:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --accent: #f97316;
    --success: #16a34a;
    --danger: #dc2626;
    --text: #111827;
    --muted: #6b7280;
    --line: #e5e7eb;
    --bg: #f8fafc;
    --card: #ffffff;
    --shadow: 0 18px 45px rgba(15, 23, 42, .08);
    --radius: 22px;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--text); background: var(--bg); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }

.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.9); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 74px; gap: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 900; }
.brand-mark { width: 38px; height: 38px; border-radius: 14px; background: linear-gradient(135deg, var(--primary), var(--accent)); display: grid; place-items: center; color: #fff; font-weight: 900; }
.nav-links { display: flex; gap: 22px; color: #374151; font-weight: 650; }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.lang { font-size: 13px; font-weight: 800; color: var(--muted); }
.menu-btn { display: none; border: 0; background: #fff; font-size: 24px; }

.btn { display: inline-flex; align-items: center; justify-content: center; border: 0; border-radius: 14px; padding: 12px 18px; font-weight: 800; cursor: pointer; transition: .18s ease; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 12px 24px rgba(37, 99, 235, .25); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-light { background: #fff; border: 1px solid var(--line); color: var(--text); }
.btn.full { width: 100%; }
.badge { display: inline-flex; background: #eef2ff; color: var(--primary); border: 1px solid #dbeafe; padding: 8px 12px; border-radius: 999px; font-weight: 800; font-size: 13px; }
.badge.premium { background: #fff7ed; color: var(--accent); border-color: #fed7aa; }

.hero, .page-hero { padding: 74px 0; background: radial-gradient(circle at top left, #dbeafe, transparent 35%), linear-gradient(180deg, #fff, var(--bg)); }
.page-hero.small { padding: 48px 0; }
.hero-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 32px; align-items: center; }
h1 { font-size: clamp(34px, 6vw, 64px); line-height: .98; margin: 16px 0; letter-spacing: -0.04em; }
h2 { font-size: clamp(26px, 4vw, 38px); letter-spacing: -0.03em; margin: 0 0 10px; }
p { color: var(--muted); line-height: 1.7; }
.hero p, .page-hero p { font-size: 18px; max-width: 760px; }
.search-box { display: flex; gap: 10px; background: #fff; border: 1px solid var(--line); padding: 8px; border-radius: 18px; box-shadow: var(--shadow); max-width: 760px; margin: 24px 0; }
.search-box input { flex: 1; border: 0; outline: 0; padding: 14px; font-size: 16px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-card, .details-card, .gallery-card, .auth-card, .panel, .cta-card, .empty-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.hero-card { padding: 28px; }
.hero-card li { margin: 14px 0; color: #374151; font-weight: 700; }

.section { padding: 56px 0; }
.muted-section { background: #f1f5f9; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.section-head a { color: var(--primary); font-weight: 800; }
.category-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.category-card { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 18px; display: grid; gap: 10px; min-height: 120px; transition: .18s ease; }
.category-card:hover, .listing-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.category-card span { font-size: 28px; }

.listing-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.listing-card { background: #fff; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; transition: .18s ease; }
.listing-image { aspect-ratio: 4/3; background: #e5e7eb; position: relative; }
.listing-image img { width: 100%; height: 100%; object-fit: cover; }
.listing-image span { position: absolute; left: 10px; top: 10px; background: #fff7ed; color: var(--accent); padding: 6px 10px; border-radius: 999px; font-weight: 900; font-size: 12px; }
.listing-body { padding: 14px; }
.listing-body h3 { margin: 0 0 10px; font-size: 17px; line-height: 1.35; }
.listing-price { color: var(--primary); font-weight: 900; font-size: 18px; }
.listing-body p { margin: 8px 0 0; }
.empty-card { padding: 24px; color: var(--muted); }

.cta-card { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 30px; }
.site-footer { padding: 48px 0; background: #0f172a; color: #e5e7eb; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 24px; }
.footer-grid p, .footer-grid a { color: #cbd5e1; display: block; margin: 8px 0; }
.footer-brand { margin-bottom: 12px; }

.auth-section { min-height: 70vh; display: grid; place-items: center; padding: 40px 16px; }
.auth-card { width: min(460px, 100%); padding: 28px; }
.auth-card.center { text-align: center; }
.auth-card label { display: block; margin: 14px 0 6px; font-weight: 800; }
.auth-card input, .lead-form input, .lead-form textarea { width: 100%; border: 1px solid var(--line); border-radius: 14px; padding: 13px 14px; font: inherit; outline: none; }
.auth-card button { margin-top: 18px; }
.flash { margin-top: 16px; padding: 14px 16px; border-radius: 14px; font-weight: 800; }
.flash.success { background: #dcfce7; color: #166534; }
.flash.error { background: #fee2e2; color: #991b1b; }

.app-shell { display: grid; grid-template-columns: 280px 1fr; min-height: 100vh; }
.sidebar { background: #111827; color: #fff; padding: 22px; display: flex; flex-direction: column; gap: 8px; }
.sidebar a { padding: 12px 14px; border-radius: 14px; color: #e5e7eb; font-weight: 700; }
.sidebar a:hover { background: rgba(255,255,255,.08); }
.app-main { padding: 34px; }
.page-title { margin-bottom: 24px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat-card { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 22px; box-shadow: var(--shadow); }
.stat-card span { color: var(--muted); display: block; margin-bottom: 10px; }
.stat-card strong { font-size: 32px; }
.mt { margin-top: 24px; }
.panel { padding: 24px; }

.listing-page { display: grid; grid-template-columns: 1fr 420px; gap: 24px; align-items: start; }
.gallery-card { overflow: hidden; }
.gallery-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.details-card { padding: 26px; }
.price { font-size: 32px; color: var(--primary); font-weight: 900; margin: 10px 0; }
.description { color: #374151; line-height: 1.8; margin: 22px 0; }
.seller-box { background: #f8fafc; border: 1px solid var(--line); padding: 14px; border-radius: 14px; margin-bottom: 18px; }
.lead-form { display: grid; gap: 10px; }

.pricing-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.price-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.price-card.featured { border-color: var(--primary); transform: translateY(-4px); }
.plan-price { font-size: 26px; color: var(--primary); font-weight: 900; margin: 12px 0; }
.contact-card { margin-top: 20px; background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 20px; }

@media (max-width: 980px) {
    .hero-grid, .listing-page, .footer-grid { grid-template-columns: 1fr; }
    .listing-grid, .pricing-grid { grid-template-columns: repeat(2, 1fr); }
    .category-grid { grid-template-columns: repeat(3, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .app-shell { grid-template-columns: 1fr; }
    .sidebar { position: static; }
    .nav-links { display: none; position: absolute; left: 16px; right: 16px; top: 72px; background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 16px; box-shadow: var(--shadow); flex-direction: column; }
    .nav-links.open { display: flex; }
    .menu-btn { display: inline-flex; }
}

@media (max-width: 640px) {
    .nav-actions .btn-light, .nav-actions .btn-primary, .lang { display: none; }
    .search-box { flex-direction: column; }
    .listing-grid, .pricing-grid, .category-grid, .stats-grid { grid-template-columns: 1fr; }
    .cta-card { flex-direction: column; align-items: flex-start; }
    .app-main { padding: 20px; }
}

/* MVP 0.2 listings workflow */
.split-title { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.action-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 16px; }
.filter-bar { display: flex; gap: 12px; align-items: center; margin: 0 0 18px; }
.filter-bar input, .filter-bar select { border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; font: inherit; background: #fff; min-width: 220px; }
.table-card { background: #fff; border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow); overflow-x: auto; }
.admin-table { width: 100%; border-collapse: collapse; min-width: 760px; }
.admin-table th, .admin-table td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
.admin-table th { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .05em; background: #f8fafc; }
.mini-listing { display: flex; gap: 12px; align-items: center; }
.mini-listing img { width: 62px; height: 50px; border-radius: 12px; object-fit: cover; background: #e5e7eb; }
.mini-listing span { color: var(--muted); display: block; margin-top: 4px; font-size: 13px; }
.status-pill { display: inline-flex; align-items: center; padding: 7px 10px; border-radius: 999px; font-size: 12px; font-weight: 900; background: #f1f5f9; color: #475569; }
.status-published { background: #dcfce7; color: #166534; }
.status-pending { background: #fef3c7; color: #92400e; }
.status-rejected { background: #fee2e2; color: #991b1b; }
.status-archived { background: #e5e7eb; color: #374151; }
.row-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row-actions a, .row-actions button { border: 0; background: #eff6ff; color: var(--primary); border-radius: 999px; padding: 8px 11px; font-weight: 900; cursor: pointer; font: inherit; font-size: 13px; }
.row-actions button:hover, .row-actions a:hover { filter: brightness(.97); }
.form-errors { background: #fee2e2; color: #991b1b; border-radius: 16px; padding: 14px 16px; margin-bottom: 16px; font-weight: 800; }
.listing-form label { display: block; margin: 16px 0 7px; font-weight: 900; }
.listing-form input, .listing-form select, .listing-form textarea, .stack-form textarea { width: 100%; border: 1px solid var(--line); border-radius: 14px; padding: 13px 14px; font: inherit; background: #fff; outline: none; }
.listing-form textarea, .stack-form textarea { resize: vertical; }
.form-grid { display: grid; grid-template-columns: 1fr 360px; gap: 24px; align-items: start; }
.form-main, .form-side { min-width: 0; }
.two-cols { display: grid; grid-template-columns: 1fr 110px; gap: 12px; }
.full { width: 100%; justify-content: center; }
.form-hint, .listing-form small { color: var(--muted); }
.image-manager { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 16px; }
.image-tile { position: relative; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: #f8fafc; }
.image-tile img { width: 100%; aspect-ratio: 4/3; object-fit: cover; display: block; }
.image-tile > span { position: absolute; left: 8px; top: 8px; background: #dcfce7; color: #166534; padding: 5px 9px; border-radius: 999px; font-weight: 900; font-size: 12px; }
.image-actions { padding: 8px; display: flex; gap: 6px; flex-wrap: wrap; }
.image-actions button { border: 0; background: #f1f5f9; padding: 7px 9px; border-radius: 10px; cursor: pointer; font-weight: 800; }
.moderation-note { margin-top: 16px; border: 1px solid #fecaca; background: #fef2f2; color: #991b1b; padding: 12px; border-radius: 14px; }
.btn-danger { background: #dc2626; color: #fff; }
.stack-form { display: grid; gap: 10px; margin-top: 14px; }
.admin-detail-grid { display: grid; grid-template-columns: 1fr 360px; gap: 24px; align-items: start; }
.admin-images { grid-template-columns: repeat(3, 1fr); }
.history-list { display: grid; gap: 12px; }
.history-list > div { border: 1px solid var(--line); border-radius: 14px; padding: 12px; }
.history-list span { display: block; color: var(--muted); margin: 5px 0; }

@media (max-width: 980px) {
    .form-grid, .admin-detail-grid { grid-template-columns: 1fr; }
    .image-manager { grid-template-columns: repeat(2, 1fr); }
    .split-title, .filter-bar { flex-direction: column; align-items: stretch; }
}