/* =============================================
   SHELFSENSE — THEME CSS
   ============================================= */

/* --- Variables --- */
:root {
  --bg: #F7F4EF;
  --bg-alt: #EDEAE3;
  --fg: #1C1C1C;
  --fg-muted: #6B6560;
  --accent: #2A6041;
  --accent-light: #3D8C5C;
  --gold: #C9922A;
  --card-bg: #FFFFFF;
  --nav-bg: #F7F4EF;
  --border: #DDD8CF;
}

/* --- Base --- */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 {
  font-family: 'Syne', system-ui, sans-serif;
  font-weight: 700;
  line-height: 1.15;
}

/* --- Navigation --- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: baseline;
  gap: 16px;
}
.nav-logo {
  font-family: 'Syne', sans-serif;
  font-size: 22px;
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.5px;
}
.logo-accent { color: var(--accent); }
.nav-tagline {
  font-size: 13px;
  color: var(--fg-muted);
  font-weight: 400;
}

/* --- Hero --- */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 32px 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-eyebrow {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero-headline {
  font-size: clamp(36px, 4vw, 52px);
  font-weight: 800;
  color: var(--fg);
  margin-bottom: 24px;
  letter-spacing: -1.5px;
}
.hero-sub {
  font-size: 17px;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 460px;
  margin-bottom: 32px;
}
.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.hero-pill {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 999px;
}

/* --- Hero Visual: Review Card Stack --- */
.hero-visual {
  position: relative;
  height: 360px;
}
.review-card-stack {
  position: relative;
  width: 100%;
  height: 100%;
}
.review-card {
  position: absolute;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
  width: 85%;
}
.card-1 { top: 0; left: 0; z-index: 3; transform: rotate(-2deg); }
.card-2 { top: 60px; left: 30px; z-index: 2; transform: rotate(1.5deg); }
.card-3 { top: 120px; left: 10px; z-index: 1; transform: rotate(-1deg); }
.card-stars { color: #F5A623; font-size: 14px; margin-bottom: 8px; }
.card-text {
  font-size: 13px;
  color: var(--fg);
  line-height: 1.5;
  margin-bottom: 10px;
  font-style: italic;
}
.card-meta {
  display: block;
  font-size: 11px;
  color: var(--fg-muted);
  margin-bottom: 8px;
}
.card-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
}
.tag-negative { background: #FEE2E2; color: #991B1B; }
.tag-positive { background: #D1FAE5; color: #065F46; }
.tag-warning { background: #FEF3C7; color: #92400E; }

/* --- Signals Bar --- */
.signals {
  background: var(--fg);
  padding: 40px 32px;
}
.signals-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.signal-block {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.signal-num {
  font-family: 'Syne', sans-serif;
  font-size: 36px;
  font-weight: 800;
  color: var(--gold);
  letter-spacing: -1px;
}
.signal-label {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  max-width: 180px;
}
.signal-divider {
  width: 1px;
  height: 48px;
  background: rgba(255,255,255,0.15);
}

/* --- Features --- */
.features {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 32px;
}
.features-header {
  max-width: 540px;
  margin-bottom: 64px;
}
.features-header h2 {
  font-size: clamp(28px, 3vw, 40px);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.features-header p {
  font-size: 17px;
  color: var(--fg-muted);
  line-height: 1.65;
}
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
.feature-card {
  background: var(--card-bg);
  padding: 40px;
}
.fc-icon {
  width: 48px;
  height: 48px;
  background: var(--bg);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
}
.feature-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}
.feature-card p {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* --- How It Works --- */
.how {
  background: var(--fg);
  padding: 100px 32px;
}
.how-header {
  max-width: 1200px;
  margin: 0 auto 64px;
}
.how-header h2 {
  font-size: clamp(28px, 3vw, 40px);
  color: #fff;
  letter-spacing: -0.5px;
}
.how-steps {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}
.how-step {}
.step-num {
  display: block;
  font-family: 'Syne', sans-serif;
  font-size: 48px;
  font-weight: 800;
  color: var(--gold);
  letter-spacing: -2px;
  margin-bottom: 16px;
  opacity: 0.7;
}
.how-step h3 {
  font-size: 18px;
  color: #fff;
  margin-bottom: 12px;
}
.how-step p {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
}

/* --- Closing --- */
.closing {
  padding: 100px 32px;
  background: var(--bg);
}
.closing-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}
.closing-statement {
  font-size: clamp(18px, 2vw, 24px);
  color: var(--fg-muted);
  line-height: 1.65;
  margin-bottom: 24px;
  font-weight: 300;
}
.closing-tagline {
  font-family: 'Syne', sans-serif;
  font-size: clamp(22px, 2.5vw, 30px);
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.5px;
  margin-top: 40px;
}

/* --- Footer --- */
.footer {
  background: var(--fg);
  padding: 60px 32px 40px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 24px;
}
.footer-logo {
  font-family: 'Syne', sans-serif;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
}
.footer-desc {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  margin-top: 8px;
  max-width: 240px;
}
.footer-links {
  display: flex;
  gap: 24px;
  align-items: center;
}
.footer-links span {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  cursor: pointer;
}
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
}
.footer-bottom p {
  font-size: 12px;
  color: rgba(255,255,255,0.3);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 48px 24px 40px;
  }
  .hero-visual { height: 280px; }
  .review-card { width: 90%; padding: 16px; }
  .card-2 { left: 20px; }
  .signals-inner { justify-content: flex-start; gap: 24px; }
  .signal-divider { display: none; }
  .features-grid { grid-template-columns: 1fr; }
  .how-steps { grid-template-columns: 1fr; gap: 40px; }
  .footer-inner { flex-direction: column; }
  .footer-links { flex-wrap: wrap; gap: 16px; }
  .nav-inner { padding: 14px 24px; }
}