/*
 * MenWear — Premium Fashion Store
 * Design System: Editorial Luxury × Soft Structuralism
 * Font: Plus Jakarta Sans + Playfair Display
 */

/* ===== Design Tokens ===== */
:root {
    /* Brand */
    --color-ink:       #111110;
    --color-ink-2:     #3a3935;
    --color-ink-3:     #6b6960;
    --color-ink-4:     #9b9893;
    --color-gold:      #c9a84c;
    --color-gold-soft: #e8d9a8;
    --color-gold-dim:  rgba(201,168,76,0.12);

    /* Surfaces */
    --color-canvas:    #fafaf8;
    --color-surface:   #ffffff;
    --color-surface-2: #f4f4f1;
    --color-surface-3: #eeede9;
    --color-border:    rgba(17,17,16,0.08);
    --color-border-2:  rgba(17,17,16,0.14);

    /* Semantic */
    --color-success: #2d6a4f;
    --color-danger:  #b91c1c;
    --color-info:    #1e6091;

    /* Shadows — warm-tinted, not harsh black */
    --shadow-xs: 0 1px 3px rgba(17,17,16,0.06);
    --shadow-sm: 0 2px 8px rgba(17,17,16,0.07), 0 1px 2px rgba(17,17,16,0.04);
    --shadow-md: 0 4px 20px rgba(17,17,16,0.09), 0 2px 6px rgba(17,17,16,0.05);
    --shadow-lg: 0 12px 40px rgba(17,17,16,0.12), 0 4px 12px rgba(17,17,16,0.06);
    --shadow-gold: 0 8px 32px rgba(201,168,76,0.25);

    /* Typography */
    --font-body:    'Plus Jakarta Sans', 'Segoe UI', system-ui, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

    /* Scale */
    --radius-sm:  6px;
    --radius-md:  12px;
    --radius-lg:  20px;
    --radius-xl:  28px;
    --radius-pill: 9999px;

    /* Touch targets */
    --touch: 2.75rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.32, 0.72, 0, 1);
    --t-fast:   150ms;
    --t-base:   250ms;
    --t-slow:   400ms;
    --t-reveal: 650ms;
}

/* ===== Reset ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--color-ink);
    background-color: var(--color-canvas);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--t-base) var(--ease-out);
}

ul, ol { list-style: none; }

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

input, textarea, select {
    font-family: inherit;
    border: 1.5px solid var(--color-border-2);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    width: 100%;
    background: var(--color-surface);
    color: var(--color-ink);
    transition: border-color var(--t-base) var(--ease-out),
                box-shadow var(--t-base) var(--ease-out);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--color-ink);
    box-shadow: 0 0 0 3px rgba(17,17,16,0.08);
}

/* ===== Layout ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

.container-fluid {
    width: 100%;
    padding: 0 1.25rem;
}

/* ===== Scroll Reveal ===== */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--t-reveal) var(--ease-out),
                transform var(--t-reveal) var(--ease-out);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.reveal-stagger > * {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity var(--t-reveal) var(--ease-out),
                transform var(--t-reveal) var(--ease-out);
}

.reveal-stagger.is-visible > *:nth-child(1)  { opacity:1; transform:none; transition-delay:  0ms; }
.reveal-stagger.is-visible > *:nth-child(2)  { opacity:1; transform:none; transition-delay: 70ms; }
.reveal-stagger.is-visible > *:nth-child(3)  { opacity:1; transform:none; transition-delay:140ms; }
.reveal-stagger.is-visible > *:nth-child(4)  { opacity:1; transform:none; transition-delay:210ms; }
.reveal-stagger.is-visible > *:nth-child(5)  { opacity:1; transform:none; transition-delay:280ms; }
.reveal-stagger.is-visible > *:nth-child(6)  { opacity:1; transform:none; transition-delay:350ms; }
.reveal-stagger.is-visible > *:nth-child(7)  { opacity:1; transform:none; transition-delay:420ms; }
.reveal-stagger.is-visible > *:nth-child(8)  { opacity:1; transform:none; transition-delay:490ms; }

/* ===== Header ===== */
.header {
    background: rgba(250,250,248,0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow var(--t-base) var(--ease-out);
}

.header.scrolled {
    box-shadow: var(--shadow-sm);
}

.header-top {
    background: var(--color-ink);
    color: rgba(255,255,255,0.75);
    padding: 0.45rem 0;
    font-size: 0.8125rem;
    letter-spacing: 0.01em;
}

.header-top .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.header-top-left {
    display: none;
    align-items: center;
    gap: 0.25rem;
}

.header-top a {
    color: rgba(255,255,255,0.65);
    margin: 0 0.5rem;
    white-space: nowrap;
    transition: color var(--t-fast) var(--ease-out);
}

.header-top a:hover { color: var(--color-gold); }

.header-main {
    padding: 0.875rem 0;
    transition: max-height 0.5s var(--ease-spring),
                padding   0.5s var(--ease-spring),
                opacity   0.4s var(--ease-out);
    max-height: 300px;
    overflow: hidden;
    opacity: 1;
}

.header-main.hide-on-scroll {
    max-height: 0;
    padding: 0;
    opacity: 0;
    pointer-events: none;
}

.header-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.875rem;
}

/* Logo */
.logo {
    font-family: var(--font-display);
    font-size: 1.625rem;
    font-weight: 700;
    color: var(--color-ink);
    letter-spacing: -0.02em;
    flex-shrink: 0;
    line-height: 1;
}

.logo span { color: var(--color-gold); }

/* Search */
.search-bar {
    flex: 1 1 100%;
    order: 3;
    position: relative;
}

.search-bar input {
    padding-right: 3.25rem;
    border-radius: var(--radius-pill);
    background: var(--color-surface-2);
    border-color: transparent;
    min-height: var(--touch);
    font-size: 0.9375rem;
}

.search-bar input:focus {
    background: var(--color-surface);
    border-color: var(--color-ink);
}

.search-bar button {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    min-width: var(--touch);
    padding: 0 1.125rem;
    background: var(--color-ink);
    color: white;
    border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
    transition: background var(--t-base) var(--ease-out);
}

.search-bar button:hover { background: var(--color-ink-2); }

/* Header actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    margin-left: auto;
}

.header-action {
    position: relative;
    padding: 0.5rem;
    color: var(--color-ink-2);
    display: flex;
    align-items: center;
    gap: 0.375rem;
    min-width: var(--touch);
    min-height: var(--touch);
    justify-content: center;
    border-radius: var(--radius-md);
    transition: color var(--t-fast) var(--ease-out),
                background var(--t-fast) var(--ease-out);
}

.header-action:hover {
    color: var(--color-ink);
    background: var(--color-surface-2);
}

.header-action i { font-size: 1.25rem; }

.header-action span:not(.badge-count) { display: none; }

.badge-count {
    position: absolute;
    top: 0.1rem;
    right: 0.1rem;
    background: var(--color-danger);
    color: white;
    font-size: 0.625rem;
    font-weight: 700;
    padding: 0.1rem 0.3rem;
    border-radius: var(--radius-pill);
    line-height: 1.4;
    min-width: 1.1rem;
    text-align: center;
}

/* ===== Navigation ===== */
.nav-main {
    background: var(--color-ink);
    box-shadow: 0 1px 0 rgba(255,255,255,0.06);
    position: sticky;
    top: 0;
    z-index: 900;
}

/* Nav container: flex row — brand | menu | actions | toggle */
.nav-main .container {
    display: flex;
    align-items: center;
}

/* ── Nav brand (logo, hidden by default) ── */
/* ── Nav brand (logo, hidden by default) ── */
.nav-brand {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.02em;
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
    overflow: hidden;
    /* Chiều rộng 0 khi ẩn — đổi instant, KHÔNG transition để tránh clip từng chữ */
    width: 0;
    opacity: 0;
    pointer-events: none;
    /* Chỉ animate opacity, không animate width */
    transition: opacity 0.28s var(--ease-out);
}
.nav-brand span { color: var(--color-gold); }

/* ── Nav compact actions (icons, hidden by default) ── */
.nav-compact-act {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    overflow: hidden;
    width: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.28s var(--ease-out);
}

/* ── Revealed when header-main is hidden ── */
.header.main-hidden .nav-brand {
    width: 130px;   /* đổi instant → opacity fade in mà không clip từng chữ */
    padding-right: 1rem;
    opacity: 1;
    pointer-events: auto;
}
.header.main-hidden .nav-compact-act {
    width: 120px;
    opacity: 1;
    pointer-events: auto;
}

/* ── Icon buttons inside nav ── */
.nav-act-btn {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.72);
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    text-decoration: none;
    position: relative;
    flex-shrink: 0;
    transition: color var(--t-fast), background var(--t-fast);
}
.nav-act-btn:hover {
    color: #fff;
    background: rgba(255,255,255,0.1);
}
.nav-act-btn .badge-count { top: 0; right: 0; }

/* ── Mobile toggle: margin-left auto đẩy sang phải ── */
.mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.8);
    font-size: 1.375rem;
    width: var(--touch);
    height: var(--touch);
    cursor: pointer;
    margin-left: auto;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    transition: color var(--t-fast), background var(--t-fast);
}
.mobile-menu-toggle:hover {
    color: white;
    background: rgba(0,0,0,0.25);
}

/* ── Mobile nav: dropdown tuyệt đối — không nằm trong flex row ── */
@media (max-width: 767.98px) {
    .nav-main {
        position: relative; /* anchor cho nav-menu absolute */
    }
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-ink);
        z-index: 50;
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        transition: max-height 0.35s var(--ease-spring),
                    opacity    0.25s var(--ease-out);
        /* shadow để phân biệt với nội dung bên dưới */
        box-shadow: 0 8px 24px rgba(17,17,16,0.25);
    }
    .nav-menu.show {
        max-height: 60vh;
        overflow-y: auto;
        opacity: 1;
    }
}

.nav-menu {
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-menu li {
    width: 100%;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav-menu li:last-child { border-bottom: none; }

.nav-menu a {
    padding: 0.875rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.625rem;
    color: rgba(255,255,255,0.75);
    font-weight: 500;
    font-size: 0.9375rem;
    position: relative;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    width: 100%;
    min-height: var(--touch);
    transition: color var(--t-base) var(--ease-out),
                background var(--t-base) var(--ease-out),
                padding-left var(--t-base) var(--ease-out);
}

.nav-menu a i {
    font-size: 0.9rem;
    flex-shrink: 0;
    opacity: 0.7;
}

.nav-menu a::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 0; height: 100%;
    background: var(--color-gold);
    transition: width var(--t-base) var(--ease-out);
}

.nav-menu a:hover::before,
.nav-menu a.active::before { width: 3px; }

.nav-menu a:hover,
.nav-menu a.active {
    color: white;
    background: rgba(0,0,0,0.2);
    padding-left: 1.625rem;
}

/* ===== Hero ===== */
.hero-section {
    background: var(--color-canvas);
    border-bottom: 1px solid var(--color-border);
    padding: clamp(3rem, 8vw, 6rem) 0 clamp(3.5rem, 9vw, 7rem);
    position: relative;
    overflow: hidden;
}

/* Ambient radial light — subtle depth */
.hero-section::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    max-width: 700px;
    max-height: 700px;
    background: radial-gradient(ellipse, rgba(201,168,76,0.08) 0%, transparent 65%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    max-width: 780px;
    margin: 0 auto;
    position: relative;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-gold-dim);
    color: var(--color-gold);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.35rem 0.9rem;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(201,168,76,0.25);
    margin-bottom: 1.5rem;
}

.hero-content h1 {
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--color-ink);
    margin-bottom: 1.25rem;
    text-wrap: balance;
}

.hero-content h1 em {
    font-style: italic;
    color: var(--color-gold);
}

.hero-content p {
    font-size: clamp(1.0625rem, 2vw, 1.1875rem);
    color: var(--color-ink-3);
    margin-bottom: 2.25rem;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 0.875rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.625rem;
    min-height: var(--touch);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    font-family: var(--font-body);
    cursor: pointer;
    border: 1.5px solid transparent;
    white-space: nowrap;
    transition: background var(--t-base) var(--ease-out),
                color var(--t-base) var(--ease-out),
                border-color var(--t-base) var(--ease-out),
                box-shadow var(--t-base) var(--ease-out),
                transform var(--t-fast) var(--ease-out);
    letter-spacing: 0.01em;
}

.btn:active { transform: scale(0.98); }

.btn-primary {
    background: var(--color-ink);
    color: white;
    border-color: var(--color-ink);
}

.btn-primary:hover {
    background: var(--color-ink-2);
    border-color: var(--color-ink-2);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-accent {
    background: var(--color-gold);
    color: var(--color-ink);
    border-color: var(--color-gold);
}

.btn-accent:hover {
    background: #b8942e;
    border-color: #b8942e;
    box-shadow: var(--shadow-gold);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border-color: var(--color-border-2);
    color: var(--color-ink);
}

.btn-outline:hover {
    background: var(--color-surface-2);
    border-color: var(--color-ink);
}

.btn-outline.active-wishlist,
.action-btn.btn-wishlist.active {
    background: #fee2e2;
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.btn-outline.active-wishlist:hover,
.action-btn.btn-wishlist.active:hover {
    background: #fecaca;
}

.btn-sm {
    padding: 0.4375rem 1rem;
    font-size: 0.875rem;
    min-height: 2.25rem;
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    border-radius: var(--radius-lg);
}

/* ===== Section Titles ===== */
.section-title {
    text-align: center;
    margin-bottom: var(--space-10);
}

.section-title h2 {
    font-family: var(--font-display);
    font-size: clamp(1.625rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-ink);
    letter-spacing: -0.025em;
    line-height: 1.2;
    margin-bottom: 0.625rem;
    position: relative;
    display: inline-block;
    text-wrap: balance;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 2.5rem;
    height: 2px;
    background: var(--color-gold);
    border-radius: 2px;
}

.section-title p {
    color: var(--color-ink-3);
    font-size: clamp(0.9375rem, 1.8vw, 1.0625rem);
    margin-top: 1.25rem;
    line-height: 1.6;
}

/* ===== Page Sections ===== */
.page-section { padding: clamp(3rem, 7vw, 5rem) 0; }

/* ===== Product Grid ===== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

/* Product Card */
.product-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: box-shadow var(--t-slow) var(--ease-out),
                transform var(--t-slow) var(--ease-out),
                border-color var(--t-slow) var(--ease-out);
    position: relative;
}

.product-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
    border-color: rgba(17,17,16,0.12);
}

.product-image {
    position: relative;
    overflow: hidden;
    padding-top: 125%;
    background: var(--color-surface-2);
}

.product-image img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease-out);
}

.product-card:hover .product-image img {
    transform: scale(1.07);
}

.product-badges {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-sm);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-sale       { background: #fee2e2; color: var(--color-danger); }
.badge-new        { background: #dbeafe; color: #1d4ed8; }
.badge-bestseller { background: var(--color-gold-dim); color: #92670f; border: 1px solid rgba(201,168,76,0.3); }

.product-actions {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    opacity: 0;
    transform: translateX(0.75rem);
    transition: opacity var(--t-base) var(--ease-out),
                transform var(--t-base) var(--ease-out);
}

.product-card:hover .product-actions {
    opacity: 1;
    transform: translateX(0);
}

.action-btn {
    width: var(--touch);
    height: var(--touch);
    border-radius: 50%;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    color: var(--color-ink-2);
    cursor: pointer;
    font-size: 0.9375rem;
    transition: background var(--t-fast), color var(--t-fast),
                box-shadow var(--t-fast), transform var(--t-fast);
}

.action-btn:hover {
    background: var(--color-ink);
    color: white;
    border-color: var(--color-ink);
    transform: scale(1.05);
}

.product-info { padding: 1rem; }

.product-category {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--color-ink-4);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.375rem;
}

.product-name {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-ink);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
    transition: color var(--t-fast);
}

.product-name:hover { color: var(--color-gold); }

.product-rating {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    margin-bottom: 0.5rem;
}

.stars       { color: var(--color-gold); font-size: 0.75rem; }
.rating-count { font-size: 0.75rem; color: var(--color-ink-4); }

.product-price {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.current-price   { font-size: 1.0625rem; font-weight: 700; color: var(--color-ink); }
.original-price  { font-size: 0.875rem; color: var(--color-ink-4); text-decoration: line-through; }
.discount-percent {
    background: #fee2e2;
    color: var(--color-danger);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-size: 0.6875rem;
    font-weight: 700;
}

.product-footer {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.add-to-cart {
    flex: 1;
    padding: 0.625rem 0.75rem;
    min-height: var(--touch);
    background: var(--color-ink);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.8125rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    transition: background var(--t-fast), transform var(--t-fast);
}

.add-to-cart:hover {
    background: var(--color-gold);
    color: var(--color-ink);
    transform: translateY(-1px);
}

/* ===== Category Grid ===== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.category-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 1.5rem var(--space-4);
    border-radius: var(--radius-lg);
    text-align: center;
    display: block;
    transition: box-shadow var(--t-slow) var(--ease-out),
                transform var(--t-slow) var(--ease-out),
                border-color var(--t-slow) var(--ease-out);
}

.category-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: var(--color-border-2);
}

.category-card__icon {
    font-size: 2rem;
    color: var(--color-gold);
    margin-bottom: 0.75rem;
    display: block;
    transition: transform var(--t-base) var(--ease-out);
}

.category-card:hover .category-card__icon { transform: scale(1.12) translateY(-2px); }

.category-card__name {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--color-ink);
}

.category-card__desc {
    color: var(--color-ink-3);
    font-size: 0.8125rem;
    line-height: 1.45;
}

/* ===== Feature Grid ===== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.feature-box {
    padding: 1.5rem var(--space-4);
    text-align: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: box-shadow var(--t-slow) var(--ease-out),
                transform var(--t-slow) var(--ease-out);
}

.feature-box:hover {
    box-shadow: var(--shadow-sm);
    transform: translateY(-3px);
}

.feature-box__icon {
    font-size: 2rem;
    color: var(--color-gold);
    margin-bottom: 0.875rem;
    display: block;
    transition: transform var(--t-base) var(--ease-out);
}

.feature-box:hover .feature-box__icon { transform: scale(1.1); }

.feature-box__title {
    font-size: 0.9375rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
    color: var(--color-ink);
}

.feature-box__desc {
    color: var(--color-ink-3);
    font-size: 0.875rem;
    line-height: 1.55;
}

/* ===== Filters Sidebar ===== */
.filters-sidebar {
    background: var(--color-surface);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.filter-group {
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-8);
    border-bottom: 1px solid var(--color-border);
}

.filter-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.filter-title {
    font-size: 0.9375rem;
    font-weight: 700;
    margin-bottom: var(--space-4);
    color: var(--color-ink);
    letter-spacing: -0.01em;
}

.filter-options label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.4375rem 0;
    cursor: pointer;
    color: var(--color-ink-2);
    transition: color var(--t-fast);
    min-height: 2.25rem;
    font-size: 0.9375rem;
}

.filter-options label:hover { color: var(--color-ink); }

.filter-options input[type="checkbox"],
.filter-options input[type="radio"] {
    width: auto;
    accent-color: var(--color-ink);
}

.price-range { padding: var(--space-4) 0; }

.price-inputs {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-4);
}

.price-inputs input { flex: 1; }

/* ===== Footer ===== */
.footer {
    background: var(--color-ink);
    color: rgba(255,255,255,0.75);
    padding: var(--space-16) 0 var(--space-6);
    margin-top: var(--space-16);
    position: relative;
}

/* Subtle top gradient divider */
.footer::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(201,168,76,0.4) 50%, transparent);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-10);
    margin-bottom: var(--space-10);
}

.footer-section h3 {
    font-size: 0.8125rem;
    font-weight: 700;
    margin-bottom: var(--space-5);
    color: white;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.footer-section p {
    font-size: 0.9rem;
    line-height: 1.7;
    color: rgba(255,255,255,0.55);
}

.footer-section ul li {
    margin-bottom: 0.625rem;
}

.footer-section ul li i {
    width: 1.125rem;
    flex-shrink: 0;
    color: var(--color-gold);
    opacity: 0.8;
}

.footer-section a {
    color: rgba(255,255,255,0.6);
    font-size: 0.9375rem;
    transition: color var(--t-fast);
}

.footer-section a:hover { color: var(--color-gold); }

.social-links {
    display: flex;
    gap: 0.625rem;
    margin-top: var(--space-5);
    flex-wrap: wrap;
}

.social-link {
    width: var(--touch);
    height: var(--touch);
    border-radius: var(--radius-md);
    background: rgba(0,0,0,0.25);
    border: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.85);
    font-size: 1rem;
    flex-shrink: 0;
    transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}

.social-link:hover {
    background: var(--color-gold);
    color: var(--color-ink);
    border-color: var(--color-gold);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: var(--space-5);
    text-align: center;
    color: rgba(255,255,255,0.4);
    font-size: 0.8125rem;
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 2.75rem;
    height: 2.75rem;
    background: var(--color-ink);
    border: 1px solid rgba(255,255,255,0.15);
    color: white;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    box-shadow: var(--shadow-md);
    transition: background var(--t-base), box-shadow var(--t-base),
                opacity var(--t-base), visibility var(--t-base),
                transform var(--t-base) var(--ease-spring);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(0.75rem);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-gold);
    color: var(--color-ink);
    box-shadow: var(--shadow-gold);
    transform: translateY(-2px);
}

/* ===== Utilities ===== */
.text-center   { text-align: center; }
.text-left     { text-align: left; }
.text-right    { text-align: right; }

.mt-1 { margin-top: var(--space-2); }
.mt-2 { margin-top: var(--space-4); }
.mt-3 { margin-top: var(--space-6); }
.mt-4 { margin-top: var(--space-8); }
.mt-5 { margin-top: var(--space-12); }

.mb-1 { margin-bottom: var(--space-2); }
.mb-2 { margin-bottom: var(--space-4); }
.mb-3 { margin-bottom: var(--space-6); }
.mb-4 { margin-bottom: var(--space-8); }
.mb-5 { margin-bottom: var(--space-12); }

.p-1 { padding: var(--space-2); }
.p-2 { padding: var(--space-4); }
.p-3 { padding: var(--space-6); }
.p-4 { padding: var(--space-8); }
.p-5 { padding: var(--space-12); }

.d-flex         { display: flex; }
.align-center   { align-items: center; }
.justify-center { justify-content: center; }
.justify-between{ justify-content: space-between; }
.gap-1 { gap: var(--space-2); }
.gap-2 { gap: var(--space-4); }
.gap-3 { gap: var(--space-6); }

.fw-bold     { font-weight: 700; }
.fw-semibold { font-weight: 600; }
.fw-normal   { font-weight: 400; }

.text-ink      { color: var(--color-ink); }
.text-ink-3    { color: var(--color-ink-3); }
.text-gold     { color: var(--color-gold); }
.text-success  { color: var(--color-success); }
.text-danger   { color: var(--color-danger); }

/* Legacy aliases */
.text-primary   { color: var(--color-ink); }
.text-secondary { color: var(--color-ink-3); }
.text-accent    { color: var(--color-gold); }

.bg-light { background-color: var(--color-surface-2); }
.bg-white { background-color: var(--color-surface); }

/* ===== Responsive — Mobile-First ===== */

/* ≥ 480px */
@media (min-width: 480px) {
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
        gap: var(--space-5);
    }

    .product-info       { padding: 1.125rem; }
    .product-name       { font-size: 1rem; }
    .current-price      { font-size: 1.125rem; }
    .badge              { font-size: 0.75rem; }
}

/* ≥ 640px */
@media (min-width: 640px) {
    .header-top-left { display: flex; align-items: center; }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }

    .category-grid {
        grid-template-columns: repeat(auto-fit, minmax(175px, 1fr));
        gap: var(--space-5);
    }

    .feature-grid {
        grid-template-columns: repeat(auto-fit, minmax(195px, 1fr));
        gap: var(--space-6);
    }

    .category-card        { padding: 2rem var(--space-6); }
    .category-card__icon  { font-size: 2.5rem; }
    .category-card__name  { font-size: 1.0625rem; }
    .feature-box          { padding: 2rem; }
    .feature-box__icon    { font-size: 2.5rem; }
    .feature-box__title   { font-size: 1.0625rem; }
}

/* ≥ 768px */
@media (min-width: 768px) {
    .header-main   { padding: 1.125rem 0; }
    .logo          { font-size: 1.875rem; }

    .header-content {
        flex-wrap: nowrap;
        gap: var(--space-8);
    }

    .search-bar {
        flex: 1;
        order: 0;
        max-width: 480px;
    }

    .header-action span:not(.badge-count) { display: inline; }

    .mobile-menu-toggle { display: none; }

    .nav-menu {
        flex: 1;
        flex-direction: row;
        justify-content: center;
        align-items: center;
    }

    .nav-menu li { width: auto; border-bottom: none; }

    .nav-menu a {
        padding: 1rem 1.5rem;
        justify-content: center;
        width: auto;
    }

    /* Desktop: top accent bar */
    .nav-menu a::before {
        top: auto;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
    }

    .nav-menu a:hover::before,
    .nav-menu a.active::before { width: 60%; }

    .nav-menu a:hover,
    .nav-menu a.active { padding-left: 1.5rem; }

    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
        gap: var(--space-6);
    }

    .product-info       { padding: 1.125rem; }
    .product-name       { font-size: 1.0625rem; }
    .current-price      { font-size: 1.25rem; }
}

/* ≥ 1024px */
@media (min-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(265px, 1fr));
        gap: var(--space-8);
    }

    .nav-menu a {
        padding: 1.125rem 1.875rem;
        font-size: 0.875rem;
    }

    .footer-content { grid-template-columns: repeat(4, 1fr); }

    .product-info       { padding: 1.25rem; }
    .product-name       { font-size: 1.0625rem; }
    .current-price      { font-size: 1.375rem; }

    .back-to-top { bottom: 2rem; right: 2rem; }
}

/* ≥ 1200px */
@media (min-width: 1200px) {
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}