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

:root {
  --bg: #09090f;
  --surface: #0f0f1a;
  --border: #1a1a2e;
  --fg: #e8e8f0;
  --muted: #6b6b8a;
  --accent: #00e5c8;
  --alert: #f5a623;
  --red: #e84a4a;
  --font-head: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

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

/* === Navigation === */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 3rem;
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(9,9,15,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo {
  font-size: 1.2rem;
  color: var(--accent);
}

.nav-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--fg);
  letter-spacing: 0.02em;
}

.nav-tagline {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-family: var(--font-head);
}

/* === Hero === */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  padding: 5rem 3rem 6rem;
  align-items: center;
  min-height: 80vh;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,229,200,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.hero-left { display: flex; flex-direction: column; gap: 1.5rem; }

.hero-eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-family: var(--font-head);
  font-weight: 600;
}

.hero-headline {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--fg);
}

.hero-sub {
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 440px;
}

/* Pulse SVG line */
.hero-pulse-visual { margin-top: 0.5rem; }

.pulse-line { width: 100%; max-width: 380px; }

.pulse-svg { width: 100%; height: auto; }

.pulse-label {
  font-size: 0.7rem;
  color: var(--accent);
  opacity: 0.7;
  letter-spacing: 0.08em;
  font-family: var(--font-head);
  margin-top: 0.5rem;
}

.pulse-dot { animation: pulse-glow 2s ease-in-out infinite; }
.pulse-ring { animation: pulse-expand 2s ease-out infinite; }

@keyframes pulse-glow {
  0%, 100% { opacity: 1; r: 4; }
  50% { opacity: 0.7; r: 5; }
}
@keyframes pulse-expand {
  0% { r: 10; opacity: 0.4; }
  100% { r: 20; opacity: 0; }
}

/* Hero chart */
.hero-right {
  position: relative;
}

.hero-chart-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  position: relative;
}

.chart-label {
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  font-family: var(--font-head);
  margin-bottom: 0.75rem;
}

.candlestick-svg { width: 100%; height: auto; display: block; }

.chart-footer {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.chart-sym {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--fg);
}

.chart-price {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--fg);
}

.chart-change.up { color: var(--accent); font-size: 0.8rem; font-weight: 600; }

/* === Sections === */
.section-header { text-align: center; margin-bottom: 3rem; }
.section-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-family: var(--font-head);
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.section-headline {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.01em;
}

.how-it-works { padding: 5rem 3rem; background: var(--surface); }

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.step-card { padding: 1.5rem; }

.step-number {
  font-family: var(--font-head);
  font-size: 0.7rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  opacity: 0.7;
}

.step-title {
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.75rem;
}

.step-body {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
}

/* === Signal Types === */
.signal-types { padding: 5rem 3rem; }

.signals-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.signal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  transition: border-color 0.2s;
}

.signal-card:hover { border-color: rgba(0,229,200,0.3); }

.signal-icon {
  width: 48px;
  height: 48px;
  background: rgba(0,229,200,0.08);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.signal-title {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.5rem;
}

.signal-body {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.65;
}

/* === Philosophy === */
.philosophy {
  padding: 5rem 3rem;
  background: var(--surface);
  text-align: center;
}

.philosophy-quote {
  font-family: var(--font-head);
  font-size: clamp(1.1rem, 2.2vw, 1.6rem);
  font-weight: 400;
  color: var(--fg);
  max-width: 700px;
  margin: 0 auto 1.5rem;
  line-height: 1.5;
  font-style: italic;
  opacity: 0.85;
}

.philosophy-attr {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  font-family: var(--font-head);
  font-weight: 600;
  opacity: 0.6;
}

/* === Closing === */
.closing {
  padding: 5rem 3rem 6rem;
  text-align: center;
}

.closing-headline {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 800;
  color: var(--fg);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.closing-sub {
  font-size: 1rem;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 3rem;
  line-height: 1.7;
}

.closing-vision {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.vision-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.vision-label {
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-family: var(--font-head);
}

.vision-value {
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--fg);
}

.vision-divider {
  width: 1px;
  height: 32px;
  background: var(--border);
}

/* === Footer === */
.footer {
  padding: 2rem 3rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.footer-logo {
  font-size: 0.9rem;
  color: var(--accent);
}

.footer-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--fg);
}

.footer-tagline {
  font-size: 0.75rem;
  color: var(--muted);
}

/* === Responsive === */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding: 3rem 1.5rem; gap: 2.5rem; }
  .hero-right { order: -1; }
  .steps-grid { grid-template-columns: 1fr; gap: 1rem; }
  .signals-grid { grid-template-columns: repeat(2, 1fr); }
  .nav { padding: 1rem 1.5rem; }
  .how-it-works, .signal-types, .philosophy, .closing { padding: 3rem 1.5rem; }
  .footer { padding: 1.5rem; flex-direction: column; gap: 0.5rem; text-align: center; }
}

@media (max-width: 600px) {
  .signals-grid { grid-template-columns: 1fr; }
  .closing-vision { flex-direction: column; gap: 1.5rem; }
  .vision-divider { display: none; }
}