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

:root {
  --black: #0D0D0D;
  --dark: #1A1A1A;
  --card: #232323;
  --card-hover: #2A2A2A;
  --orange: #FF4500;
  --orange-dim: rgba(255,69,0,0.15);
  --warm-white: #FAFAF8;
  --gray-1: #E8E8E6;
  --gray-2: #999;
  --gray-3: #555;
  --text-light: #CCC;

  --font-display: 'Bricolage Grotesque', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--black);
  color: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 40px;
  background: rgba(13,13,13,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  letter-spacing: -0.02em;
}
.nav-badge {
  font-size: 11px;
  font-weight: 500;
  color: var(--orange);
  background: var(--orange-dim);
  border: 1px solid rgba(255,69,0,0.3);
  border-radius: 100px;
  padding: 4px 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px 40px 80px;
  background: var(--black);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,69,0,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,69,0,0.4), transparent);
}
.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.hero-text {}
.hero-overline {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 20px;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(48px, 6vw, 80px);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 18px;
  color: var(--text-light);
  max-width: 440px;
  line-height: 1.65;
  font-weight: 300;
}

/* Product Cards */
.hero-visual {
  display: flex;
  justify-content: center;
}
.product-card-stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 100%;
  max-width: 340px;
}
.product-card {
  background: var(--card);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 16px;
  padding: 18px 20px;
  transition: transform 0.2s, border-color 0.2s;
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px;
  height: 100%;
  background: var(--orange);
  border-radius: 4px 0 0 4px;
  opacity: 0.7;
}
.card-1 { transform: translateX(0px); }
.card-2 { transform: translateX(12px); opacity: 0.85; }
.card-3 { transform: translateX(24px); opacity: 0.65; }
.product-card:hover { border-color: rgba(255,69,0,0.25); }
.card-spark {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.spark-icon {
  width: 20px;
  height: 20px;
  background: var(--orange-dim);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.card-spark span {
  font-size: 11px;
  font-weight: 600;
  color: var(--orange);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.card-name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.card-tag {
  font-size: 10px;
  font-weight: 500;
  color: #fff;
  background: rgba(255,255,255,0.1);
  border-radius: 100px;
  padding: 3px 10px;
  letter-spacing: 0.04em;
}
.card-margin {
  font-size: 12px;
  color: #4ade80;
  font-weight: 500;
}
.card-bar {
  height: 3px;
  background: rgba(255,255,255,0.08);
  border-radius: 100px;
  margin-bottom: 6px;
  overflow: hidden;
}
.card-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--orange), #FF6B35);
  border-radius: 100px;
}
.card-stat {
  font-size: 11px;
  color: var(--gray-2);
}

/* Section Commons */
.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 12px;
}
.section-heading {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: #fff;
}

/* How It Works */
.hiw {
  padding: 100px 40px;
  background: var(--dark);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.hiw-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.hiw .section-heading {
  margin-bottom: 64px;
  max-width: 500px;
}
.hiw-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}
.hiw-step {}
.step-num {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 800;
  color: rgba(255,69,0,0.2);
  line-height: 1;
  margin-bottom: 16px;
  letter-spacing: -0.04em;
}
.step-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.step-desc {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.65;
  font-weight: 300;
}

/* Categories */
.categories {
  padding: 100px 40px;
  background: var(--black);
}
.categories-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.categories .section-heading {
  margin-bottom: 56px;
}
.cat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.cat-card {
  background: var(--card);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 20px;
  padding: 32px;
  transition: border-color 0.2s, transform 0.2s;
}
.cat-card:hover {
  border-color: rgba(255,69,0,0.3);
  transform: translateY(-2px);
}
.cat-icon {
  width: 48px;
  height: 48px;
  background: var(--orange-dim);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  margin-bottom: 20px;
}
.cat-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}
.cat-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 16px;
  font-weight: 300;
}
.cat-trend {
  font-size: 11px;
  font-weight: 600;
  color: var(--orange);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Why TrendCart */
.why {
  padding: 100px 40px;
  background: var(--dark);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.why-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.why-content {
  max-width: 760px;
}
.why .section-heading {
  margin-bottom: 24px;
}
.why-body {
  font-size: 17px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 56px;
  font-weight: 300;
}
.why-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.why-stat {}
.stat-num {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 800;
  color: var(--orange);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.03em;
}
.stat-label {
  font-size: 13px;
  color: var(--gray-2);
  line-height: 1.4;
}

/* Closing */
.closing {
  padding: 120px 40px;
  background: var(--black);
  text-align: center;
}
.closing-inner {
  max-width: 700px;
  margin: 0 auto;
}
.closing-overline {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 20px;
}
.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(32px, 4.5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 28px;
}
.closing-body {
  font-size: 17px;
  color: var(--text-light);
  line-height: 1.7;
  font-weight: 300;
}

/* Footer */
.footer {
  padding: 60px 40px;
  background: var(--dark);
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}
.footer-sub {
  font-size: 13px;
  color: var(--gray-2);
}
.footer-copy {
  font-size: 12px;
  color: var(--gray-3);
  margin-top: 4px;
}

/* Responsive */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { display: none; }
  .hiw-steps { grid-template-columns: 1fr; gap: 40px; }
  .cat-grid { grid-template-columns: 1fr; }
  .why-stats { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 600px) {
  .hero { padding: 90px 24px 60px; }
  .hiw, .categories, .why, .closing { padding: 72px 24px; }
  .navbar { padding: 0 24px; }
}