/* ============================================================
   SmartChoice – Design tokens (Light / Dark) + smooth motion
   ============================================================ */
:root {
    --bg-page: #f0f4f8;
    --bg-surface: #ffffff;
    --bg-surface-muted: #f8fafc;
    --bg-surface-elevated: #ffffff;
    --bg-input: #ffffff;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border-color: #e5e7eb;
    --border-strong: #d1d5db;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-ai: #7c3aed;
    --accent-ai-soft: #f5f3ff;
    --success-bg: #ecfdf5;
    --success-text: #065f46;
    --error-text: #b91c1c;
    --ww-green: #008a00;
    --coles-red: #e01a22;
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.3s var(--ease-smooth);
}

[data-theme="dark"] {
    --bg-page: #0c1017;
    --bg-surface: #151b26;
    --bg-surface-muted: #1a2230;
    --bg-surface-elevated: #1e2736;
    --bg-input: #1a2230;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #2d3a4f;
    --border-strong: #3d4f6a;
    --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.45);
    --accent: #60a5fa;
    --accent-hover: #93c5fd;
    --accent-ai: #a78bfa;
    --accent-ai-soft: #2e1065;
    --success-bg: #064e3b;
    --success-text: #6ee7b7;
    --error-text: #fca5a5;
    --ww-green: #4ade80;
    --coles-red: #f87171;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-page);
    color: var(--text-primary);
    margin: 0;
    display: flex;
    justify-content: center;
    transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

.app-container {
    width: 90%;
    max-width: 1200px;
    margin-top: 50px;
    text-align: center;
}

.main-header {
    position: relative;
    margin-bottom: 8px;
}

/* Top navbar — compact brand mark + theme toggle */
.site-navbar {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto 4px;
    padding: 4px 0 0;
    text-align: left;
}

.site-tagline {
    margin: 0 0 12px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: color var(--transition-smooth);
}

/* Brand logo — shared PNG asset, nav + hero sizes */
.brand-logo-link,
.brand-hero-link {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    color: inherit;
    transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.brand-logo-link:hover,
.brand-logo-link:focus-visible,
.brand-hero-link:hover,
.brand-hero-link:focus-visible {
    opacity: 0.88;
    transform: translateY(-1px);
}

.brand-logo-link:focus-visible,
.brand-hero-link:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 8px;
}

.brand-logo-text {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.brand-logo {
    display: block;
    height: auto;
    flex-shrink: 0;
}

/* Navbar mark — ~38px tall */
.brand-logo--nav {
    height: 38px;
    width: auto;
}

.brand-logo-link .brand-logo-text {
    display: none;
}

@media (min-width: 480px) {
    .brand-logo-link .brand-logo-text {
        display: inline;
    }
}

/* Hero mark — centered above search on idle home */
.brand-hero-link {
    justify-content: center;
    margin: 8px auto 20px;
    max-height: 120px;
    overflow: hidden;
    opacity: 1;
    transform: scale(1);
    transition:
        opacity 0.35s var(--ease-smooth),
        max-height 0.4s var(--ease-smooth),
        margin 0.4s var(--ease-smooth),
        transform 0.35s var(--ease-smooth);
}

.brand-logo--hero {
    width: min(180px, 58vw);
    max-width: 200px;
    margin: 0 auto;
}

/* Hide hero logo once compare results are shown */
.search-section--has-results .brand-hero-link {
    max-height: 0;
    margin-top: 0;
    margin-bottom: 0;
    opacity: 0;
    transform: scale(0.92);
    pointer-events: none;
}

.site-navbar--terms {
    margin-bottom: 20px;
}

/* Location consent popup (in-app) → browser Geolocation API only after "Share location" */
.location-modal {
    position: fixed;
    inset: 0;
    z-index: 1990;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.location-modal.hidden {
    display: none;
}

body.location-modal-open {
    overflow: hidden;
}

.location-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
}

.location-modal-content {
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    width: min(420px, 100%);
    padding: 18px 16px;
    text-align: left;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.18);
    transition: background-color var(--transition-smooth), border-color var(--transition-smooth);
}

.location-modal--closing .location-modal-content {
    opacity: 0;
    transform: scale(0.96);
    transition:
        opacity 0.24s var(--ease-smooth),
        transform 0.24s var(--ease-smooth);
}

.location-modal--closing .location-modal-backdrop {
    opacity: 0;
    transition: opacity 0.24s var(--ease-smooth);
}

.location-notice-icon {
    font-size: 1.15rem;
    line-height: 1.4;
    flex-shrink: 0;
}

.location-notice-body {
    flex: 1;
    min-width: 0;
}

.location-notice-heading {
    margin: 0 0 4px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.location-notice-text {
    margin: 0 0 10px;
    font-size: 0.9rem;
    line-height: 1.45;
    color: var(--text-secondary);
}

.location-notice--resolved .location-notice-text {
    margin-bottom: 0;
}

.location-consent-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.location-btn {
    font: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 8px 14px;
    border-radius: 8px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background-color var(--transition-smooth), border-color var(--transition-smooth),
        color var(--transition-smooth), opacity var(--transition-smooth);
}

.location-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.location-btn--primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.location-btn--primary:hover:not(:disabled) {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

.location-btn--ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: var(--border-strong);
}

.location-btn--ghost:hover:not(:disabled) {
    color: var(--text-primary);
    border-color: var(--text-muted);
}

.main-header h1 {
    color: var(--text-primary);
    font-size: 2.5rem;
    margin-bottom: 5px;
    transition: color var(--transition-smooth);
}

.main-header .tagline {
    color: var(--text-secondary);
    margin: 0;
    transition: color var(--transition-smooth);
}

/* Nhóm nút góc phải header — Góp ý + dark mode */
.site-navbar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
    margin-left: auto;
}

/* Nút Góp ý Tally — ghost/outline, tinh tế, không lấn át ô tìm kiếm */
.navbar-feedback-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 14px;
    font: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1;
    color: var(--text-secondary);
    text-decoration: none;
    background: transparent;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    transition:
        color var(--transition-smooth),
        border-color var(--transition-smooth),
        background var(--transition-smooth);
}

.navbar-feedback-link:hover,
.navbar-feedback-link:focus-visible {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-ai-soft);
}

.navbar-feedback-link:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.navbar-feedback-icon {
    font-size: 1.05rem;
    line-height: 1;
}

.navbar-feedback-label {
    white-space: nowrap;
}

/* Mobile: header chật → chỉ icon 💬 */
@media (max-width: 479px) {
    .navbar-feedback-link {
        padding: 8px 10px;
        min-width: 40px;
        min-height: 40px;
    }

    .navbar-feedback-label {
        display: none;
    }
}

/* Dark / Light mode toggle — cạnh nút Góp ý */
.theme-toggle {
    position: relative;
    top: auto;
    right: auto;
    flex-shrink: 0;
    margin-left: 0;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    background: var(--bg-surface);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-smooth), background var(--transition-smooth), border-color var(--transition-smooth);
}

.theme-toggle:hover {
    transform: scale(1.06);
    border-color: var(--accent);
}

.theme-icon {
    font-size: 1.25rem;
    line-height: 1;
    transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.theme-icon-sun {
    display: none;
}

.theme-icon-moon {
    display: inline;
}

[data-theme="dark"] .theme-icon-sun {
    display: inline;
}

[data-theme="dark"] .theme-icon-moon {
    display: none;
}

/* Smooth reveal for result blocks */
@keyframes revealSlideIn {
    from {
        opacity: 0;
        transform: translateY(-12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal-animate {
    animation: revealSlideIn 0.35s var(--ease-smooth) forwards;
}

.product-card.reveal-animate {
    animation: revealSlideIn 0.3s var(--ease-smooth) forwards;
}

/* Main navigation tabs */
.main-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.main-tab {
    padding: 10px 18px;
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: 999px;
    font-size: 0.95rem;
    transition: background var(--transition-smooth), border-color var(--transition-smooth), color var(--transition-smooth);
}

.main-tab:hover {
    border-color: var(--accent);
    background: var(--bg-surface-muted);
}

.main-tab.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.tab-badge {
    display: inline-block;
    min-width: 1.25rem;
    padding: 0 6px;
    margin-left: 6px;
    background: #dc2626;
    color: #fff;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: bold;
}

.tab-panel {
    transition: opacity var(--transition-smooth);
}

.tab-panel.hidden {
    display: none;
}

/* Result panels: collapse via opacity + max-height (no layout jump) */
.summary-section,
.matched-section,
.ai-results-section {
    transition: opacity var(--transition-smooth), transform var(--transition-smooth), margin var(--transition-smooth), padding var(--transition-smooth);
}

.summary-section:not(.hidden),
.matched-section:not(.hidden) {
    animation: revealSlideIn 0.35s var(--ease-smooth);
}

/* Price watch bell button */
.product-title-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}

.product-name-wrap {
    flex: 1;
    min-width: 0;
    font-weight: bold;
}

.product-name-wrap .product-link {
    font-weight: bold;
}

.watchlist-btn {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    padding: 0;
    border: 1px solid #e5e7eb;
    border-radius: 50%;
    background: #fff;
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    opacity: 0.55;
    transition: opacity 0.2s, background 0.2s, transform 0.15s;
}

.watchlist-btn:hover {
    opacity: 1;
    background: #fef3c7;
    transform: scale(1.05);
}

.watchlist-btn.is-watching {
    opacity: 1;
    background: #fef9c3;
    border-color: #f59e0b;
    box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.25);
}

/* Price watchlist panel */
.watchlist-panel {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.08);
    text-align: left;
}

.watchlist-panel h2 {
    margin: 0 0 8px;
    font-size: 1.35rem;
    color: var(--text-primary);
}

.watchlist-intro {
    margin: 0 0 16px;
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.refresh-watchlist-btn {
    background: #059669;
    margin-bottom: 12px;
}

.refresh-watchlist-btn:hover {
    background: #047857;
}

.refresh-watchlist-btn:disabled {
    background: #6ee7b7;
}

.watchlist-status {
    font-size: 0.88rem;
    color: #6b7280;
    margin-bottom: 16px;
    min-height: 1.2em;
}

.watchlist-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.watchlist-empty {
    grid-column: 1 / -1;
    color: #6b7280;
    text-align: center;
    padding: 32px 16px;
}

.watchlist-card {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0;
    background: var(--bg-surface-muted);
    position: relative;
    overflow: hidden;
    transition: border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.watchlist-card:hover {
    border-color: var(--border-strong);
}

.watchlist-card.is-chart-open {
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}

.watchlist-card.price-down {
    border-color: #10b981;
    background: var(--success-bg);
}

.price-drop-tag {
    display: block;
    width: 100%;
    margin-bottom: 10px;
    padding: 8px 10px;
    background: #10b981;
    color: #fff;
    font-size: 0.82rem;
    font-weight: bold;
    border-radius: 6px;
    text-align: center;
}

.watchlist-card-summary {
    position: relative;
    padding: 14px 40px 14px 14px;
    cursor: pointer;
    user-select: none;
    transition: background-color var(--transition-smooth);
}

.watchlist-card-summary:hover {
    background: var(--bg-surface);
}

.watchlist-card-summary:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
}

.watchlist-card-head {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.watchlist-chevron {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    margin-top: 24px;
    margin-right: 4px;
    border-radius: 6px;
    background: var(--bg-surface);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    line-height: 1;
    transition: transform var(--transition-smooth), color var(--transition-smooth);
}

.watchlist-chevron::before {
    content: '›';
    display: block;
    transform: rotate(90deg);
}

.watchlist-card.is-chart-open .watchlist-chevron {
    color: var(--accent);
}

.watchlist-card.is-chart-open .watchlist-chevron::before {
    transform: rotate(-90deg);
}

.watch-dual-prices {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-bottom: 8px;
}

.watch-dual-price {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 8px 10px;
    border-radius: 8px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.watch-dual-label {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.watch-dual-price--ww .watch-dual-label { color: var(--ww-green); }
.watch-dual-price--coles .watch-dual-label { color: var(--coles-red); }

.watch-dual-price strong {
    font-size: 1.05rem;
    color: var(--text-primary);
}

.price-chart-container {
    display: none;
    padding: 0 14px 14px;
    border-top: 1px solid var(--border-color);
    animation: watchlist-chart-reveal 0.35s var(--ease-smooth);
}

.watchlist-card.is-chart-open .price-chart-container {
    display: block;
}

@keyframes watchlist-chart-reveal {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.price-chart-status {
    margin: 10px 0 6px;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.price-chart-status.is-error {
    color: var(--error-text);
}

.price-chart-canvas-wrap {
    position: relative;
    height: 200px;
    width: 100%;
}

.watchlist-canvas {
    width: 100% !important;
    height: 100% !important;
}

/* PDF export (Beta — free for all users) */
.export-pdf-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin: 0 0 12px;
    padding: 10px 16px;
    font-size: 0.88rem;
    font-weight: 600;
    border-radius: 8px;
    border: 1px solid var(--accent);
    background: transparent;
    color: var(--accent);
    cursor: pointer;
    transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

.export-pdf-btn:hover {
    background: var(--accent);
    color: #fff;
}

.export-pdf-btn--ai {
    margin-bottom: 16px;
}

.cart-panel .export-pdf-btn {
    width: 100%;
    margin-bottom: 8px;
}

.watchlist-thumb {
    width: 72px;
    height: 72px;
    object-fit: contain;
    border-radius: 6px;
    background: #fff;
}

.watchlist-card-body {
    flex: 1;
    min-width: 0;
}

.watch-store {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: bold;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.watch-store.woolies { color: #008a00; }
.watch-store.coles { color: #e01a22; }

.watch-name {
    margin: 0 0 8px;
    font-size: 0.95rem;
    line-height: 1.3;
    color: var(--text-primary);
}

.watch-price-was {
    margin: 0;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.watch-price-pending {
    margin: 4px 0 0;
    font-size: 0.82rem;
    color: var(--text-muted);
    font-style: italic;
}

.watchlist-remove {
    position: absolute;
    top: 10px;
    right: 10px;
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    padding: 0;
    border: none;
    border-radius: 6px;
    background: var(--bg-surface);
    color: var(--text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    z-index: 2;
    transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

.watchlist-remove:hover {
    background: #fee2e2;
    color: #b91c1c;
}

[data-theme="dark"] .watchlist-remove:hover {
    background: rgba(248, 113, 113, 0.2);
    color: var(--error-text);
}

.search-section {
    margin: 16px 0 30px;
}

/* Recent searches */
.recent-searches {
    margin-top: 14px;
    text-align: left;
    transition: opacity var(--transition-smooth);
}

.recent-searches.hidden {
    display: none;
}

.recent-searches-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 10px;
}

.recent-searches-title {
    margin: 0;
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
}

.clear-history-btn {
    padding: 4px 10px;
    font-size: 0.78rem;
    font-weight: 600;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 999px;
}

.clear-history-btn:hover {
    background: var(--bg-surface-muted);
    color: var(--error-text);
    border-color: var(--error-text);
}

.recent-searches-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-start;
}

.history-tag {
    padding: 6px 14px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    cursor: pointer;
    transition: background var(--transition-smooth), border-color var(--transition-smooth), transform var(--transition-smooth);
    max-width: 100%;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-tag:hover {
    background: var(--accent-ai-soft);
    border-color: var(--accent-ai);
    transform: translateY(-1px);
}

.history-tag-ai {
    border-style: dashed;
    border-color: var(--accent-ai);
}

.ai-list-section {
    background: white;
    border-radius: 10px;
    padding: 12px 14px;
    margin-bottom: 16px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.06);
    text-align: left;
}

.ai-list-header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 8px 12px;
    margin-bottom: 10px;
}

.ai-list-section h2 {
    margin: 0;
    font-size: 0.95rem;
    color: #1f2937;
}

.ai-list-hint {
    margin: 0;
    color: #6b7280;
    font-size: 0.82rem;
    flex: 1;
    min-width: 180px;
}

.ai-list-row {
    display: flex;
    align-items: stretch;
    gap: 10px;
}

.ai-list-textarea {
    flex: 1;
    min-width: 0;
    box-sizing: border-box;
    padding: 8px 10px;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: inherit;
    resize: vertical;
    min-height: 44px;
    max-height: 88px;
}

.ai-list-textarea:focus {
    outline: none;
    border-color: #7c3aed;
}

.analyze-list-btn {
    flex-shrink: 0;
    align-self: flex-end;
    margin: 0;
    padding: 8px 14px;
    font-size: 0.85rem;
    background: #7c3aed;
    white-space: nowrap;
}

.analyze-list-btn:hover {
    background: #6d28d9;
}

.analyze-list-btn:disabled {
    background: #a78bfa;
    cursor: not-allowed;
}

/* Thanh loading % khi Analyze List by AI — xanh nhạt → đậm dần */
.ai-analyze-progress {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
}

.ai-analyze-progress.hidden {
    display: none;
}

.ai-analyze-progress-track {
    flex: 1;
    height: 8px;
    background: #dbeafe;
    border-radius: 999px;
    overflow: hidden;
}

.ai-analyze-progress-fill {
    height: 100%;
    width: 0%;
    border-radius: 999px;
    background: #93c5fd;
    transition: width 0.2s ease-out, background-color 0.2s ease-out;
}

.ai-analyze-progress-label {
    flex-shrink: 0;
    min-width: 2.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: #2563eb;
    text-align: right;
}

.ai-results-section {
    background: var(--bg-surface);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    text-align: left;
    border: 1px solid var(--border-color);
}

.ai-results-section.ai-collapsed {
    padding: 8px 12px;
}

.ai-accordion-bar {
    display: block;
    width: 100%;
    margin: 0;
    padding: 10px 14px;
    border: 1px dashed #7c3aed;
    border-radius: 8px;
    background: linear-gradient(180deg, #faf5ff 0%, #f3e8ff 100%);
    color: #5b21b6;
    font-size: 0.88rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}

.ai-accordion-bar:hover {
    background: #ede9fe;
    border-color: #6d28d9;
}

.ai-collapse-bar {
    margin-bottom: 12px;
    border-style: solid;
    background: #f5f3ff;
    color: #4c1d95;
}

.ai-expand-bar {
    border-style: dashed;
}

.ai-accordion-bar.hidden {
    display: none;
}

.ai-results-body {
    overflow: hidden;
    max-height: 12000px;
    opacity: 1;
    transform: translateY(0);
    transition: max-height 0.35s ease-in-out, opacity 0.3s ease-in-out, transform 0.3s ease-in-out, margin 0.3s ease-in-out;
}

.ai-results-section.ai-collapsed .ai-results-body {
    max-height: 0;
    opacity: 0;
    margin: 0;
    transform: translateY(-6px);
    pointer-events: none;
}

.ai-results-section {
    transition: padding 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

.ai-results-section h2 {
    margin-top: 0;
}

.ai-parse-info {
    font-size: 0.9rem;
    color: #4b5563;
    margin-bottom: 16px;
}

.ai-parsed-list {
    margin: 8px 0 0;
    padding-left: 20px;
}

.ai-totals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.ai-total-card {
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 14px;
    background: #fafafa;
}

.ai-total-card.highlight {
    border-color: #7c3aed;
    background: #f5f3ff;
}

.ai-total-card h3 {
    margin: 0 0 6px;
    font-size: 0.85rem;
    text-transform: uppercase;
    color: #6b7280;
}

.ai-total-card .amount {
    font-size: 1.5rem;
    font-weight: bold;
    color: #111827;
    margin: 0;
}

.ai-savings-banner {
    margin: 0 0 16px;
    padding: 12px 14px;
    background: var(--success-bg);
    color: var(--success-text);
    border-radius: 8px;
    font-size: 0.95rem;
    line-height: 1.45;
    transition: background var(--transition-smooth), color var(--transition-smooth);
}

/* Gamification – tổng tiền tiết kiệm (chỉ trong panel giỏ hàng) */
.trip-savings-banner {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 999px;
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    border: 1px solid #6ee7b7;
    color: #065f46;
    font-size: 0.92rem;
    font-weight: 600;
    line-height: 1.35;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.2);
}

.trip-savings-banner.hidden {
    display: none;
}

.trip-savings-banner--celebrate {
    background: linear-gradient(135deg, #fef3c7 0%, #d1fae5 50%, #fce7f3 100%);
    border-color: #f59e0b;
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.25);
}

.trip-savings-banner--pop {
    animation: savingsPop 0.55s ease;
}

@keyframes savingsPop {
    0% { transform: scale(0.92); opacity: 0.6; }
    55% { transform: scale(1.04); }
    100% { transform: scale(1); opacity: 1; }
}

.trip-savings-icon {
    font-size: 1.25rem;
    line-height: 1;
}

.trip-savings-text strong {
    color: #047857;
    font-size: 1.05em;
}

.cart-panel .trip-savings-banner {
    width: 100%;
    margin-bottom: 12px;
    border-radius: 12px;
    justify-content: center;
    text-align: center;
}

.item-saving-badge {
    display: inline-block;
    margin-top: 6px;
    padding: 4px 10px;
    font-size: 0.72rem;
    font-weight: 600;
    color: #047857;
    background: #d1fae5;
    border: 1px solid #6ee7b7;
    border-radius: 999px;
    line-height: 1.3;
}

.match-side .item-saving-badge,
.ai-line-stores .item-saving-badge {
    display: block;
    width: fit-content;
    max-width: 100%;
}

.ai-split-columns {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.ai-split-col h3 {
    margin: 0 0 10px;
    font-size: 1rem;
}

.ai-split-col.coles h3 { color: #e01a22; }
.ai-split-col.woolies h3 { color: #008a00; }

.ai-split-item {
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 10px;
    margin-bottom: 8px;
    font-size: 0.88rem;
}

.ai-split-item .request-label {
    color: #6b7280;
    margin: 0 0 4px;
    font-size: 0.8rem;
}

.ai-split-item .product-title {
    margin: 0 0 4px;
    font-weight: bold;
}

.ai-product-preview {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin: 6px 0 4px;
}

.ai-product-thumb {
    width: 56px;
    height: 56px;
    object-fit: contain;
    flex-shrink: 0;
    display: block;
    border-radius: 6px;
    background: #fafafa;
}

.ai-product-name {
    margin: 0;
    font-size: 0.85rem;
    line-height: 1.35;
    font-weight: 600;
}

.ai-product-name .product-link {
    color: inherit;
    text-decoration: none;
}

.ai-product-name .product-link:hover {
    text-decoration: underline;
}

.ai-line-items h3 {
    margin: 0 0 10px;
    font-size: 1rem;
}

.ai-line-row {
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 10px;
}

.ai-line-row .line-header {
    font-weight: bold;
    margin-bottom: 8px;
}

.pricing-note {
    margin: 2px 0 4px;
    font-size: 0.78rem;
    color: #6b7280;
    font-style: italic;
}

.ai-line-price {
    margin: 0;
    font-weight: bold;
    font-size: 1.05rem;
}

.ai-split-item .pricing-note {
    margin: 2px 0 6px;
}

.imputed-note,
.cart-incomplete-note {
    margin: 4px 0 0;
    font-size: 0.78rem;
    color: #b45309;
    font-style: italic;
    line-height: 1.35;
}

.ai-line-price.imputed {
    color: #b45309;
}

.cart-incomplete-note {
    margin-top: 8px;
    font-size: 0.75rem;
}

.ai-single-store-hint {
    margin: 0 0 14px;
    font-size: 0.9rem;
    color: #4b5563;
}

.ai-line-stores {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    font-size: 0.88rem;
}

.ai-line-stores .pick {
    outline: 2px solid #7c3aed;
    border-radius: 6px;
    padding: 6px;
}

.ai-line-stores .missing {
    color: #9ca3af;
    font-style: italic;
}

.search-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.search-bar-actions {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    flex-shrink: 0;
}

.scanner-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    flex-shrink: 0;
}

/* Subtle caption under the camera icon — stays minimal in light/dark */
.scanner-label {
    font-size: 0.6875rem;
    line-height: 1.2;
    color: var(--text-muted);
    letter-spacing: 0.02em;
    text-transform: lowercase;
    white-space: nowrap;
    user-select: none;
}

.scanner-open-btn {
    width: 48px;
    height: 48px;
    padding: 0;
    font-size: 1.35rem;
    line-height: 1;
    background: var(--bg-input);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    flex-shrink: 0;
    transition: background-color var(--transition-smooth), border-color var(--transition-smooth);
}

.scanner-open-btn:hover {
    background: var(--bg-surface-muted);
    border-color: var(--accent);
}

/* Barcode scanner modal */
.scanner-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.scanner-modal.hidden {
    display: none;
}

.scanner-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.65);
}

.scanner-modal-content {
    position: relative;
    width: min(420px, 100%);
    background: #fff;
    border-radius: 14px;
    padding: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.scanner-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.scanner-modal-header h3 {
    margin: 0;
    font-size: 1.1rem;
}

.scanner-close-btn {
    width: 36px;
    height: 36px;
    padding: 0;
    background: #f3f4f6;
    color: #374151;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
}

.scanner-close-btn:hover {
    background: #e5e7eb;
}

.barcode-reader {
    width: 100%;
    min-height: min(52vh, 360px);
    border-radius: 10px;
    overflow: hidden;
    background: #111827;
    position: relative;
}

.barcode-reader video {
    width: 100% !important;
    height: auto !important;
    min-height: min(48vh, 320px);
    border-radius: 10px;
    object-fit: cover;
    display: block;
}

.scanner-status {
    margin: 12px 0 0;
    font-size: 0.88rem;
    color: #6b7280;
    text-align: center;
}

.scanner-status.error {
    color: #b91c1c;
}

.barcode-scan-banner {
    margin: 0 0 12px;
    padding: 10px 12px;
    background: #eff6ff;
    color: #1e40af;
    border-radius: 8px;
    font-size: 0.9rem;
}

input[type="text"],
.ai-list-textarea {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    transition: border-color var(--transition-smooth), background var(--transition-smooth);
}

input[type="text"] {
    width: 400px;
    padding: 12px;
    border-radius: 8px;
    font-size: 1rem;
}

/* Compare bar: smooth fade when rotating Australian grocery placeholder hints */
#itemInput::placeholder {
    transition: opacity 0.32s var(--ease-smooth, ease);
}

#itemInput.search-input--placeholder-fade::placeholder {
    opacity: 0;
}

input[type="text"]:focus,
.ai-list-textarea:focus {
    outline: none;
    border-color: var(--accent);
}

button {
    padding: 12px 25px;
    background-color: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: background var(--transition-smooth), transform var(--transition-smooth);
}

button:hover {
    background-color: var(--accent-hover);
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.comparison-grid--two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.store-column {
    background: var(--bg-surface);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
}

.woolies-brand h2 { color: var(--ww-green); border-bottom: 3px solid var(--ww-green); padding-bottom: 10px; }
.coles-brand h2 { color: var(--coles-red); border-bottom: 3px solid var(--coles-red); padding-bottom: 10px; }

.product-card {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
    text-align: left;
    background: var(--bg-surface-muted);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

.product-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
}
.product-thumb {
    width: 80px;
    height: 80px;
    object-fit: contain;
    display: block;
    margin-bottom: 10px;
    border-radius: 6px;
    background: #fafafa;
}
.match-thumb {
    width: 56px;
    height: 56px;
    object-fit: contain;
    display: block;
    margin: 0 0 8px;
    border-radius: 6px;
    background: #fafafa;
}
.product-name { font-weight: bold; margin: 0 0 10px 0; }
.status-text { color: #666; }
.price-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin: 0 0 8px;
}

.price-tag { font-size: 1.4rem; color: var(--text-primary); margin: 0; }

.price-block {
    margin-bottom: 4px;
}

.unit-price-text {
    margin: 4px 0 0;
    font-size: 0.85rem;
    color: #6b7280;
    font-weight: normal;
}

.special-tag {
    display: inline-block;
    background: #dc2626;
    color: #fff;
    font-size: 0.72rem;
    font-weight: bold;
    padding: 3px 8px;
    border-radius: 4px;
    letter-spacing: 0.03em;
}

.product-link {
    color: inherit;
    text-decoration: none;
}

.product-link:hover {
    text-decoration: underline;
}

.product-link img {
    display: block;
}

.hidden { display: none; }

.loading { color: #666; font-style: italic; }
.error { color: #b91c1c; }

.summary-section,
.matched-section {
    background: var(--bg-surface);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    text-align: left;
}

.summary-section h2,
.matched-section h2 {
    margin-top: 0;
    font-size: 1.2rem;
}

.matched-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.matched-section-hint {
    margin: -4px 0 12px;
    font-size: 0.88rem;
    color: #6b7280;
}

.match-row {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto;
    gap: 12px;
    align-items: start;
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 12px;
}

.match-side {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-width: 0;
}

.match-side .select-btn.match-add-btn {
    width: 100%;
    margin-top: 10px;
}

/* Hàng ngang so sánh theo từ khóa (WW / Coles) */
.aligned-compare-section {
    margin-bottom: 28px;
}

/* Thanh bật/tắt cột siêu thị */
.store-filter-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0 0 18px;
    padding: 12px 14px;
    background: var(--bg-surface-muted);
    border: 1px solid var(--border-color);
    border-radius: 10px;
}

.store-filter-toolbar.hidden {
    display: none;
}

.store-filter-btn {
    padding: 8px 16px;
    font-size: 0.88rem;
    font-weight: 600;
    border-radius: 999px;
    border: 2px solid transparent;
    cursor: pointer;
    background: #fff;
    color: #6b7280;
    opacity: 0.55;
    transition: opacity 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.store-filter-btn.is-active {
    opacity: 1;
    box-shadow: var(--shadow-sm);
}

.store-filter-btn.woolies.is-active {
    border-color: var(--ww-green);
    color: var(--ww-green);
}

.store-filter-btn.coles.is-active {
    border-color: var(--coles-red);
    color: var(--coles-red);
}

.store-filter-btn:not(.is-active):hover {
    opacity: 0.75;
}

/* Lưới 2 cột Coles ↔ Woolworths (50%–50%); co giãn khi ẩn 1 cột */
.aligned-row-stores {
    display: grid;
    gap: 14px;
}

#aligned-compare-rows.cols-1 .aligned-row-stores {
    grid-template-columns: minmax(0, 1fr);
}

#aligned-compare-rows.cols-2 .aligned-row-stores {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.aligned-store-cell.store-col-hidden {
    display: none !important;
}

.compare-partial-banner {
    margin: 0 0 16px;
    padding: 12px 14px;
    background: #fffbeb;
    border: 1px solid #fcd34d;
    border-radius: 8px;
    color: #92400e;
    font-size: 0.9rem;
    line-height: 1.45;
}

.aligned-compare-hint {
    color: #6b7280;
    font-size: 0.9rem;
    margin: 0 0 16px;
}

.aligned-compare-rows {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.aligned-keyword-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.aligned-keyword-heading {
    margin: 0;
    font-size: 1.15rem;
    color: var(--text-primary);
}

.aligned-keyword-count {
    margin: -4px 0 8px;
    font-size: 0.85rem;
    color: #6b7280;
}

.aligned-compare-row {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 16px 20px;
    box-shadow: var(--shadow-sm);
}

.aligned-row-rank {
    margin: 0 0 8px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #9ca3af;
}

.aligned-store-cell {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    background: var(--bg-surface-muted);
    min-height: 180px;
    display: flex;
    flex-direction: column;
}

.aligned-store-cell .store-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin: 0 0 10px;
}

.aligned-store-cell .store-label.woolies { color: var(--ww-green); }
.aligned-store-cell .store-label.coles { color: var(--coles-red); }

.aligned-store-cell.unavailable {
    background: #f3f4f6;
    border-style: dashed;
    border-color: #d1d5db;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.aligned-store-cell.unavailable .unavailable-inner {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 12px;
    text-align: center;
}

.aligned-store-cell.unavailable--api {
    background: #fef2f2;
    border-color: #fecaca;
}

.aligned-store-cell .unavailable-label {
    margin: 0;
    color: #6b7280;
    font-size: 0.9rem;
    line-height: 1.4;
}

.aligned-store-cell .unavailable-error {
    margin: 0;
    color: #dc2626;
    font-size: 0.85rem;
    line-height: 1.45;
    font-weight: 500;
    max-width: 100%;
}

.aligned-store-cell .unavailable-hint {
    margin: 0;
    color: #9ca3af;
    font-size: 0.82rem;
}

.aligned-store-cell.product-card.cheapest {
    border-color: #f59e0b;
    box-shadow: 0 0 0 1px rgba(245, 158, 11, 0.35);
}

.aligned-price-area {
    margin-top: 4px;
}

.aligned-saving-slot:empty {
    display: none;
}

.aligned-cell-meta {
    margin-top: auto;
    padding-top: 10px;
}

.comparison-grid--browse.hidden {
    display: none;
}

.match-vs {
    font-weight: bold;
    color: #888;
}

.match-meta {
    min-width: 140px;
    text-align: right;
}

.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: bold;
    color: white;
}

.badge.woolies-win { background: #008a00; }
.badge.coles-win { background: #e01a22; }
.badge.tie { background: #6b7280; }

.save-text {
    margin: 6px 0 0;
    font-size: 0.85rem;
    color: #555;
}

.store-label {
    margin: 0 0 4px;
    font-size: 0.8rem;
    font-weight: bold;
    text-transform: uppercase;
}

.store-label.woolies { color: #008a00; }
.store-label.coles { color: #e01a22; }

.product-card.cheapest {
    border-color: #f59e0b;
    background: #fffbeb;
}

.cheapest-label {
    margin: 8px 0 0;
    font-size: 0.85rem;
    color: #b45309;
    font-weight: bold;
}

.cart-panel {
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: min(320px, calc(100vw - 40px));
    max-height: 70vh;
    overflow-y: auto;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
    padding: 16px;
    text-align: left;
    z-index: 1000;
}

.cart-panel h3 {
    margin: 0 0 12px;
    font-size: 1.1rem;
}

.cart-items {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 12px;
}

.cart-item {
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 10px;
    font-size: 0.9rem;
}

.cart-item-name {
    margin: 0 0 6px;
    font-weight: bold;
}

.cart-item-prices {
    margin: 0 0 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.cart-item-prices .ww { color: #008a00; }
.cart-item-prices .coles { color: #e01a22; }

.cart-remove {
    padding: 4px 10px;
    font-size: 0.8rem;
    background: #f3f4f6;
    color: #374151;
}

.cart-remove:hover {
    background: #e5e7eb;
}

.cart-totals p {
    margin: 4px 0;
    font-size: 0.9rem;
}

.cart-savings {
    margin: 10px 0;
    font-size: 0.88rem;
    color: #065f46;
    background: #ecfdf5;
    padding: 8px;
    border-radius: 6px;
}

.clear-cart-btn {
    width: 100%;
    background: #6b7280;
    margin-top: 4px;
}

.clear-cart-btn:hover {
    background: #4b5563;
}

.select-btn {
    margin-top: 4px;
    width: 100%;
    background: #2563eb;
    font-size: 0.9rem;
    padding: 8px 12px;
}

/* Site footer (home + terms) — muted slate, minimalist */
.site-footer {
    margin: 28px 0 32px;
    padding: 16px 0 8px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.site-footer-meta {
    margin: 0 0 10px;
    font-size: 0.75rem;
    line-height: 1.5;
    color: var(--text-muted);
}

.site-footer-link,
.inline-legal-link {
    color: var(--text-secondary);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color var(--transition-smooth);
}

.site-footer-link:hover,
.inline-legal-link:hover {
    color: var(--accent);
}

/* Ẩn mặc định — app.js bật .is-visible sau /api/pageviews */
.pageviews-display {
    display: none;
    margin: 0 0 12px;
    font-size: 0.72rem;
    line-height: 1.4;
    color: var(--text-muted);
    letter-spacing: 0.01em;
    text-align: center;
}

.pageviews-display.is-visible {
    display: block;
}

.pageviews-display #pageviews-count {
    font-variant-numeric: tabular-nums;
    font-weight: 700;
    color: var(--text-secondary);
}

.site-footer-legal {
    margin: 0;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
    font-size: 0.78rem;
    line-height: 1.55;
    color: var(--text-muted);
    text-align: left;
}

/* Nút Feedback cố định — z-index cao hơn cart-panel (1000) để luôn bấm được */
.feedback-fab {
    position: fixed;
    right: max(16px, env(safe-area-inset-right, 0px));
    bottom: calc(20px + env(safe-area-inset-bottom, 0px));
    z-index: 1101;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 14px;
    font-size: 0.8125rem;
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
    text-decoration: none;
    cursor: pointer;
    pointer-events: auto;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth),
        border-color var(--transition-smooth), background-color var(--transition-smooth);
}

.feedback-fab:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.12);
}

.feedback-fab-text {
    display: inline;
    pointer-events: none;
}

/* Mobile nhỏ: chỉ icon tròn 💬 */
@media (max-width: 576px) {
    .feedback-fab {
        padding: 0;
        border-radius: 50%;
        width: 48px;
        height: 48px;
        min-width: 48px;
        font-size: 1.25rem;
    }

    .feedback-fab-text {
        display: none;
    }
}

/* AI analyzer — subtle legal caption under the button */
.ai-list-disclaimer {
    margin: 10px 0 0;
    font-size: 0.78rem;
    line-height: 1.45;
    color: var(--text-muted);
    text-align: left;
}

/* Terms of Use page (/terms) */
.terms-page-body {
    text-align: left;
}

.terms-page-container {
    text-align: left;
    max-width: 800px;
}

.terms-page-header {
    margin-bottom: 8px;
}

.terms-home-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-primary);
}

.terms-home-link:hover .terms-home-label {
    color: var(--accent);
}

.terms-home-label {
    font-size: 1.35rem;
    font-weight: 700;
    transition: color var(--transition-smooth);
}

.terms-content {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 28px 32px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 8px;
}

.terms-content h1 {
    margin: 0 0 8px;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.terms-updated {
    margin: 0 0 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.terms-content h2 {
    margin: 0 0 12px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.terms-content p {
    margin: 0 0 14px;
    font-size: 0.95rem;
    line-height: 1.65;
    color: var(--text-secondary);
}

.terms-content ul {
    margin: 0 0 16px;
    padding-left: 1.25rem;
    color: var(--text-secondary);
}

.terms-content li {
    margin-bottom: 10px;
    font-size: 0.95rem;
    line-height: 1.6;
}

.terms-content li strong {
    color: var(--text-primary);
}

.terms-divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 22px 0;
}

.terms-back-wrap {
    margin-top: 28px;
    margin-bottom: 0;
}

.terms-back-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
    text-decoration: none;
}

.terms-back-link:hover {
    text-decoration: underline;
}

@media (max-width: 640px) {
    .terms-content {
        padding: 20px 18px;
    }

    .terms-content h1 {
        font-size: 1.45rem;
    }
}

@media (max-width: 900px) {
    .ai-list-row {
        flex-direction: column;
    }

    .analyze-list-btn {
        align-self: stretch;
        width: 100%;
    }

    .ai-totals-grid {
        grid-template-columns: 1fr;
    }

    .ai-split-columns,
    .ai-line-stores {
        grid-template-columns: 1fr;
    }

    .comparison-grid,
    .comparison-grid--two,
    .aligned-row-stores {
        grid-template-columns: 1fr;
    }

    .match-row {
        grid-template-columns: 1fr;
        text-align: left;
    }

    .match-meta {
        text-align: left;
    }

    input[type="text"] {
        width: 100%;
    }

    .search-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .search-bar input[type="text"] {
        width: 100%;
    }

    .search-bar-actions {
        width: 100%;
        align-items: stretch;
    }

    #searchBtn {
        flex: 1;
        min-width: 0;
    }

    .scanner-action {
        flex-shrink: 0;
    }

    .feedback-fab {
        bottom: calc(16px + env(safe-area-inset-bottom, 0px));
        right: max(12px, env(safe-area-inset-right, 0px));
    }
}

/* Dark mode – override hard-coded colors */
[data-theme="dark"] .product-card.cheapest {
    background: #422006;
    border-color: #f59e0b;
}

[data-theme="dark"] .watchlist-card.price-down {
    background: #064e3b;
}

[data-theme="dark"] .ai-total-card.highlight {
    background: var(--accent-ai-soft);
}

[data-theme="dark"] .ai-accordion-bar {
    background: linear-gradient(180deg, #2e1065 0%, #1e1b4b 100%);
    color: #e9d5ff;
}

[data-theme="dark"] .barcode-scan-banner {
    background: #1e3a5f;
    color: #93c5fd;
}

[data-theme="dark"] .scanner-modal-content {
    background: var(--bg-surface);
    color: var(--text-primary);
}

[data-theme="dark"] .ai-analyze-progress-track {
    background: #1e3a5f;
}

[data-theme="dark"] .ai-analyze-progress-label {
    color: #93c5fd;
}

[data-theme="dark"] .trip-savings-banner {
    background: linear-gradient(135deg, #064e3b 0%, #14532d 100%);
    border-color: #10b981;
    color: #a7f3d0;
}

[data-theme="dark"] .trip-savings-text strong {
    color: #6ee7b7;
}

[data-theme="dark"] .item-saving-badge {
    background: #064e3b;
    border-color: #10b981;
    color: #a7f3d0;
}

[data-theme="dark"] .match-row,
[data-theme="dark"] .ai-split-item,
[data-theme="dark"] .ai-line-row,
[data-theme="dark"] .ai-product-thumb,
[data-theme="dark"] .match-thumb,
[data-theme="dark"] .product-thumb {
    background: #2d2d2d;
}
[data-theme="dark"] .cart-item {
    background: var(--bg-surface-muted);
    border-color: var(--border-color);
}

[data-theme="dark"] .status-text,
[data-theme="dark"] .loading {
    color: var(--text-secondary);
}

[data-theme="dark"] .site-footer-legal,
[data-theme="dark"] .site-footer-meta,
[data-theme="dark"] .ai-list-disclaimer,
[data-theme="dark"] .pageviews-display {
    color: var(--text-muted);
}

[data-theme="dark"] .pageviews-display #pageviews-count {
    color: var(--text-secondary);
}

[data-theme="dark"] .feedback-fab {
    background: var(--bg-surface-elevated);
    border-color: var(--border-strong);
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .feedback-fab:hover {
    border-color: var(--accent);
}

[data-theme="dark"] .scanner-open-btn {
    background: var(--bg-input);
    border-color: var(--border-strong);
}