header-height) + 20px);
}

.summary-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

/* Summary Items */
.summary-items {
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 20px;
    padding-right: 8px;
}

.summary-item {
    display: flex;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.summary-item:last-child {
    border-bottom: none;
}

.summary-item-image {
    width: 60px;
    height: 60px;
    object-fit: contain;
    background: #fff;
    border-radius: 8px;
    padding: 4px;
}

.summary-item-info {
    flex: 1;
    min-width: 0;
}

.summary-item-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.summary-item-qty {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.summary-item-price {
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

/* Promo Code */
.promo-section {
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.promo-input-group {
    display: flex;
    gap: 8px;
}

.promo-input-group input {
    flex: 1;
    padding: 10px 12px;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    outline: none;
}

.promo-input-group input:focus {
    border-color: var(--accent-primary);
}

.promo-message {
    font-size: 0.85rem;
    margin-top: 8px;
}

.promo-message.success {
    color: #22c55e;
}

.promo-message.error {
    color: #ef4444;
}

/* Totals */
.summary-totals {
    margin-bottom: 20px;
}

.total-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.total-row.discount-row span:last-child {
    color: #22c55e;
}

.total-row.total-final {
    padding-top: 16px;
    margin-top: 8px;
    border-top: 2px solid var(--border-color);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    border: none;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1rem;
}

.btn-primary {
    color: var(--bg-primary);
    background: var(--accent-primary);
}

.btn-primary:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 109, 0, 0.4);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-outline {
    color: var(--text-primary);
    background: transparent;
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.btn-place-order {
    width: 100%;
}

.btn-place-order .spinner {
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

.secure-checkout {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Order Success */
.order-success {
    text-align: center;
    padding: 60px 20px;
    max-width: 500px;
    margin: 0 auto;
}

.success-icon {
    margin-bottom: 24px;
}

.success-icon svg {
    color: #22c55e;
}

.order-success h1 {
    font-size: 2rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.order-number {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--accent-primary);
    margin-bottom: 16px;
}

.success-message {
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.6;
}

.success-details {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 32px;
}

.success-details .detail-row {
    display: flex;
    justify-content: space-between;
    font-size: 1rem;
}

.success-details .detail-row span:last-child {
    font-weight: 700;
    color: var(--text-primary);
}

.success-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Footer */
.checkout-footer {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
}

/* Responsive */
@media (max-width: 900px) {
    .checkout-form {
        grid-template-columns: 1fr;
    }

    .order-summary {
        position: static;
    }

    .checkout-steps {
        display: none;
    }
}

@media (max-width: 600px) {
    .checkout-main {
        padding: 20px 16px;
    }

    .form-row.two-col {
        grid-template-columns: 1fr;
    }

    .checkout-section {
        padding: 20px 16px;
    }

    .success-actions {
        flex-direction: column;
    }

    .success-actions .btn {
        width: 100%;
    }
}