:root {
    --surface: #fff8f6;
    --surface-dim: #e2d8d6;
    --surface-container-lowest: #ffffff;
    --surface-container-low: #fcf1ef;
    --surface-container: #f6ecea;
    --surface-container-high: #f0e6e4;
    --surface-container-highest: #eae0de;
    --on-surface: #1f1b1a;
    --on-surface-variant: #59413b;
    --outline: #8c716a;
    --outline-variant: #e0bfb7;
    --primary: #a83211;
    --on-primary: #ffffff;
    --primary-container: #ca4a28;
    --secondary: #7f5700;
    --on-secondary: #ffffff;
    --secondary-container: #febe4f;
    --on-secondary-container: #724d00;
    --tertiary: #396632;
    --on-tertiary: #ffffff;
    --tertiary-container: #518048;
    --error: #ba1a1a;
    --on-error: #ffffff;
    --error-container: #ffdad6;
    --on-error-container: #93000a;
    --background: #fff8f6;
    --on-background: #1f1b1a;

    --radius-sm: 0.25rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    --gutter: 1.5rem;
    --margin: 2.5rem;
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2.5rem;

    --font-display: 'Epilogue', 'PingFang TC', 'Noto Sans TC', sans-serif;
    --font-body: 'Plus Jakarta Sans', 'PingFang TC', 'Noto Sans TC', sans-serif;

    --shadow-1: 0 4px 16px -2px rgba(43, 38, 37, 0.05);
    --shadow-2: 0 10px 24px -4px rgba(168, 50, 17, 0.08), 0 4px 12px -2px rgba(43, 38, 37, 0.04);
    --shadow-3: 0 20px 40px -8px rgba(43, 38, 37, 0.16);
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
    font-family: var(--font-body);
    background: var(--background);
    color: var(--on-surface);
    font-size: 16px;
    line-height: 1.6;
}

a {
    -webkit-tap-highlight-color: transparent;
}

h1, h2, h3, h4 { font-family: var(--font-display); color: var(--on-surface); line-height: 1.25; margin: 0 0 var(--space-md); }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 var(--margin); }

.site-main { min-height: 60vh; padding-bottom: var(--space-xl); }
.muted { color: var(--on-surface-variant); }

/* Header */
.site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255, 248, 246, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--outline-variant);
}
.nav { position: relative; display: flex; align-items: center; gap: var(--space-lg); min-height: 72px; }
.brand { font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; color: var(--primary); display: flex; align-items: center; gap: 0.5rem; }
.brand:hover { text-decoration: none; }
.brand-logo { height: 40px; width: auto; display: block; }
.nav-links { flex: 1; display: flex; justify-content: center; gap: var(--space-lg); }
.nav-links a { color: var(--on-surface); font-weight: 600; font-size: 0.95rem; }
.nav-links a:hover { color: var(--primary); text-decoration: none; }
.nav-icons { display: flex; align-items: center; gap: 0.4rem; }
.nav-icon {
    position: relative; display: inline-grid; place-items: center; width: 44px; height: 44px;
    border: 0; border-radius: var(--radius); background: var(--surface-container);
    color: var(--on-surface); cursor: pointer; transition: background .15s ease, color .15s ease;
}
.nav-icon:hover { background: var(--primary); color: var(--on-primary); text-decoration: none; }
.nav-icon svg { width: 22px; height: 22px; }
.cart-badge {
    position: absolute; top: -6px; right: -6px; display: inline-grid; place-items: center;
    min-width: 20px; height: 20px; padding: 0 5px; line-height: 1;
    background: var(--primary); color: var(--on-primary); border-radius: var(--radius-full);
    font-size: 0.7rem; font-weight: 700;
}
.nav-icon:hover .cart-badge { background: var(--on-primary); color: var(--primary); }
.nav-toggle { display: none; }
.nav-toggle .nav-icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .nav-icon-menu { display: none; }
.nav-toggle[aria-expanded="true"] .nav-icon-close { display: block; }
.account-panel {
    position: absolute; top: calc(100% + 8px); right: 0; z-index: 60;
    display: none; flex-direction: column; gap: 2px; min-width: 190px;
    background: var(--surface-container-lowest); border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md); box-shadow: var(--shadow-2); padding: var(--space-sm);
}
.account-panel.is-open { display: flex; }
.account-panel-name { margin: 0; padding: 0.5rem 0.7rem; font-weight: 600; color: var(--on-surface-variant); }
.account-panel a { padding: 0.5rem 0.7rem; border-radius: var(--radius); color: var(--on-surface); font-weight: 600; font-size: 0.95rem; }
.account-panel a:hover { background: var(--surface-container); color: var(--primary); text-decoration: none; }
.account-panel .btn { justify-content: center; }

.announce-bar { background: var(--secondary-container); color: var(--on-secondary-container); }
.announce-bar .container { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.announce-item { margin: 0.15rem 0; font-size: 0.9rem; }

/* Home marquee (index only) */
.marquee { overflow: hidden; background: var(--primary); color: var(--on-primary); }
.marquee-track { display: flex; width: max-content; animation: marquee-scroll 24s linear infinite; }
.marquee-group { display: flex; align-items: center; }
.marquee-item { padding: 0.55rem 0; font-size: 0.95rem; font-weight: 700; white-space: nowrap; letter-spacing: 0.12em; }
.marquee-item::after { content: "•"; margin: 0 1.6rem; opacity: 0.6; }
@keyframes marquee-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) {
    .marquee-track { animation: none; }
    .marquee-group[aria-hidden="true"] { display: none; }
}

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
    font-family: var(--font-body); font-weight: 600; font-size: 0.95rem;
    border: 1.5px solid transparent; border-radius: var(--radius);
    padding: 0.75rem 1.5rem; cursor: pointer; transition: transform .15s ease, background .15s ease;
    line-height: 1;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: var(--primary-container); }
.btn-secondary { background: #fef8ee; border-color: var(--secondary-container); color: var(--on-surface); }
.btn-ghost { background: transparent; color: var(--on-surface); }
.btn-ghost:hover { background: rgba(43, 38, 37, 0.04); }
.btn-danger { background: var(--error); color: var(--on-error); }
.btn-sm { padding: 0.5rem 0.9rem; font-size: 0.85rem; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

/* Alerts */
.alert { border-radius: var(--radius-md); padding: 0.75rem 1rem; margin: var(--space-md) 0; }
.alert-success { background: rgba(57, 102, 50, 0.12); color: var(--tertiary); }
.alert-error { background: var(--error-container); color: var(--on-error-container); }
.alert-info { background: var(--surface-container); color: var(--on-surface-variant); }

/* Hero */
.hero {
    display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-xl); align-items: center;
    padding: var(--space-xl) 0;
}
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); letter-spacing: -0.02em; }
.hero .lede { font-size: 1.1rem; color: var(--on-surface-variant); margin-bottom: var(--space-lg); }
.hero-actions { display: flex; gap: var(--space-md); flex-wrap: wrap; }
.hero-art {
    aspect-ratio: 4 / 3; border-radius: var(--radius-xl);
    background: linear-gradient(135deg, var(--secondary-container), var(--primary-container));
    box-shadow: var(--shadow-2);
    display: grid; place-items: center; color: #fff; font-family: var(--font-display); font-size: 1.5rem;
}

/* Sections */
.section { padding: var(--space-xl) 0; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-md); margin-block: var(--space-lg); }
.section-head h2 { margin: 0; font-size: 1.75rem; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem; font-weight: 700; color: var(--secondary); margin: 0.5rem 0; }

/* Category chips */
.chips { display: flex; gap: var(--space-sm); flex-wrap: wrap; margin-bottom: var(--space-lg); }
.chip {
    padding: 0.5rem 1rem; border-radius: var(--radius-full);
    background: var(--surface-container-lowest); border: 1px solid var(--outline-variant);
    color: var(--on-surface); font-weight: 600; font-size: 0.9rem;
}
.chip:hover { text-decoration: none; border-color: var(--primary); color: var(--primary); }
.chip.is-active { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }

/* Grids */
.grid { display: grid; gap: var(--gutter); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

/* Product card */
.card {
    background: var(--surface-container-lowest);
    border: 1px solid rgba(43, 38, 37, 0.06);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-1);
    overflow: hidden;
    display: flex; flex-direction: column;
    transition: transform .15s ease, box-shadow .15s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }
.card-media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--surface-container); }
.card-media img { width: 100%; height: 100%; object-fit: cover; }
.card-badge {
    position: absolute; top: 0.6rem; left: 0.6rem;
    padding: 0.2rem 0.7rem; border-radius: var(--radius-full);
    font-size: 0.72rem; font-weight: 700;
}
.badge-hot { background: rgba(254, 190, 79, 0.35); color: var(--on-secondary-container); }
.badge-meeting { background: rgba(43, 38, 37, 0.08); color: var(--on-surface); }
.badge-healthy { background: rgba(57, 102, 50, 0.12); color: var(--tertiary); }
.badge-flat { background: var(--surface-container-high); color: var(--on-surface-variant); }
.card-body { padding: var(--space-md); display: flex; flex-direction: column; gap: 0.4rem; flex: 1; }
.card-title { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; margin: 0; }
.card-desc { color: var(--on-surface-variant); font-size: 0.88rem; margin: 0; flex: 1; }
.card-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 0.4rem; }
.price { font-family: var(--font-display); font-weight: 700; color: var(--primary); font-size: 1.15rem; }
.add-btn {
    width: 38px; height: 38px; border-radius: var(--radius-full);
    background: var(--primary); color: var(--on-primary); border: 0;
    font-size: 1.3rem; line-height: 1; cursor: pointer; display: grid; place-items: center;
}
.add-btn:hover { background: var(--primary-container); }

/* Feature tiles */
.tile { background: var(--surface-container-low); border-radius: var(--radius-lg); padding: var(--space-lg); }
.tile h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }
.tile p { margin: 0; color: var(--on-surface-variant); font-size: 0.92rem; }

/* Forms */
.form-group { margin-bottom: var(--space-md); }
label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 0.35rem; }
input[type="text"], input[type="email"], input[type="password"], input[type="tel"], input[type="number"], input[type="datetime-local"], select, textarea {
    width: 100%; padding: 0.65rem 0.8rem;
    background: var(--surface-container-low);
    border: 1px solid rgba(43, 38, 37, 0.1);
    border-radius: var(--radius); font-family: var(--font-body); font-size: 0.95rem; color: var(--on-surface);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary); border-color: var(--primary); }
textarea { min-height: 100px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }
.radio-card { display: flex; gap: 0.6rem; align-items: flex-start; padding: 0.8rem; border: 1.5px solid var(--outline-variant); border-radius: var(--radius-md); cursor: pointer; }
.radio-card input { width: auto; margin-top: 0.25rem; }
.radio-card.is-checked { border-color: var(--primary); background: rgba(168, 50, 17, 0.05); }
.help { font-size: 0.8rem; color: var(--on-surface-variant); }

/* Tables */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table { width: 100%; border-collapse: collapse; background: var(--surface-container-lowest); border-radius: var(--radius-md); overflow: hidden; }
.table th, .table td { padding: 0.7rem 0.9rem; text-align: left; border-bottom: 1px solid var(--surface-container-high); font-size: 0.9rem; white-space: nowrap; }
.table th { background: var(--surface-container); font-family: var(--font-display); }
.table td.wrap { white-space: normal; }
.table .cell-thumb { width: 44px; height: 44px; flex: 0 0 44px; display: inline-block; vertical-align: middle; margin-right: 0.5rem; border-radius: var(--radius); object-fit: cover; background: var(--surface-container); }

/* Footer */
.site-footer { background: var(--surface-container); margin-top: var(--space-xl); padding: var(--space-xl) 0 var(--space-lg); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--space-xl); }
.footer-grid h4 { margin-bottom: 0.5rem; }
.footer-grid p { margin: 0.2rem 0; color: var(--on-surface-variant); font-size: 0.92rem; }
.footer-brand { display: flex; align-items: center; gap: 0.6rem; margin: 0 0 var(--space-md); font-family: var(--font-display); font-weight: 700; letter-spacing: 0.02em; color: var(--primary); }
.footer-brand img { width: 40px; height: 40px; border-radius: var(--radius); object-fit: cover; }
.footer-social { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: var(--space-md); }
.social-link { display: inline-grid; place-items: center; width: 40px; height: 40px; padding: 0; border: 1px solid var(--outline-variant); border-radius: 50%; background: var(--surface-container-lowest); color: var(--on-surface-variant); cursor: pointer; transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease; }
.social-link:hover, .social-link:focus-visible { background: var(--primary); color: var(--on-primary); border-color: var(--primary); transform: translateY(-2px); }
.social-icon { width: 20px; height: 20px; display: block; fill: currentColor; }
.footer-bottom { margin-top: var(--space-lg); padding-top: var(--space-md); border-top: 1px solid var(--outline-variant); color: var(--on-surface-variant); font-size: 0.85rem; }

/* Cart / checkout */
.summary { background: var(--surface-container-low); border-radius: var(--radius-lg); padding: var(--space-lg); }
.summary-row { display: flex; justify-content: space-between; padding: 0.4rem 0; }
.summary-row.total { font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; color: var(--primary); border-top: 1px solid var(--outline-variant); margin-top: 0.5rem; padding-top: 0.8rem; }
.qty-stepper { display: inline-flex; align-items: center; gap: 0.6rem; }
.qty-stepper button { width: 30px; height: 30px; border-radius: var(--radius-full); border: 1px solid var(--outline-variant); background: #fff; cursor: pointer; font-size: 1rem; }
.layout-split { display: grid; grid-template-columns: 1.6fr 1fr; gap: var(--space-xl); align-items: start; }
.layout-split > * { min-width: 0; }
.empty { text-align: center; padding: var(--space-xl); color: var(--on-surface-variant); }

.auth-card { max-width: 440px; margin: var(--space-xl) auto; background: var(--surface-container-lowest); border-radius: var(--radius-lg); box-shadow: var(--shadow-1); padding: var(--space-xl); }

.toast {
    position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%);
    background: var(--on-surface); color: #fff; padding: 0.7rem 1.2rem; border-radius: var(--radius-full);
    box-shadow: var(--shadow-3); z-index: 100; opacity: 0; pointer-events: none; transition: opacity .2s ease;
}
.toast.show { opacity: 1; }

@media (max-width: 1023px) {
    .container { padding: 0 1.5rem; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
    :root { --margin: 1rem; --gutter: 1rem; }
    .container { padding: 0 1rem; }
    .nav-toggle { display: inline-grid; }
    .nav-icons { margin-left: auto; }
    .nav-links {
        display: none; position: absolute; top: calc(100% + 8px); right: 0; z-index: 60;
        flex-direction: column; justify-content: flex-start; gap: 2px; min-width: 62vw;
        background: var(--surface-container-lowest); border: 1px solid var(--outline-variant);
        border-radius: var(--radius-md); box-shadow: var(--shadow-2); padding: var(--space-sm);
    }
    .nav-links.is-open { display: flex; }
    .nav-links a { padding: 0.5rem 0.7rem; border-radius: var(--radius); }
    .nav-links a:hover { background: var(--surface-container); text-decoration: none; }
    .account-panel { min-width: 62vw; right: 0; }
    .hero { grid-template-columns: 1fr; }
    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
    .layout-split { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }

    /* Responsive tables -> stacked cards */
    .tbl-card thead { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
    .tbl-card, .tbl-card tbody, .tbl-card tr, .tbl-card td { display: block; width: 100%; }
    .tbl-card { background: none; border-radius: 0; overflow: visible; }
    .tbl-card tfoot { display: block; width: 100%; }
    .tbl-card tr {
        background: var(--surface-container-lowest); border: 1px solid var(--outline-variant);
        border-radius: var(--radius-lg); box-shadow: var(--shadow-1);
        padding: var(--space-md); margin-bottom: var(--space-md);
    }
    .tbl-card td {
        display: flex; align-items: center; justify-content: space-between; gap: var(--space-md);
        border: 0; padding: 0.3rem 0; white-space: normal; font-size: 0.95rem;
    }
    .tbl-card td::before { content: attr(data-label); font-weight: 600; color: var(--on-surface-variant); font-size: 0.85rem; }
    .tbl-card td.cell-name {
        display: flex; align-items: center; gap: 0.6rem;
        font-family: var(--font-display); font-weight: 700; font-size: 1.05rem;
        padding: 0 0 0.5rem; margin-bottom: 0.4rem; border-bottom: 1px solid var(--surface-container-high);
    }
    .tbl-card td.cell-name::before { content: none; }
    .tbl-card .cell-thumb { margin-right: 0; }
    .tbl-card td.cell-action { justify-content: flex-end; padding-top: 0.6rem; }
    .tbl-card td.cell-action::before { content: none; }
}

/* PWA install bar */
.install-bar {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.7rem 1rem; padding-bottom: calc(0.7rem + env(safe-area-inset-bottom));
    background: var(--surface-container-lowest);
    border-top: 1px solid var(--outline-variant);
    box-shadow: 0 -6px 20px -8px rgba(31, 27, 26, 0.25);
}
.install-bar[hidden] { display: none; }
.install-bar-icon { width: 40px; height: 40px; flex: 0 0 40px; border-radius: var(--radius); object-fit: cover; }
.install-bar-text { display: flex; flex-direction: column; line-height: 1.25; margin-right: auto; min-width: 0; }
.install-bar-text strong { font-family: var(--font-display); font-size: 0.95rem; }
.install-bar-text span { font-size: 0.8rem; color: var(--on-surface-variant); }
.install-bar .btn { flex: 0 0 auto; padding: 0.5rem 1rem; }
.install-bar-close { flex: 0 0 auto; padding: 0 0.25rem; border: 0; background: none; cursor: pointer; font-size: 1.4rem; line-height: 1; color: var(--on-surface-variant); }
body.has-install-bar { padding-bottom: 5rem; }
@media (max-width: 480px) {
    .install-bar-text span { display: none; }
}