/* === CSS Variables === */
:root {
  --bg-dark: #0f0d1a;
  --bg-deep: #13112a;
  --bg-surface: #1c1938;
  --accent-warm: #e8894a;
  --accent-glow: #f4a96a;
  --text-primary: #f0ebe3;
  --text-secondary: #9d97b0;
  --text-muted: #5e5880;
  --border-subtle: rgba(240, 235, 227, 0.08);
  --border-warm: rgba(232, 137, 74, 0.2);

  /* Signal colors */
  --signal-wake: #7eb8f7;
  --signal-peak: #f4d03f;
  --signal-rest: #82c99e;
  --signal-create: #e8894a;
  --signal-wind: #9d7bd4;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --space-2xl: 6rem;
}

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

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

body {
  font-family: var(--font-body);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* === Nav === */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem 2.5rem;
  background: rgba(15, 13, 26, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-tagline {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}

/* === Hero === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 2.5rem 5rem;
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse 70% 60% at 70% 40%, rgba(232, 137, 74, 0.07) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.hero-eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-warm);
  font-weight: 500;
  margin-bottom: var(--space-md);
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-lg);
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 420px;
  line-height: 1.75;
}

/* Hero sky visual */
.hero-sky {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 1.5rem;
  background: var(--bg-surface);
  border-radius: 1.25rem;
  border: 1px solid var(--border-subtle);
  position: relative;
}

.sky-arc {
  position: relative;
  height: 120px;
  color: var(--accent-warm);
}

.sun-orb {
  position: absolute;
  bottom: 8px;
  left: calc(50% - 14px);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #fff8e7, var(--accent-glow), var(--accent-warm));
  box-shadow: 0 0 24px rgba(232, 137, 74, 0.6), 0 0 60px rgba(232, 137, 74, 0.25);
}

.arc-path {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.signal-labels {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.signal-label {
  display: grid;
  grid-template-columns: 10px 80px 1fr;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
}

.signal-marker {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.signal-wake .signal-marker { background: var(--signal-wake); box-shadow: 0 0 6px var(--signal-wake); }
.signal-peak .signal-marker { background: var(--signal-peak); box-shadow: 0 0 6px var(--signal-peak); }
.signal-rest .signal-marker { background: var(--signal-rest); box-shadow: 0 0 6px var(--signal-rest); }
.signal-create .signal-marker { background: var(--signal-create); box-shadow: 0 0 6px var(--signal-create); }
.signal-wind .signal-marker { background: var(--signal-wind); box-shadow: 0 0 6px var(--signal-wind); }

.signal-name {
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}

.signal-desc {
  color: var(--text-muted);
}

/* === Signals Section === */
.signals {
  padding: var(--space-2xl) 2.5rem;
  background: var(--bg-deep);
  position: relative;
}

.signals::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-warm), transparent);
}

.signals-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.section-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

.signals-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  overflow: hidden;
}

.signal-card {
  padding: 1.75rem 1.25rem;
  background: var(--bg-deep);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: background 0.2s;
}

.signal-card:hover { background: var(--bg-surface); }

.signal-card-icon {
  margin-bottom: 0.25rem;
}

.signal-wake-card .signal-card-icon { color: var(--signal-wake); }
.signal-peak-card .signal-card-icon { color: var(--signal-peak); }
.signal-rest-card .signal-card-icon { color: var(--signal-rest); }
.signal-create-card .signal-card-icon { color: var(--signal-create); }
.signal-wind-card .signal-card-icon { color: var(--signal-wind); }

.signal-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.signal-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.signal-detail {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
  border-top: 1px solid var(--border-subtle);
  padding-top: 0.75rem;
  margin-top: 0.25rem;
}

/* === Promises Section === */
.promises {
  padding: var(--space-2xl) 2.5rem;
  background: var(--bg-dark);
}

.promises-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.promises-header {
  margin-bottom: var(--space-xl);
}

.promises-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.promise h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--accent-glow);
  letter-spacing: -0.01em;
}

.promise p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.guardrails {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
}

.guardrail {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 500;
}

.guardrail-icon { color: var(--text-muted); display: flex; align-items: center; }

.guardrail-text {
  flex-basis: 100%;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-style: italic;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
}

/* === Philosophy === */
.philosophy {
  padding: var(--space-2xl) 2.5rem;
  background: var(--bg-deep);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.philosophy-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.philosophy-quote {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2.1rem);
  font-style: italic;
  font-weight: 400;
  color: var(--text-primary);
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.philosophy-body {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.philosophy-body em { color: var(--accent-warm); font-style: italic; }

/* === Closing === */
.closing {
  padding: var(--space-2xl) 2.5rem 8rem;
  background: var(--bg-dark);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.closing::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 300px;
  background: radial-gradient(ellipse 80% 100% at 50% 100%, rgba(232, 137, 74, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.closing-inner {
  max-width: 680px;
  margin: 0 auto;
  position: relative;
}

.closing-sky {
  margin: 0 auto var(--space-xl);
  height: 3px;
  width: 80px;
  background: linear-gradient(90deg, var(--signal-wake), var(--signal-peak), var(--signal-rest), var(--signal-create), var(--signal-wind));
  border-radius: 2px;
}

.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: var(--space-md);
}

.closing-sub {
  font-size: 1.1rem;
  color: var(--accent-warm);
  font-family: var(--font-display);
  font-style: italic;
  margin-bottom: var(--space-lg);
}

.closing-body {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* === Footer === */
footer {
  padding: 2.5rem 2.5rem;
  background: var(--bg-deep);
  border-top: 1px solid var(--border-subtle);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.footer-tagline {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-style: italic;
}

/* === Responsive === */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-sky { display: none; }
  .signals-grid { grid-template-columns: repeat(2, 1fr); }
  .promises-grid { grid-template-columns: 1fr; }
  .philosophy-inner { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 0.75rem; text-align: center; }
  .hero { padding-top: 7rem; }
}

@media (max-width: 600px) {
  .signals-grid { grid-template-columns: 1fr; }
  .hero-headline { font-size: 2rem; }
  nav { padding: 1rem 1.25rem; }
  .signals, .promises, .philosophy, .closing, .hero { padding-left: 1.25rem; padding-right: 1.25rem; }
}