/* =====================================================
   StackFlippers — Public Frontend CSS
   Premium SaaS Marketplace Design
   ===================================================== */

/* ─── CSS Custom Properties ─────────────────────────── */
:root {
  --sf-bg: #08080f;
  --sf-surface: #0e0e1a;
  --sf-surface-2: #141428;
  --sf-surface-3: #1a1a35;
  --sf-border: #1e1e38;
  --sf-border-hover: #3b3b6b;
  --sf-accent: #6366f1;
  --sf-accent-hover: #4f46e5;
  --sf-accent-2: #8b5cf6;
  --sf-accent-glow: rgba(99,102,241,0.2);
  --sf-success: #10b981;
  --sf-warning: #f59e0b;
  --sf-danger: #ef4444;
  --sf-text: #f0f4ff;
  --sf-text-2: #c7d0e8;
  --sf-text-muted: #6b7a9e;
  --sf-radius: 14px;
  --sf-radius-lg: 20px;
  --sf-radius-xl: 28px;
  --sf-radius-sm: 8px;
  --sf-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --sf-font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --sf-shadow: 0 8px 32px rgba(0,0,0,0.5);
  --sf-shadow-card: 0 4px 16px rgba(0,0,0,0.35), 0 1px 3px rgba(0,0,0,0.5);
  --sf-transition: 0.25s cubic-bezier(0.4,0,0.2,1);
  --sf-max-width: 1240px;
}

/* ─── Dark Mode ─────────────────────────────────────── */
@media (prefers-color-scheme: light) {
  :root {
    --sf-bg: #f8faff;
    --sf-surface: #ffffff;
    --sf-surface-2: #f1f4ff;
    --sf-surface-3: #e8edff;
    --sf-border: #dde3f8;
    --sf-border-hover: #a5afdb;
    --sf-text: #111827;
    --sf-text-2: #374151;
    --sf-text-muted: #6b7280;
    --sf-shadow-card: 0 4px 16px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.05);
  }
}

/* Force dark mode via body class (toggled by JS) */
body.sf-dark {
  --sf-bg: #08080f; --sf-surface: #0e0e1a; --sf-surface-2: #141428;
  --sf-surface-3: #1a1a35; --sf-border: #1e1e38; --sf-border-hover: #3b3b6b;
  --sf-text: #f0f4ff; --sf-text-2: #c7d0e8; --sf-text-muted: #6b7a9e;
}

/* ─── Reset / Base ──────────────────────────────────── */
.sf-page *, .sf-page *::before, .sf-page *::after { box-sizing: border-box; }

.sf-page {
  font-family: var(--sf-font);
  background: var(--sf-bg);
  color: var(--sf-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.sf-page a { color: var(--sf-accent); text-decoration: none; transition: color var(--sf-transition); }
.sf-page a:hover { color: var(--sf-accent-hover); }

.sf-container {
  width: 100%;
  max-width: var(--sf-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Navigation ─────────────────────────────────────── */
.sf-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8,8,15,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--sf-border);
}

.sf-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}

.sf-nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--sf-text);
  letter-spacing: -.5px;
  text-decoration: none;
}

.sf-nav-logo span { color: var(--sf-accent); }
.sf-nav-logo-icon { font-size: 24px; }

.sf-nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.sf-nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--sf-text-muted);
  transition: color var(--sf-transition);
  white-space: nowrap;
}

.sf-nav-links a:hover, .sf-nav-links .active a { color: var(--sf-text); }

.sf-nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.sf-nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.sf-nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--sf-text);
  border-radius: 2px;
  transition: all var(--sf-transition);
}

/* ─── Buttons ───────────────────────────────────────── */
.sf-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--sf-radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid transparent;
  text-decoration: none !important;
  transition: all var(--sf-transition);
  white-space: nowrap;
  font-family: var(--sf-font);
}

.sf-btn-primary {
  background: var(--sf-accent);
  border-color: var(--sf-accent);
  color: #fff;
}
.sf-btn-primary:hover {
  background: var(--sf-accent-hover);
  border-color: var(--sf-accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99,102,241,0.35);
}

.sf-btn-outline {
  background: transparent;
  border-color: var(--sf-border-hover);
  color: var(--sf-text-2);
}
.sf-btn-outline:hover {
  border-color: var(--sf-accent);
  color: var(--sf-accent);
  background: var(--sf-accent-glow);
}

.sf-btn-ghost {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.1);
  color: var(--sf-text);
}
.sf-btn-ghost:hover { background: rgba(255,255,255,0.1); color: var(--sf-text); }

.sf-btn-lg   { padding: 14px 32px; font-size: 16px; border-radius: 10px; }
.sf-btn-xl   { padding: 18px 40px; font-size: 17px; border-radius: 12px; }
.sf-btn-sm   { padding: 7px 16px; font-size: 13px; }
.sf-btn-icon { padding: 10px; border-radius: 8px; }

/* ─── Section Layout ─────────────────────────────────── */
.sf-section { padding: 80px 0; }
.sf-section-sm { padding: 48px 0; }
.sf-section-lg { padding: 120px 0; }

.sf-section-header {
  text-align: center;
  margin-bottom: 56px;
}

.sf-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--sf-accent);
  background: var(--sf-accent-glow);
  padding: 5px 14px;
  border-radius: 20px;
  border: 1px solid rgba(99,102,241,0.3);
  margin-bottom: 16px;
}

.sf-section-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.03em;
  color: var(--sf-text);
  margin: 0 0 16px;
}

.sf-section-subtitle {
  font-size: 18px;
  color: var(--sf-text-muted);
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ─── Hero Section ─────────────────────────────────── */
.sf-hero {
  position: relative;
  padding: 100px 0 80px;
  overflow: hidden;
  background: var(--sf-bg);
}

.sf-hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 700px;
  background: radial-gradient(ellipse at center, rgba(99,102,241,0.15) 0%, rgba(139,92,246,0.08) 40%, transparent 70%);
  pointer-events: none;
}

.sf-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.sf-hero-content {}

.sf-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(99,102,241,0.12);
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  color: #a5b4fc;
  margin-bottom: 24px;
}

.sf-hero-title {
  font-size: clamp(36px, 5vw, 62px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.04em;
  color: var(--sf-text);
  margin: 0 0 20px;
}

.sf-hero-title .sf-gradient-text {
  background: linear-gradient(135deg, var(--sf-accent), var(--sf-accent-2), #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sf-hero-desc {
  font-size: 18px;
  color: var(--sf-text-muted);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 520px;
}

.sf-hero-ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.sf-hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.sf-hero-stat {}
.sf-hero-stat-value { font-size: 26px; font-weight: 800; color: var(--sf-text); line-height: 1.1; }
.sf-hero-stat-label { font-size: 12px; color: var(--sf-text-muted); margin-top: 2px; }

.sf-hero-visual {
  position: relative;
}

.sf-hero-card-stack {
  position: relative;
  perspective: 1000px;
}

.sf-hero-mockup {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-lg);
  padding: 24px;
  box-shadow: var(--sf-shadow);
  animation: sf-float 5s ease-in-out infinite;
}

@keyframes sf-float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-12px); }
}

/* ─── Listing Cards ──────────────────────────────────── */
.sf-listings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.sf-listing-card {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius);
  overflow: hidden;
  transition: all var(--sf-transition);
  position: relative;
  display: flex;
  flex-direction: column;
}

.sf-listing-card:hover {
  border-color: var(--sf-accent);
  box-shadow: 0 12px 40px rgba(99,102,241,0.15), var(--sf-shadow-card);
  transform: translateY(-4px);
}

.sf-card-featured { border-color: rgba(99,102,241,0.4); }
.sf-card-badge {
  position: absolute;
  top: 12px; left: 12px;
  background: linear-gradient(135deg, var(--sf-accent), var(--sf-accent-2));
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  z-index: 2;
  letter-spacing: .05em;
}

.sf-card-thumb {
  position: relative;
  height: 180px;
  overflow: hidden;
  background: var(--sf-surface-2);
}

.sf-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--sf-transition);
}

.sf-listing-card:hover .sf-card-thumb img { transform: scale(1.04); }

.sf-industry-tag {
  position: absolute;
  bottom: 10px; right: 10px;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 20px;
  letter-spacing: .04em;
}

.sf-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.sf-card-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  margin: 0;
  color: var(--sf-text);
}

.sf-card-title a { color: inherit; text-decoration: none; }
.sf-card-title a:hover { color: var(--sf-accent); }

.sf-card-desc {
  font-size: 13px;
  color: var(--sf-text-muted);
  line-height: 1.6;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sf-card-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.sf-metric {
  background: var(--sf-surface-2);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-sm);
  padding: 10px 12px;
}

.sf-metric-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--sf-text-muted);
  display: block;
  margin-bottom: 3px;
}

.sf-metric-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--sf-text);
  display: block;
  line-height: 1;
}

.sf-price-tag { color: var(--sf-accent); font-size: 18px; }
.sf-positive   { color: var(--sf-success); }
.sf-negative   { color: var(--sf-danger); }

.sf-card-techs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.sf-tech-chip {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 20px;
  background: var(--sf-surface-2);
  border: 1px solid var(--sf-border);
  color: var(--sf-text-muted);
  font-family: var(--sf-font-mono);
}

.sf-card-cta {
  display: block;
  text-align: center;
  margin-top: auto;
  padding: 10px;
  background: var(--sf-surface-2);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-sm);
  font-size: 13px;
  font-weight: 600;
  color: var(--sf-text-2);
  transition: all var(--sf-transition);
}

.sf-card-cta:hover {
  background: var(--sf-accent);
  border-color: var(--sf-accent);
  color: #fff;
}

/* ─── Marketplace Filters ────────────────────────────── */
.sf-marketplace-header {
  margin-bottom: 36px;
}

.sf-filters-bar {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius);
  padding: 20px 24px;
  display: flex;
  gap: 16px;
  align-items: flex-end;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.sf-filter-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  min-width: 140px;
}

.sf-filter-group label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--sf-text-muted);
}

.sf-filter-group input,
.sf-filter-group select {
  background: var(--sf-surface-2);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-sm);
  color: var(--sf-text);
  padding: 9px 12px;
  font-size: 13px;
  font-family: var(--sf-font);
  width: 100%;
  transition: border-color var(--sf-transition);
}

.sf-filter-group input:focus,
.sf-filter-group select:focus {
  border-color: var(--sf-accent);
  outline: none;
  box-shadow: 0 0 0 3px var(--sf-accent-glow);
}

.sf-filters-actions {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  flex-shrink: 0;
}

.sf-marketplace-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.sf-result-count {
  font-size: 14px;
  color: var(--sf-text-muted);
}

.sf-sort-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--sf-text-muted);
}

.sf-sort-bar select {
  background: var(--sf-surface-2);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-sm);
  color: var(--sf-text);
  padding: 7px 12px;
  font-size: 13px;
}

/* ─── Single Listing ─────────────────────────────────── */
.sf-listing-hero {
  padding: 60px 0 40px;
  background: var(--sf-surface);
  border-bottom: 1px solid var(--sf-border);
}

.sf-listing-hero-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: start;
}

.sf-listing-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -.03em;
  margin: 0 0 16px;
  color: var(--sf-text);
}

.sf-listing-meta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.sf-listing-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  background: var(--sf-surface-2);
  border: 1px solid var(--sf-border);
  color: var(--sf-text-2);
}

.sf-listing-short-desc {
  font-size: 17px;
  color: var(--sf-text-muted);
  line-height: 1.75;
  margin: 0;
  max-width: 620px;
}

.sf-listing-price-card {
  background: var(--sf-surface-2);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius);
  padding: 24px;
  min-width: 240px;
  text-align: center;
}

.sf-price-label { font-size: 12px; color: var(--sf-text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: .08em; }
.sf-price-value { font-size: 36px; font-weight: 900; color: var(--sf-accent); letter-spacing: -.03em; margin: 6px 0 16px; }

.sf-price-ctas { display: flex; flex-direction: column; gap: 10px; }
.sf-price-ctas .sf-btn { width: 100%; }

.sf-listing-body {
  padding: 60px 0;
}

.sf-listing-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.sf-listing-main {}
.sf-listing-sidebar {}

/* ─── Metrics Block ──────────────────────────────────── */
.sf-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 14px;
  margin-bottom: 40px;
}

.sf-metric-block {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius);
  padding: 18px 16px;
  text-align: center;
  transition: border-color var(--sf-transition);
}

.sf-metric-block:hover { border-color: var(--sf-accent); }

.sf-metric-block-value {
  font-size: 24px;
  font-weight: 800;
  color: var(--sf-text);
  letter-spacing: -.02em;
  margin-bottom: 4px;
}

.sf-metric-block-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--sf-text-muted);
}

/* ─── Content Sections ───────────────────────────────── */
.sf-content-section {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius);
  margin-bottom: 24px;
  overflow: hidden;
}

.sf-content-section-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--sf-border);
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--sf-surface-2);
}

.sf-content-section-header h2 {
  font-size: 16px;
  font-weight: 700;
  margin: 0;
  color: var(--sf-text);
}

.sf-section-icon { font-size: 20px; }

.sf-content-section-body {
  padding: 24px;
  color: var(--sf-text-2);
  line-height: 1.8;
  font-size: 15px;
}

.sf-content-section-body p { margin: 0 0 12px; }
.sf-content-section-body p:last-child { margin: 0; }

/* ─── Charts ─────────────────────────────────────────── */
.sf-chart-wrap {
  padding: 20px;
  height: 240px;
  position: relative;
}

/* ─── Tech Stack Grid ─────────────────────────────────── */
.sf-tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 20px;
}

.sf-tech-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 30px;
  background: var(--sf-surface-2);
  border: 1px solid var(--sf-border);
  font-size: 13px;
  font-weight: 600;
  color: var(--sf-text-2);
  font-family: var(--sf-font-mono);
  transition: all var(--sf-transition);
}

.sf-tech-pill:hover { border-color: var(--sf-accent); color: var(--sf-accent); }

/* ─── Assets Checklist ────────────────────────────────── */
.sf-assets-list {
  list-style: none;
  margin: 0;
  padding: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.sf-asset-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  padding: 10px 12px;
  border-radius: var(--sf-radius-sm);
  background: var(--sf-surface-2);
  border: 1px solid var(--sf-border);
}

.sf-asset-check { font-size: 16px; }
.sf-asset-included { color: var(--sf-success); }
.sf-asset-excluded { color: var(--sf-text-muted); text-decoration: line-through; opacity: .5; }

/* ─── Verification ────────────────────────────────────── */
.sf-verification-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
}

.sf-verification-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-radius: var(--sf-radius-sm);
  background: var(--sf-surface-2);
  border: 1px solid var(--sf-border);
  font-size: 13px;
}

.sf-verification-label { display: flex; align-items: center; gap: 8px; font-weight: 600; color: var(--sf-text-2); }
.sf-verification-status { font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 20px; }
.sf-verified   { background: rgba(16,185,129,0.12); color: #34d399; }
.sf-unverified { background: rgba(100,116,139,0.12); color: #94a3b8; }

/* ─── Sidebar Cards ───────────────────────────────────── */
.sf-sidebar-card {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius);
  overflow: hidden;
  margin-bottom: 20px;
}

.sf-sidebar-card-header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--sf-border);
  font-size: 14px;
  font-weight: 700;
  color: var(--sf-text);
  background: var(--sf-surface-2);
}

.sf-sidebar-card-body { padding: 18px; }

/* ─── Forms ─────────────────────────────────────────── */
.sf-form { display: flex; flex-direction: column; gap: 16px; }

.sf-form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.sf-form-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--sf-text-2);
}

.sf-form-control {
  background: var(--sf-surface-2);
  border: 1.5px solid var(--sf-border);
  border-radius: var(--sf-radius-sm);
  color: var(--sf-text);
  padding: 11px 14px;
  font-size: 14px;
  font-family: var(--sf-font);
  width: 100%;
  transition: border-color var(--sf-transition), box-shadow var(--sf-transition);
  resize: vertical;
}

.sf-form-control:focus {
  border-color: var(--sf-accent);
  outline: none;
  box-shadow: 0 0 0 3px var(--sf-accent-glow);
}

.sf-form-control::placeholder { color: var(--sf-text-muted); }

.sf-form-hint {
  font-size: 11px;
  color: var(--sf-text-muted);
  margin-top: 2px;
}

.sf-form-submit-row { margin-top: 4px; }

.sf-form-message {
  padding: 12px 16px;
  border-radius: var(--sf-radius-sm);
  font-size: 13px;
  font-weight: 500;
  display: none;
}

.sf-form-message.success { background: rgba(16,185,129,.12); border: 1px solid rgba(16,185,129,.3); color: #34d399; }
.sf-form-message.error   { background: rgba(239,68,68,.12);  border: 1px solid rgba(239,68,68,.3);  color: #f87171; }

/* ─── Modal / Dialog ─────────────────────────────────── */
.sf-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--sf-transition);
}

.sf-modal-overlay.open { opacity: 1; visibility: visible; }

.sf-modal {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-xl);
  width: 100%;
  max-width: 520px;
  padding: 32px;
  transform: scale(0.95);
  transition: transform var(--sf-transition);
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
}

.sf-modal-overlay.open .sf-modal { transform: scale(1); }

.sf-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.sf-modal-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--sf-text);
  margin: 0;
}

.sf-modal-close {
  width: 32px; height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  cursor: pointer;
  color: var(--sf-text-muted);
  font-size: 18px;
  background: var(--sf-surface-2);
  border: 1px solid var(--sf-border);
  transition: all var(--sf-transition);
}

.sf-modal-close:hover { background: var(--sf-danger); color: #fff; border-color: var(--sf-danger); }

/* ─── Trust / How It Works ───────────────────────────── */
.sf-trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}

.sf-trust-card {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius);
  padding: 28px 24px;
  text-align: center;
  transition: all var(--sf-transition);
}

.sf-trust-card:hover {
  border-color: var(--sf-accent);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(99,102,241,0.12);
}

.sf-trust-icon { font-size: 36px; margin-bottom: 16px; display: block; }
.sf-trust-title { font-size: 17px; font-weight: 700; color: var(--sf-text); margin: 0 0 10px; }
.sf-trust-desc  { font-size: 14px; color: var(--sf-text-muted); line-height: 1.65; }

/* ─── Steps / How It Works ───────────────────────────── */
.sf-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
  position: relative;
}

.sf-step {
  text-align: center;
  padding: 28px 24px;
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius);
  transition: all var(--sf-transition);
}

.sf-step:hover { border-color: var(--sf-accent); transform: translateY(-3px); }

.sf-step-number {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--sf-accent), var(--sf-accent-2));
  color: #fff;
  font-size: 18px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.sf-step-title { font-size: 16px; font-weight: 700; color: var(--sf-text); margin: 0 0 8px; }
.sf-step-desc  { font-size: 13px; color: var(--sf-text-muted); line-height: 1.65; }

/* ─── Stats Bar ──────────────────────────────────────── */
.sf-stats-bar {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-lg);
  padding: 28px 40px;
  display: flex;
  gap: 0;
  flex-wrap: wrap;
}

.sf-stats-item {
  flex: 1;
  min-width: 140px;
  text-align: center;
  padding: 8px 16px;
  position: relative;
}

.sf-stats-item + .sf-stats-item::before {
  content: '';
  position: absolute;
  left: 0; top: 20%; bottom: 20%;
  width: 1px;
  background: var(--sf-border);
}

.sf-stats-value {
  font-size: 32px;
  font-weight: 900;
  color: var(--sf-text);
  letter-spacing: -.03em;
  line-height: 1;
  margin-bottom: 4px;
}

.sf-stats-value span { color: var(--sf-accent); }
.sf-stats-label { font-size: 13px; color: var(--sf-text-muted); }

/* ─── Sell CTA ───────────────────────────────────────── */
.sf-cta-section {
  background: linear-gradient(135deg, rgba(99,102,241,0.12) 0%, rgba(139,92,246,0.08) 100%);
  border: 1px solid rgba(99,102,241,0.25);
  border-radius: var(--sf-radius-xl);
  padding: 64px 48px;
  text-align: center;
}

/* ─── Breadcrumb ─────────────────────────────────────── */
.sf-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--sf-text-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.sf-breadcrumb a { color: var(--sf-text-muted); }
.sf-breadcrumb a:hover { color: var(--sf-accent); }
.sf-breadcrumb-sep { color: var(--sf-border); }
.sf-breadcrumb-current { color: var(--sf-text-2); }

/* ─── Pagination ─────────────────────────────────────── */
.sf-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.sf-pagination a, .sf-pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: var(--sf-radius-sm);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--sf-border);
  background: var(--sf-surface);
  color: var(--sf-text-muted);
  transition: all var(--sf-transition);
  text-decoration: none;
}

.sf-pagination a:hover, .sf-pagination .current {
  background: var(--sf-accent);
  border-color: var(--sf-accent);
  color: #fff;
}

/* ─── Sell Form ──────────────────────────────────────── */
.sf-sell-wrap {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 48px;
  align-items: start;
}

.sf-sell-form-card {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-lg);
  padding: 36px;
}

.sf-sell-benefits { }
.sf-sell-benefit {
  display: flex;
  gap: 14px;
  margin-bottom: 20px;
}

.sf-benefit-icon { font-size: 24px; flex-shrink: 0; margin-top: 2px; }
.sf-benefit-title { font-size: 15px; font-weight: 700; color: var(--sf-text); margin: 0 0 4px; }
.sf-benefit-desc  { font-size: 13px; color: var(--sf-text-muted); line-height: 1.6; }

/* ─── Footer ─────────────────────────────────────────── */
.sf-footer {
  background: var(--sf-surface);
  border-top: 1px solid var(--sf-border);
  padding: 60px 0 32px;
  margin-top: 80px;
}

.sf-footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}

.sf-footer-brand h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--sf-text);
  margin: 0 0 12px;
}

.sf-footer-brand p {
  font-size: 14px;
  color: var(--sf-text-muted);
  line-height: 1.7;
  max-width: 280px;
}

.sf-footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--sf-text-muted);
  margin: 0 0 16px;
}

.sf-footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sf-footer-col li a {
  font-size: 14px;
  color: var(--sf-text-muted);
  transition: color var(--sf-transition);
}

.sf-footer-col li a:hover { color: var(--sf-text); }

.sf-footer-bottom {
  border-top: 1px solid var(--sf-border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.sf-footer-copy {
  font-size: 13px;
  color: var(--sf-text-muted);
}

/* ─── Loading Skeleton ───────────────────────────────── */
.sf-skeleton {
  background: linear-gradient(90deg, var(--sf-surface-2) 25%, var(--sf-surface-3) 50%, var(--sf-surface-2) 75%);
  background-size: 200% 100%;
  animation: sf-shimmer 1.5s infinite;
  border-radius: var(--sf-radius-sm);
}

@keyframes sf-shimmer { to { background-position: -200% 0; } }

/* ─── Standalone Page — Full Theme Reset ─────────────── */
body.sf-standalone,
body.sf-standalone #page,
body.sf-standalone #content,
body.sf-standalone #primary,
body.sf-standalone main,
body.sf-standalone .site,
body.sf-standalone .site-content {
  margin: 0 !important;
  padding: 0 !important;
  max-width: none !important;
  width: 100% !important;
  background: transparent !important;
  float: none !important;
}
body.sf-standalone {
  background: var(--sf-bg) !important;
  color: var(--sf-text) !important;
  font-family: var(--sf-font) !important;
}
/* Hide WP theme header, footer, sidebar completely */
body.sf-standalone .site-header,
body.sf-standalone .site-footer,
body.sf-standalone .widget-area,
body.sf-standalone #colophon,
body.sf-standalone #masthead,
body.sf-standalone .entry-header,
body.sf-standalone .entry-footer,
body.sf-standalone .nav-links,
body.sf-standalone .post-navigation,
body.sf-standalone .page-header,
body.sf-standalone .page-title,
body.sf-standalone header.site-header,
body.sf-standalone footer.site-footer {
  display: none !important;
}
/* Make sf-page fill the full viewport */
body.sf-standalone .sf-page {
  min-height: 100vh;
  background: var(--sf-bg);
}

/* ─── Mobile Nav Menu ────────────────────────────────── */
.sf-nav-mobile {
  display: none;
  flex-direction: column;
  background: var(--sf-surface);
  border-top: 1px solid var(--sf-border);
  padding: 8px 0 16px;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 99;
  box-shadow: 0 12px 32px rgba(0,0,0,0.4);
  animation: sfSlideDown 0.2s ease;
}
@keyframes sfSlideDown { from { opacity:0; transform:translateY(-8px); } to { opacity:1; transform:translateY(0); } }
.sf-nav-mobile.open { display: flex; }
.sf-nav-mobile a {
  display: block;
  padding: 13px 24px;
  font-size: 15px;
  font-weight: 500;
  color: var(--sf-text-2);
  border-bottom: 1px solid var(--sf-border);
  transition: all var(--sf-transition);
  text-decoration: none;
}
.sf-nav-mobile a:last-child { border-bottom: none; }
.sf-nav-mobile a:hover { color: var(--sf-accent); background: var(--sf-surface-2); }
.sf-nav-mobile .sf-btn { margin: 12px 24px 4px; display: block; text-align: center; border-bottom: none; }
/* Hamburger → X animation */
.sf-nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.sf-nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.sf-nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── Responsive — Tablet (1024px) ──────────────────── */
@media (max-width: 1024px) {
  .sf-hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .sf-hero-visual { display: none; }
  .sf-hero-content { text-align: center; }
  .sf-hero-ctas { justify-content: center; }
  .sf-hero-stats { justify-content: center; }
  .sf-listing-layout { grid-template-columns: 1fr; }
  .sf-listing-sidebar { order: -1; }
  .sf-listing-hero-grid { grid-template-columns: 1fr; }
  .sf-listing-price-card { min-width: auto; max-width: 420px; }
  .sf-sell-wrap { grid-template-columns: 1fr; }
  .sf-footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .sf-listings-grid { grid-template-columns: repeat(2, 1fr); }
  .sf-hero-title { font-size: clamp(32px, 5vw, 52px); }
}

/* ─── Responsive — Mobile (768px) ───────────────────── */
@media (max-width: 768px) {
  .sf-nav-links { display: none; }
  .sf-nav-actions .sf-btn-primary { display: none; }
  .sf-nav-hamburger { display: flex; }
  .sf-section { padding: 48px 0; }
  .sf-section-lg { padding: 64px 0; }
  .sf-section-header { margin-bottom: 36px; }
  .sf-section-subtitle { font-size: 15px; }
  .sf-filters-bar { flex-direction: column; gap: 12px; }
  .sf-filter-group { min-width: 100%; width: 100%; }
  .sf-filters-bar select,
  .sf-filters-bar input { width: 100%; }
  .sf-listings-grid { grid-template-columns: 1fr; }
  .sf-assets-list { grid-template-columns: 1fr; }
  .sf-footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .sf-footer-brand p { max-width: 100%; }
  .sf-stats-bar { flex-direction: column; gap: 0; padding: 20px; }
  .sf-stats-item { padding: 14px 16px; border-bottom: 1px solid var(--sf-border); }
  .sf-stats-item + .sf-stats-item::before { display: none; }
  .sf-stats-item:last-child { border-bottom: none; }
  .sf-metrics-grid { grid-template-columns: 1fr 1fr; }
  .sf-hero-title { font-size: 34px; }
  .sf-modal { padding: 24px 20px; border-radius: var(--sf-radius-lg); }
  .sf-modal-overlay { padding: 16px; align-items: flex-end; }
  .sf-modal { max-width: 100%; border-radius: 20px 20px 0 0; }
  .sf-cta-section { padding: 40px 20px; border-radius: var(--sf-radius-lg); }
  .sf-hero-ctas { flex-direction: column; align-items: stretch; }
  .sf-hero-ctas .sf-btn { text-align: center; }
  .sf-listing-hero-grid { gap: 24px; }
  .sf-listing-price-card { max-width: 100%; }
  .sf-sort-bar { flex-wrap: wrap; }
  .sf-sell-form-card { padding: 24px 20px; }
  .sf-trust-grid { grid-template-columns: 1fr; }
  .sf-steps { grid-template-columns: 1fr; }
  .sf-hero-stats { flex-wrap: wrap; gap: 16px; justify-content: center; }
  .sf-hero-stat { min-width: 120px; text-align: center; }
  .sf-stats-bar .sf-stats-value { font-size: 26px; }
}

/* ─── Responsive — Small Mobile (480px) ─────────────── */
@media (max-width: 480px) {
  .sf-container { padding: 0 16px; }
  .sf-hero { padding: 48px 0 40px; }
  .sf-hero-title { font-size: 28px; letter-spacing: -.02em; }
  .sf-hero-desc { font-size: 15px; }
  .sf-card-metrics { grid-template-columns: 1fr 1fr; }
  .sf-metrics-grid { grid-template-columns: 1fr 1fr; }
  .sf-nav-inner { height: 60px; }
  .sf-nav-logo { font-size: 17px; }
  .sf-btn-lg { padding: 12px 24px; font-size: 15px; }
  .sf-section-title { font-size: clamp(22px, 6vw, 32px); }
  .sf-listing-title { font-size: clamp(22px, 5vw, 32px); }
  .sf-price-value { font-size: 28px; }
  .sf-price-ctas { gap: 8px; }
  .sf-footer { padding: 40px 0 24px; }
  .sf-footer-bottom { flex-direction: column; text-align: center; }
  .sf-metric-block-value { font-size: 20px; }
  .sf-content-section-body { padding: 16px; }
  .sf-content-section-header { padding: 14px 16px; }
  .sf-sell-wrap { gap: 24px; }
}

/* ─── Animations ─────────────────────────────────────── */
.sf-fade-in { animation: sfFadeIn 0.5s ease forwards; }
.sf-slide-up { animation: sfSlideUp 0.5s ease forwards; }

@keyframes sfFadeIn  { from { opacity: 0; } to { opacity: 1; } }
@keyframes sfSlideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

.sf-animate-on-scroll { opacity: 0; transform: translateY(24px); transition: opacity 0.5s ease, transform 0.5s ease; }
.sf-animate-on-scroll.visible { opacity: 1; transform: translateY(0); }

/* ─── Utilities ──────────────────────────────────────── */
.sf-text-center { text-align: center; }
.sf-text-gradient {
  background: linear-gradient(135deg, var(--sf-accent), var(--sf-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sf-divider {
  border: none;
  border-top: 1px solid var(--sf-border);
  margin: 40px 0;
}

.sf-empty-state {
  text-align: center;
  padding: 80px 24px;
  color: var(--sf-text-muted);
}

.sf-empty-state-icon { font-size: 48px; margin-bottom: 16px; display: block; }
.sf-empty-state-title { font-size: 20px; font-weight: 700; color: var(--sf-text); margin: 0 0 8px; }
.sf-empty-state-desc  { font-size: 14px; line-height: 1.7; margin-bottom: 24px; }

.sf-notice {
  padding: 14px 18px;
  border-radius: var(--sf-radius-sm);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sf-notice-success { background: rgba(16,185,129,.1); border: 1px solid rgba(16,185,129,.25); color: #34d399; }
.sf-notice-error   { background: rgba(239,68,68,.1);  border: 1px solid rgba(239,68,68,.25);  color: #f87171; }
.sf-notice-info    { background: rgba(99,102,241,.1); border: 1px solid rgba(99,102,241,.25); color: #a5b4fc; }

/* ─── Blog ───────────────────────────────────────────── */
.sf-blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.sf-blog-card {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-lg);
  overflow: hidden;
  transition: transform var(--sf-transition), box-shadow var(--sf-transition), border-color var(--sf-transition);
  display: flex;
  flex-direction: column;
}
.sf-blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sf-shadow);
  border-color: var(--sf-border-hover);
}

.sf-blog-card-img-wrap {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--sf-surface-2);
}
.sf-blog-card-img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.sf-blog-card:hover .sf-blog-card-img { transform: scale(1.04); }

.sf-blog-card-img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  background: linear-gradient(135deg, var(--sf-surface-2), var(--sf-surface-3));
  text-decoration: none;
}

.sf-blog-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 10px;
}

.sf-blog-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}
.sf-blog-card-cat {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--sf-accent);
  background: var(--sf-accent-glow);
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid rgba(99,102,241,0.25);
}
.sf-blog-card-read {
  font-size: 12px;
  color: var(--sf-text-muted);
}

.sf-blog-card-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--sf-text);
  margin: 0;
}
.sf-blog-card-title a { color: var(--sf-text); text-decoration: none; }
.sf-blog-card-title a:hover { color: var(--sf-accent); }

.sf-blog-card-excerpt {
  font-size: 14px;
  color: var(--sf-text-muted);
  line-height: 1.65;
  margin: 0;
  flex: 1;
}

.sf-blog-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--sf-border);
  margin-top: auto;
}
.sf-blog-card-author {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--sf-text-2);
}
.sf-blog-avatar {
  border-radius: 50%;
  width: 28px !important;
  height: 28px !important;
}
.sf-blog-card-date {
  font-size: 12px;
  color: var(--sf-text-muted);
}

/* Blog responsive */
@media (max-width: 1024px) { .sf-blog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px)  { .sf-blog-grid { grid-template-columns: 1fr; } }

/* ─── Contact Page ───────────────────────────────────── */
.sf-contact-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 48px;
  align-items: start;
}

/* Tablet — sidebar drops below form */
@media (max-width: 1024px) {
  .sf-contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .sf-contact-grid > div:last-child {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
}

/* Mobile — fully stacked */
@media (max-width: 640px) {
  .sf-contact-grid {
    gap: 24px;
  }
  .sf-contact-grid > div:last-child {
    grid-template-columns: 1fr;
  }
  .sf-sell-form-card {
    padding: 20px 16px;
  }
}