/* ============================================================
   Laytik premium layer
   Small post-legacy polish pass. Keep rules broad and token-based.
   ============================================================ */

:root { color-scheme: light; }

html {
    background: var(--surface-bg);
    text-rendering: optimizeLegibility;
}

body {
    background: linear-gradient(180deg, var(--surface-page), var(--surface-bg));
    color: var(--text-primary);
    letter-spacing: 0;
}

body,
button,
input,
select,
textarea {
    font-family: var(--font-family-sans);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    letter-spacing: 0;
}

a { text-underline-offset: 0.18em; }

main.app-shell__main { padding-block: var(--space-3); }

.u-container {
    width: min(100% - calc(var(--gutter) * 2), var(--content-max-width));
    margin-inline: auto;
}

.app-header,
.bottom-nav {
    background: color-mix(in oklch, var(--surface-elevated) 96%, transparent);
    border-color: var(--border-subtle);
}

.app-header {
    box-shadow: 0 1px 0 color-mix(in oklch, var(--border-subtle) 72%, transparent);
}

.bottom-nav {
    box-shadow: 0 -12px 28px color-mix(in oklch, var(--color-gray-900) 8%, transparent);
}

.bottom-nav__item[aria-current="page"],
.bottom-nav__item.is-active {
    color: var(--color-accent-strong);
}

.bottom-nav__item[aria-current="page"] .bottom-nav__icon,
.bottom-nav__item.is-active .bottom-nav__icon {
    background: var(--color-accent-soft);
    border-radius: var(--radius-md);
}

/* Shared controls */
.btn,
.pill-btn,
.button,
.btn-calculate,
.msb-btn,
button,
input[type="button"],
input[type="submit"],
input[type="reset"] {
    min-height: var(--touch-target);
    border-radius: var(--radius-md) !important;
    letter-spacing: 0;
    box-shadow: none !important;
}

.pill-btn,
.button,
.btn-calculate,
.msb-btn,
.btn--primary,
button[type="submit"] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    background: var(--color-accent) !important;
    border: 1px solid var(--color-accent) !important;
    color: var(--color-on-accent) !important;
    text-decoration: none !important;
    transform: none !important;
}

.pill-btn.secondary,
.pill-btn-secondary,
.msb-btn-secondary,
.btn--secondary,
.btn--ghost,
.secondary-button {
    background: var(--surface-card) !important;
    border-color: var(--border-default) !important;
    color: var(--text-primary) !important;
}

.pill-btn:hover,
.button:hover,
.btn-calculate:hover,
.msb-btn:hover,
.btn--primary:hover,
button[type="submit"]:hover {
    background: var(--color-accent-strong) !important;
    border-color: var(--color-accent-strong) !important;
    color: var(--color-on-accent) !important;
}

input,
select,
textarea,
.input,
.select,
.textarea,
.form-control,
.form-input {
    min-height: var(--touch-target);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    background: var(--surface-elevated);
    color: var(--text-primary);
    font-size: max(16px, var(--font-size-base));
    box-shadow: none;
}

input:focus,
select:focus,
textarea:focus,
.input:focus-visible,
.select:focus-visible,
.textarea:focus-visible,
.form-control:focus,
.form-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: var(--shadow-focus);
}

/* Surfaces */
.card,
.product-card,
.premium-product-card,
.product-info-card,
.field-container,
.step2-preview,
.cart-item-card,
.cart-summary-card,
.summary-card,
.address-card,
.order-summary-card,
.summary-item-card,
.payment-card,
.payment-method-card,
.price-summary-card,
.settings-card,
.admin-card,
.dashboard-card,
.assistant-context-banner,
.assistant-carryover-banner,
.premium-fomo-notice,
.editing-banner,
.error-banner,
.checkout-coupon-panel,
.ai-chat-bubble,
.ai-chat-composer,
.ai-chat-thread,
.ai-summary-panel,
.ai-pix-payment-card {
    background: var(--surface-card) !important;
    border: 1px solid var(--border-subtle) !important;
    border-radius: var(--radius-md) !important;
    box-shadow: var(--shadow-xs) !important;
}

.product-card,
.cart-item-card,
.admin-page .card,
.assistant-settings-page .card {
    padding: var(--space-5) !important;
    opacity: 1 !important;
    animation: none !important;
}

.product-card::before { display: none !important; }

.product-card:hover,
.cart-item-card:hover,
.payment-method-card:hover {
    transform: none !important;
    border-color: var(--border-default) !important;
    box-shadow: var(--shadow-sm) !important;
}

.product-price,
.selected-options-box,
.item-options,
.summary-options,
.price-summary,
.premium-fomo-notice,
.assistant-context-banner,
.assistant-carryover-banner {
    background: var(--surface-muted) !important;
    border-left-width: 1px !important;
}

.badge,
.status-badge,
.pill,
.chip,
.premium-badge,
.suggested-badge,
.product-type-badge,
.assistant-carryover-chip,
.payment-method-badge {
    border-radius: var(--radius-pill);
    letter-spacing: 0;
}

.price-value,
.preview-total-value,
.msb-value,
.summary-row.total span:last-child,
.summary-total-row.final,
.price-summary-row.total,
.item-price,
.summary-item-price {
    color: var(--color-accent-strong) !important;
}

/* Page rhythm */
.premium-section,
.product-selection-container,
.config-page-container,
.cart-page-container,
.shipping-page-container,
.payment-page-container,
.admin-page {
    display: grid;
    gap: var(--space-5);
}

.page-header,
.page-header-config,
.page-header-shipping,
.page-header-payment,
.cart-header,
.premium-section-header {
    display: grid;
    gap: var(--space-2);
    margin: 0 0 var(--space-3) !important;
    text-align: left !important;
}

.page-header h1,
.page-header-config h1,
.page-header-shipping h1,
.page-header-payment h1,
.cart-header h1,
.premium-section-header h2 {
    margin: 0 !important;
    color: var(--text-primary) !important;
    font-size: var(--font-size-3xl) !important;
    font-weight: var(--font-weight-semibold) !important;
    line-height: var(--line-height-tight);
}

.page-header p,
.page-header-config p,
.page-header-shipping p,
.page-header-payment p,
.cart-header p,
.premium-section-header p {
    max-width: var(--container-prose);
    margin: 0 !important;
    color: var(--text-secondary) !important;
}

.premium-product-grid,
.product-type-grid,
.payment-methods-grid,
.grid-two {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

/* Checkout stepper */
.stepper {
    min-height: auto !important;
    margin: var(--space-4) 0 !important;
    padding: var(--space-3) !important;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    background: var(--surface-card);
    gap: var(--space-2);
}

.stepper::before { display: none !important; }

.step-index {
    width: 36px !important;
    height: 36px !important;
    border-width: 1px !important;
    border-color: var(--border-default) !important;
    background: var(--surface-muted) !important;
    color: var(--text-muted) !important;
    box-shadow: none !important;
    transform: none !important;
}

.step-pill.active .step-index {
    background: var(--color-accent) !important;
    border-color: var(--color-accent) !important;
    color: var(--color-on-accent) !important;
}

.step-pill.done .step-index {
    background: var(--color-accent-soft) !important;
    color: var(--color-accent-strong) !important;
}

/* Assistant */
#ai-fab {
    background: var(--color-accent-strong) !important;
    color: var(--color-on-accent) !important;
    box-shadow: 0 14px 38px color-mix(in oklch, var(--color-accent-strong) 28%, transparent) !important;
}

.ai-modal-shell {
    background: var(--surface-page) !important;
    border: 1px solid var(--border-subtle) !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-xl) !important;
}

.ai-modal-rail {
    background: var(--color-gray-900) !important;
    color: var(--text-inverse) !important;
}

.ai-chat-message-user .ai-chat-bubble {
    background: var(--color-accent) !important;
    border-color: var(--color-accent) !important;
    color: var(--color-on-accent) !important;
}

.ai-chat-input,
.ai-textarea,
.ai-pix-copy-code {
    border-radius: var(--radius-md) !important;
    border-color: var(--border-default) !important;
    background: var(--surface-elevated) !important;
    color: var(--text-primary) !important;
    transform: none !important;
}

.ai-chat-send {
    width: 54px !important;
    min-width: 54px;
    height: 54px !important;
    border-radius: var(--radius-md) !important;
    background: var(--color-accent) !important;
}

.ai-chat-chip,
.ai-example-chip,
.ai-clarification-chip,
.quantity-btn,
.cart-quantity-btn,
.ai-qty-btn {
    min-height: var(--touch-target);
    border: 1px solid var(--border-default) !important;
    border-radius: var(--radius-md) !important;
    background: var(--surface-card) !important;
    color: var(--text-primary) !important;
    box-shadow: none !important;
    transform: none !important;
}

/* Admin */
.admin-page .page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-4);
}

.admin-page label,
.assistant-settings-page label {
    display: grid;
    gap: var(--space-2);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.admin-page .muted,
.assistant-settings-page .muted {
    color: var(--text-muted) !important;
}

.notice {
    border-color: var(--border-default) !important;
}

.notice p {
    margin: 0;
    font-weight: var(--font-weight-semibold);
}

.notice--success {
    background: var(--color-success-50) !important;
    color: var(--color-success-700);
}

.notice--error {
    background: var(--color-danger-50) !important;
    color: var(--color-danger-700);
}

.payment-settings-form,
.payment-provider-card,
.payment-method-note {
    display: grid;
    gap: var(--space-4);
}

.payment-provider-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-4);
}

.payment-provider-card__header h2,
.payment-method-note h2 {
    margin: 0 !important;
    font-size: var(--font-size-xl);
}

.payment-provider-card__toggle {
    min-width: max-content;
}

.payment-credentials-grid,
.payment-fees-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

.payment-credential-group {
    display: grid;
    gap: var(--space-3);
    min-width: 0;
    margin: 0;
    padding: var(--space-4);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
}

.payment-credential-group legend {
    padding-inline: var(--space-2);
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
}

.payment-provider-card__meta,
.payment-method-note p {
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.payment-settings-actions {
    justify-content: flex-start;
}

@media (max-width: 720px) {
    .u-container {
        width: min(100% - calc(var(--space-3) * 2), var(--content-max-width));
    }

    .page-header h1,
    .page-header-config h1,
    .page-header-shipping h1,
    .page-header-payment h1,
    .cart-header h1,
    .premium-section-header h2 {
        font-size: var(--font-size-2xl) !important;
    }

    .stepper {
        overflow-x: auto !important;
        justify-content: flex-start !important;
    }

    .step-pill {
        flex: 0 0 86px !important;
    }

    .pill-btn,
    .cart-actions .pill-btn,
    .item-actions .pill-btn,
    .actions .pill-btn {
        width: 100%;
    }

    .product-card,
    .cart-item-card,
    .admin-page .card,
    .assistant-settings-page .card {
        padding: var(--space-4) !important;
    }

    .admin-page .page-header {
        display: grid;
    }

    .ai-step-grid {
        grid-template-columns: 1fr !important;
    }

    .ai-chat-thread {
        max-height: min(58dvh, 560px) !important;
    }
}

@media (min-width: 720px) {
    .premium-product-grid,
    .product-type-grid,
    .payment-methods-grid,
    .grid-two {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .payment-credentials-grid,
    .payment-fees-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 1120px) {
    .premium-product-grid,
    .product-type-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 1ms !important;
    }
}