*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --gold: #D4A843;
  --gold-light: #F0C865;
  --gold-dim: rgba(212, 168, 67, 0.15);
  --bg: #0A0A0B;
  --bg-2: #111113;
  --bg-3: #18181B;
  --border: rgba(255,255,255,0.08);
  --text: #F4F4F5;
  --muted: #71717A;
  --radius: 12px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* NAV */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(10, 10, 11, 0.8);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  height: 28px;
  width: auto;
  max-width: 200px;
  display: block;
}

.logo-badge {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-text {
  font-size: 13px;
  color: var(--muted);
  font-weight: 400;
  display: none;
}

@media (min-width: 640px) { .logo-text { display: block; } }

.nav-cta {
  font-size: 13px;
  font-weight: 600;
  color: var(--gold);
  text-decoration: none;
  border: 1px solid rgba(212, 168, 67, 0.4);
  padding: 8px 18px;
  border-radius: 8px;
  transition: all 0.2s;
}

.nav-cta:hover {
  background: var(--gold-dim);
  border-color: var(--gold);
}

/* HERO */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(212, 168, 67, 0.12) 0%, transparent 70%),
    radial-gradient(ellipse 50% 50% at 85% 50%, rgba(212, 168, 67, 0.07) 0%, transparent 60%);
  pointer-events: none;
}

#gas-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.hero-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 60px;
  width: 100%;
  position: relative;
  z-index: 2;
  flex-direction: column;
}

@media (min-width: 900px) {
  .hero-inner { flex-direction: row; }
}

.hero-visual {
  flex-shrink: 0;
  display: none;
}

@media (min-width: 900px) {
  .hero-visual { display: block; }
}

#slab-canvas {
  display: block;
  width: 360px;
  height: 498px;
}

.hero-text {
  flex: 1;
  min-width: 0;
}


/* HERO TEXT */
.hero-eyebrow { margin-bottom: 24px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gold);
  background: var(--gold-dim);
  border: 1px solid rgba(212, 168, 67, 0.3);
  padding: 6px 14px;
  border-radius: 100px;
}

.hero-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(38px, 5.5vw, 66px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 50%, #FDE68A 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 17px;
  color: #A1A1AA;
  max-width: 480px;
  margin-bottom: 36px;
  line-height: 1.65;
}

.hero-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.email-input {
  flex: 1;
  min-width: 220px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 15px;
  padding: 14px 18px;
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.2s;
  font-family: 'Inter', sans-serif;
}

.email-input::placeholder { color: var(--muted); }

.email-input:focus { border-color: rgba(212, 168, 67, 0.5); }

.btn-primary {
  background: linear-gradient(135deg, var(--gold), #C49A35);
  color: #0A0A0B;
  font-size: 15px;
  font-weight: 700;
  padding: 14px 28px;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.01em;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(212, 168, 67, 0.3);
}

.btn-primary:active { transform: translateY(0); }

.hero-disclaimer { font-size: 13px; color: var(--muted); }

/* CARD TYPES */
.cards-section {
  padding: 60px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
}

.section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 32px;
}

.section-label.light { color: var(--gold-light); }

.card-types {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.card-type {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 20px;
  font-size: 14px;
  font-weight: 500;
  transition: border-color 0.2s;
}

.card-type:hover { border-color: rgba(212, 168, 67, 0.4); }

.card-type-icon { font-size: 20px; }

/* FEATURES */
.features-section { padding: 100px 0; }

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
  }
}

.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 20px;
}

.section-title.center { text-align: center; }

.section-body {
  color: #A1A1AA;
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 36px;
}

.stat-row { display: flex; gap: 32px; }

.stat { display: flex; flex-direction: column; gap: 4px; }

.stat-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label { font-size: 12px; color: var(--muted); }

.features-right { display: flex; flex-direction: column; gap: 16px; }

.feature-card {
  display: flex;
  gap: 20px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s;
}

.feature-card:hover { border-color: rgba(212, 168, 67, 0.3); }

.feature-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--gold-dim);
  border: 1px solid rgba(212, 168, 67, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
}

.feature-card h3 { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.feature-card p { font-size: 14px; color: var(--muted); line-height: 1.6; }

/* HOW IT WORKS */
.how-section {
  padding: 100px 0;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.how-section .section-label { text-align: center; }

.steps {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 60px;
}

@media (min-width: 768px) {
  .steps { flex-direction: row; align-items: flex-start; gap: 8px; }
}

.step {
  flex: 1;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.step-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--gold);
  margin-bottom: 14px;
}

.step h3 { font-size: 16px; font-weight: 600; margin-bottom: 10px; }
.step p { font-size: 14px; color: var(--muted); line-height: 1.6; }

.step-arrow {
  color: var(--muted);
  font-size: 20px;
  display: none;
  align-self: center;
  padding: 0 4px;
  flex-shrink: 0;
}

@media (min-width: 768px) { .step-arrow { display: block; } }

/* WAITLIST */
.waitlist-section { padding: 100px 0; }

.waitlist-card {
  position: relative;
  background: var(--bg-2);
  border: 1px solid rgba(212, 168, 67, 0.2);
  border-radius: 20px;
  padding: clamp(40px, 6vw, 80px);
  text-align: center;
  overflow: hidden;
}

.waitlist-glow {
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 200px;
  background: radial-gradient(ellipse, rgba(212, 168, 67, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.waitlist-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.waitlist-subtitle {
  font-size: 17px;
  color: #A1A1AA;
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.65;
}

.waitlist-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  max-width: 500px;
  margin: 0 auto;
  justify-content: center;
}

.waitlist-note { margin-top: 16px; font-size: 13px; color: var(--muted); }

/* FOOTER */
.footer { padding: 40px 0; border-top: 1px solid var(--border); }

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  text-align: center;
}

@media (min-width: 640px) {
  .footer-inner { flex-direction: row; justify-content: space-between; text-align: left; }
}

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

/* TOAST */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: #18181B;
  border: 1px solid rgba(212, 168, 67, 0.4);
  color: var(--text);
  padding: 14px 24px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 999;
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  white-space: nowrap;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

.toast svg { color: var(--gold); flex-shrink: 0; }

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}