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

:root {
  --bg:        #070707;
  --surface:   #111111;
  --border:    #1e1e1e;
  --teal:      #00d4b4;
  --teal-dim:  #00a889;
  --text:      #e8e4df;
  --muted:     #6b6b6b;
  --serif:     'Instrument Serif', Georgia, serif;
  --sans:      'DM Sans', system-ui, sans-serif;
}

html { scroll-behavior: smooth; font-size: 16px; }

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

/* ─── Typography ─────────────────────────────────────── */
.section-title {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 2.5rem;
}

/* ─── Navigation ─────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(7,7,7,0.85);
  backdrop-filter: blur(16px);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}
.nav-os { color: var(--teal); }
.nav-tagline {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* ─── Hero ───────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 2rem 5rem;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: -20%;
  width: 80%;
  height: 60%;
  background: radial-gradient(ellipse at center, rgba(0,212,180,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.hero-grid {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}
.hero-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 1.5rem;
}
.hero-headline {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  font-weight: 400;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 1.75rem;
}
.hero-sub {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--muted);
  max-width: 420px;
}

/* Trend Display */
.trend-display {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.75rem;
  position: relative;
}
.trend-display::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(0,212,180,0.03) 0%, transparent 50%);
  pointer-events: none;
}
.trend-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.trend-label {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
}
.trend-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 8px var(--teal);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}
.trend-waves { margin-bottom: 1.5rem; }
.waves-svg { width: 100%; height: 80px; overflow: visible; }
.wave { opacity: 0.12; }
.wave-1 { fill: var(--teal); animation: wave 4s ease-in-out infinite; }
.wave-2 { fill: var(--teal); animation: wave 4s ease-in-out infinite 0.6s; }
.wave-3 { fill: var(--teal); animation: wave 4s ease-in-out infinite 1.2s; }
@keyframes wave {
  0%, 100% { d: path("M0,100 C40,60 80,140 120,100 C160,60 200,130 240,90 C280,50 300,80 320,70 L320,140 L0,140Z"); }
  50% { d: path("M0,80 C50,50 90,110 130,80 C170,50 210,100 250,70 C290,40 305,65 320,55 L320,140 L0,140Z"); }
}
.trend-items { display: flex; flex-direction: column; gap: 0.6rem; }
.trend-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
}
.trend-hot { border-color: rgba(0,212,180,0.2); }
.trend-warm { border-color: rgba(255,200,0,0.15); }
.trend-new { border-color: rgba(140,130,255,0.15); }
.trend-ticker {
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  min-width: 60px;
}
.trend-topic {
  font-size: 0.8rem;
  color: var(--text);
  flex: 1;
}
.trend-score {
  font-size: 0.75rem;
  font-weight: 500;
  font-family: var(--sans);
  color: var(--teal);
}

/* ─── Manifesto ───────────────────────────────────────── */
.manifesto {
  padding: 7rem 2rem;
  border-top: 1px solid var(--border);
}
.manifesto-inner {
  max-width: 800px;
  margin: 0 auto;
}
.manifesto-quote {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 400;
  font-style: italic;
  color: var(--text);
  line-height: 1.35;
  margin-bottom: 3rem;
  padding-left: 1.5rem;
  border-left: 2px solid var(--teal);
}
.manifesto-body p {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

/* ─── How ─────────────────────────────────────────────── */
.how {
  padding: 7rem 2rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.how .section-title { padding-left: 0; }
.how-steps {
  max-width: 900px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.how-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
}
.how-step:last-child { border-bottom: none; }
.step-num {
  font-family: var(--serif);
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--border);
  line-height: 1;
  padding-top: 0.25rem;
}
.step-content h3 {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 0.6rem;
  color: var(--text);
}
.step-content p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
}

/* ─── Philosophy ──────────────────────────────────────── */
.philosophy { padding: 7rem 2rem; }
.philosophy-inner { max-width: 1200px; margin: 0 auto; }
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.philosophy-card {
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  transition: border-color 0.2s;
}
.philosophy-card:hover { border-color: rgba(0,212,180,0.25); }
.card-icon { color: var(--teal); display: block; margin-bottom: 1.25rem; }
.philosophy-card h4 {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
  color: var(--text);
}
.philosophy-card p {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ─── Closing ─────────────────────────────────────────── */
.closing {
  padding: 10rem 2rem;
  text-align: center;
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.closing-inner { max-width: 700px; margin: 0 auto; }
.closing-statement {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 400;
  line-height: 1.25;
  color: var(--text);
}

/* ─── Footer ──────────────────────────────────────────── */
.footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
}
.footer-inner { max-width: 1200px; margin: 0 auto; text-align: center; }
.footer-brand {
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}
.footer-os { color: var(--teal); }
.footer-note { font-size: 0.8rem; color: var(--muted); }

/* ─── Responsive ──────────────────────────────────────── */
@media (max-width: 768px) {
  .hero { padding: 7rem 1.5rem 4rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 3rem; }
  .hero-visual { order: -1; }
  .philosophy-grid { grid-template-columns: 1fr; }
  .how-step { grid-template-columns: 50px 1fr; gap: 1rem; }
  .step-num { font-size: 1.8rem; }
  .manifesto, .how, .philosophy, .closing { padding: 5rem 1.5rem; }
}

@media (max-width: 480px) {
  .nav-tagline { display: none; }
  .hero-headline { font-size: 2rem; }
  .closing-statement { font-size: 1.8rem; }
}