:root {
    --bg: #f0f2f5;
    --surface: #ffffff;
    --text: #1a1d26;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --accent: #10b981;
    --accent-hover: #059669;
    --warning: #f59e0b;
    --danger: #ef4444;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 4px 24px rgba(26, 29, 38, 0.08);
    --shadow-hover: 0 12px 40px rgba(26, 29, 38, 0.12);
    --container: 1280px;
    --font: 'Inter', system-ui, sans-serif;
    --transition: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
ul { list-style: none; }
.container { width: min(100% - 2rem, var(--container)); margin-inline: auto; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.65rem 1.25rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
    white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35); }
.btn-accent:hover { background: var(--accent-hover); }
.btn-outline { background: var(--surface); border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 0.5rem 1rem; font-size: 0.82rem; }
.btn-lg { padding: 1rem 1.75rem; font-size: 1rem; }
.btn-block { width: 100%; }

/* Header */
.site-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 0 rgba(0,0,0,0.04);
}
.header-top {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 1.25rem;
    padding: 0.85rem 0;
}
.logo {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}
.logo-mark {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    color: #fff;
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: 1.15rem;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-text strong { font-size: 1.2rem; letter-spacing: -0.02em; }
.logo-text small { font-size: 0.72rem; color: var(--text-muted); font-weight: 500; }

.header-search { min-width: 0; }
.search-form {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    align-items: center;
    background: var(--bg);
    border: 2px solid transparent;
    border-radius: 14px;
    padding: 0.35rem 0.35rem 0.35rem 0.85rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.search-form:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.12);
    background: var(--surface);
}
.search-icon { color: var(--text-muted); flex-shrink: 0; }
.search-form input[type="search"] {
    border: none;
    background: transparent;
    padding: 0.5rem;
    min-width: 0;
    outline: none;
}
.search-form select {
    border: none;
    background: var(--surface);
    border-radius: 8px;
    padding: 0.45rem 0.6rem;
    font-size: 0.82rem;
    color: var(--text-muted);
    max-width: 140px;
}
.btn-search { border-radius: 10px; padding: 0.55rem 1.1rem; }

.header-actions { display: flex; align-items: center; gap: 0.5rem; }
.header-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.1rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.35rem 0.6rem;
    border-radius: 10px;
    color: var(--text-muted);
    position: relative;
    font-size: 0.68rem;
    font-weight: 600;
}
.header-action:hover { background: var(--bg); color: var(--text); }
.action-count {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--danger);
    color: #fff;
    font-size: 0.65rem;
    min-width: 16px;
    height: 16px;
    border-radius: 999px;
    display: grid;
    place-items: center;
    padding: 0 4px;
}
.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 0.5rem; }
.menu-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; }

.header-sub {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding-bottom: 0.65rem;
    border-top: 1px solid var(--border);
    padding-top: 0.5rem;
}
.city-picker {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--bg);
    border: none;
    border-radius: 999px;
    padding: 0.4rem 0.85rem;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    color: var(--primary);
}
.header-nav { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.header-nav a { font-size: 0.88rem; font-weight: 500; color: var(--text-muted); }
.header-nav a:hover { color: var(--primary); }

/* Hero board */
.hero-board {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4338ca 100%);
    color: #fff;
    padding: 2.5rem 0;
}
.hero-board-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}
.hero-copy h1 {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
}
.hero-copy h1 span { color: #a5f3fc; }
.hero-copy p { opacity: 0.85; font-size: 1rem; max-width: 480px; }
.hero-stats { display: flex; gap: 2rem; }
.hero-stats div { text-align: center; }
.hero-stats strong { display: block; font-size: 1.75rem; font-weight: 800; }
.hero-stats span { font-size: 0.78rem; opacity: 0.7; }

/* Promo */
.promo-row { padding: 1.25rem 0; }
.promo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.promo-card {
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    color: #fff;
    cursor: pointer;
    transition: transform var(--transition);
}
.promo-card:hover { transform: translateY(-3px); }
.promo-card h3 { font-size: 1.05rem; margin-bottom: 0.35rem; }
.promo-card p { font-size: 0.85rem; opacity: 0.9; margin-bottom: 0.5rem; }
.promo-cta { font-size: 0.82rem; font-weight: 700; opacity: 0.95; }

/* Categories */
.categories-section { padding: 2rem 0 1rem; }
.section-head-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.25rem; }
.section-head-row h2 { font-size: 1.35rem; font-weight: 700; }
.link-more { color: var(--primary); font-weight: 600; font-size: 0.9rem; }
.categories-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.75rem;
}
.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 0.5rem;
    background: var(--surface);
    border: 2px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.category-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.category-card.active { border-color: var(--cat-color, var(--primary)); box-shadow: 0 0 0 3px color-mix(in srgb, var(--cat-color, var(--primary)) 20%, transparent); }
.category-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: color-mix(in srgb, var(--cat-color, var(--primary)) 12%, white);
    color: var(--cat-color, var(--primary));
}
.category-name { font-size: 0.82rem; font-weight: 600; text-align: center; }

/* Board layout */
.board-section { padding: 1.5rem 0 3rem; }
.board-layout { display: grid; grid-template-columns: 260px 1fr; gap: 1.5rem; align-items: start; }
.filter-panel {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.25rem;
    border: 1px solid var(--border);
    position: sticky;
    top: 140px;
}
.filter-panel h3 { display: flex; align-items: center; gap: 0.4rem; font-size: 1rem; margin-bottom: 1rem; }
.field { display: block; margin-bottom: 0.85rem; }
.field span { display: block; font-size: 0.78rem; font-weight: 600; color: var(--text-muted); margin-bottom: 0.3rem; }
.field input, .field select {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
}
.checkbox-label { display: flex; align-items: center; gap: 0.5rem; font-size: 0.88rem; margin-bottom: 0.5rem; cursor: pointer; }
.sidebar-promo {
    margin-top: 1rem;
    padding: 1rem;
    background: linear-gradient(135deg, #ecfdf5, #d1fae5);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}
.sidebar-promo strong { display: block; margin-bottom: 0.35rem; color: #065f46; }
.sidebar-promo p { color: #047857; margin-bottom: 0.75rem; }

.board-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}
.toolbar-left h2 { font-size: 1.25rem; font-weight: 700; }
.results-count { font-size: 0.85rem; color: var(--text-muted); }
.toolbar-right { display: flex; align-items: center; gap: 0.75rem; }
.toolbar-right select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    font-size: 0.85rem;
}
.view-toggle { display: flex; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.view-btn {
    background: var(--surface);
    border: none;
    padding: 0.5rem 0.65rem;
    cursor: pointer;
    color: var(--text-muted);
}
.view-btn.active { background: var(--primary); color: #fff; }

.category-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.25rem; }
.chip {
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    color: var(--text-muted);
    transition: all var(--transition);
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* Ad cards */
.ads-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}
.ads-grid.ads-list { grid-template-columns: 1fr; }
.ads-list .ad-card { display: grid; grid-template-columns: 200px 1fr; }
.ads-list .ad-image { aspect-ratio: auto; height: 100%; min-height: 140px; }

.ad-card {
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
}
.ad-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.ad-card[hidden] { display: none !important; }
.ad-image { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--bg); }
.ad-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.35s ease; }
.ad-card:hover .ad-image img { transform: scale(1.04); }
.ad-badges { position: absolute; top: 0.5rem; left: 0.5rem; display: flex; flex-wrap: wrap; gap: 0.3rem; }
.ad-badge {
    font-size: 0.65rem;
    font-weight: 700;
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.ad-badge--top { background: var(--warning); color: #fff; }
.ad-badge--premium { background: linear-gradient(135deg, #8b5cf6, #6366f1); color: #fff; }
.ad-badge--verified { background: var(--accent); color: #fff; }
.ad-fav {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.92);
    border: none;
    cursor: pointer;
    display: grid;
    place-items: center;
    color: var(--text-muted);
    box-shadow: var(--shadow);
    transition: color var(--transition), transform var(--transition);
}
.ad-fav:hover { transform: scale(1.08); }
.ad-fav.active { color: var(--danger); }
.ad-fav.active svg { fill: var(--danger); stroke: var(--danger); }
.ad-body { padding: 0.85rem 1rem 1rem; }
.ad-price { font-size: 1.2rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 0.25rem; }
.ad-title {
    font-size: 0.92rem;
    font-weight: 500;
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 0.5rem;
    min-height: 2.5em;
}
.ad-meta {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.78rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.empty-state { text-align: center; padding: 3rem; color: var(--text-muted); }
.load-more { display: block; margin: 2rem auto 0; }

/* Post ad / delivery */
.post-ad-section {
    background: linear-gradient(135deg, #ecfdf5, #f0fdf4);
    padding: 3rem 0;
    border-top: 1px solid var(--border);
}
.post-ad-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}
.post-ad-copy h2 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.post-ad-copy p { color: var(--text-muted); margin-bottom: 1rem; }
.post-ad-copy li { margin-bottom: 0.35rem; font-size: 0.92rem; }

.delivery-section { padding: 2.5rem 0; }
.delivery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.delivery-grid article {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}
.delivery-grid h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.delivery-grid p { font-size: 0.88rem; color: var(--text-muted); }

.business-section { padding-bottom: 3rem; }
.business-banner {
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    color: #fff;
    border-radius: var(--radius);
    padding: 2.5rem;
    text-align: center;
}
.business-banner h2 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.business-banner p { opacity: 0.9; margin-bottom: 1.25rem; }
.business-banner .btn-primary { background: #fff; color: var(--primary); }

/* Footer */
.site-footer { background: #111827; color: #e5e7eb; padding: 3rem 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem; padding-bottom: 2rem; }
.footer-brand p { opacity: 0.7; font-size: 0.88rem; margin-top: 0.75rem; max-width: 280px; }
.footer-grid h4 { font-size: 0.85rem; margin-bottom: 0.75rem; color: #fff; }
.footer-grid li { margin-bottom: 0.4rem; font-size: 0.88rem; opacity: 0.75; }
.footer-grid a:hover { opacity: 1; color: #a5b4fc; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 1rem 0; font-size: 0.82rem; opacity: 0.55; }

/* Modals */
.modal { position: fixed; inset: 0; z-index: 200; display: grid; place-items: center; padding: 1rem; }
.modal[hidden] { display: none !important; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(17, 24, 39, 0.65); backdrop-filter: blur(4px); cursor: pointer; }
.modal-dialog {
    position: relative;
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.75rem;
    width: min(100%, 440px);
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-hover);
}
.modal-wide { width: min(100%, 560px); }
.modal-listing { width: min(100%, 900px); padding: 0; overflow: hidden; }
.modal-listing-grid { display: grid; grid-template-columns: 1.1fr 1fr; }
.modal-listing-media img { width: 100%; height: 100%; object-fit: cover; min-height: 320px; }
.modal-listing-body { padding: 1.5rem; }
.modal-close {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    z-index: 2;
    background: var(--surface);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: grid;
    place-items: center;
    box-shadow: var(--shadow);
}
.modal-listing .modal-close { top: 1rem; right: 1rem; }
.modal-price { font-size: 1.75rem; font-weight: 800; margin: 0.5rem 0; }
.modal-meta { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1rem; }
.modal-desc { font-size: 0.92rem; line-height: 1.6; margin-bottom: 1rem; }
.modal-seller { font-size: 0.88rem; margin-bottom: 1.25rem; padding: 0.75rem; background: var(--bg); border-radius: var(--radius-sm); }
.modal-actions { display: grid; gap: 0.5rem; }
.modal-sub { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 1rem; }
body.modal-open { overflow: hidden; }

.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(120%);
    z-index: 300;
    background: #111827;
    color: #fff;
    padding: 0.85rem 1.5rem;
    border-radius: 12px;
    font-size: 0.9rem;
    box-shadow: var(--shadow-hover);
    transition: transform 0.35s ease;
}
.toast.show { transform: translateX(-50%) translateY(0); }

/* Responsive */
@media (max-width: 1100px) {
    .ads-grid { grid-template-columns: repeat(2, 1fr); }
    .categories-grid { grid-template-columns: repeat(5, 1fr); }
    .promo-grid { grid-template-columns: 1fr; }
}

@media (max-width: 920px) {
    .header-top { grid-template-columns: auto 1fr auto; }
    .header-search { grid-column: 1 / -1; order: 3; }
    .header-actions .action-label { display: none; }
    .header-actions .btn-accent span { display: none; }
    .menu-toggle { display: flex; }
    .header-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--surface);
        flex-direction: column;
        padding: 1rem;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
    }
    .header-nav.open { display: flex; }
    .header-sub { flex-wrap: wrap; }
    .board-layout { grid-template-columns: 1fr; }
    .filter-panel { position: static; }
    .modal-listing-grid { grid-template-columns: 1fr; }
    .delivery-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    .ads-grid { grid-template-columns: 1fr; }
    .categories-grid { grid-template-columns: repeat(3, 1fr); }
    .hero-stats { width: 100%; justify-content: space-between; }
    .search-form { grid-template-columns: auto 1fr; }
    .search-form select, .btn-search { display: none; }
    .post-ad-inner { flex-direction: column; text-align: center; }
    .footer-grid { grid-template-columns: 1fr; }
}