/* ========================================
   NEURON — Competitor Intelligence Agent
   ======================================== */

:root {
  --bg: #04040a;
  --bg-secondary: #080812;
  --fg: #e8e8f0;
  --fg-muted: #8888a0;
  --accent: #2dd4f0;
  --accent-dim: rgba(45, 212, 240, 0.08);
  --amber: #f59e0b;
  --cyan: #2dd4f0;
  --border: rgba(255, 255, 255, 0.07);
  --border-accent: rgba(45, 212, 240, 0.2);
  --radius: 6px;
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* NAV */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 48px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(4, 4, 10, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--fg);
}

.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--fg-muted);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 48px;
  position: relative;
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(45, 212, 240, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 212, 240, 0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 80%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(45, 212, 240, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 20px;
  font-family: var(--font-display);
  font-weight: 500;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.8rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 480px;
}

/* MONITOR FRAME */
.monitor-frame {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(45, 212, 240, 0.05),
    0 40px 80px rgba(0, 0, 0, 0.6),
    0 0 60px rgba(45, 212, 240, 0.04);
}

.monitor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(45, 212, 240, 0.04);
}

.monitor-title {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.monitor-live {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: rgba(45, 212, 240, 0.1);
  padding: 3px 8px;
  border-radius: 3px;
  border: 1px solid rgba(45, 212, 240, 0.2);
}

.signal-list {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.signal-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px;
  border-radius: 6px;
  transition: background 0.2s;
}

.signal-item:hover { background: rgba(255,255,255,0.03); }

.signal-dim { opacity: 0.5; }

.signal-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 6px;
  flex-shrink: 0;
}

.dot-amber { background: var(--amber); box-shadow: 0 0 6px rgba(245, 158, 11, 0.5); }
.dot-cyan { background: var(--accent); box-shadow: 0 0 6px rgba(45, 212, 240, 0.5); }
.dot-dim { background: rgba(255,255,255,0.15); }

.signal-name {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 2px;
}

.signal-signal {
  font-size: 0.78rem;
  color: var(--fg-muted);
  line-height: 1.4;
  margin-bottom: 4px;
}

.signal-time {
  font-size: 0.68rem;
  color: rgba(255,255,255,0.3);
  font-family: var(--font-display);
  letter-spacing: 0.02em;
}

.monitor-summary {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--fg-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.summary-sep { opacity: 0.3; }

/* MANIFESTO */
.manifesto {
  padding: 120px 48px;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}

.manifesto-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.manifesto-label, .section-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 24px;
}

.manifesto-headline {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 32px;
}

.manifesto-body {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

/* HOW IT WORKS */
.how-it-works {
  padding: 120px 48px;
  border-top: 1px solid var(--border);
}

.how-header, .what-header {
  max-width: 600px;
  margin: 0 auto 72px;
  text-align: center;
}

.section-headline {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--fg);
}

.steps-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step-card {
  padding: 40px 32px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-secondary);
  position: relative;
}

.step-number {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 20px;
  background: var(--accent-dim);
  display: inline-block;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--border-accent);
}

.step-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 12px;
}

.step-body {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* WHAT YOU GET */
.what-you-get {
  padding: 120px 48px;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}

.signals-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.signal-type {
  padding: 36px 28px;
  background: var(--bg);
}

.signal-type-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 20px;
}

.signal-type-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 8px;
}

.signal-type-desc {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* THE SHIFT */
.the-shift {
  padding: 120px 48px;
  border-top: 1px solid var(--border);
}

.shift-inner {
  max-width: 900px;
  margin: 0 auto;
}

.shift-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 48px;
  text-align: center;
}

.shift-content {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 48px;
  align-items: start;
}

.shift-tag {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-muted);
  margin-bottom: 24px;
}

.shift-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.shift-list li {
  font-size: 0.95rem;
  color: var(--fg-muted);
  padding-left: 20px;
  position: relative;
  line-height: 1.5;
}

.shift-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
}

.shift-new .shift-list li::before { background: var(--accent); }

.shift-divider {
  width: 1px;
  height: 180px;
  background: var(--border);
  margin-top: 50px;
}

/* CLOSING */
.closing {
  padding: 160px 48px;
  border-top: 1px solid var(--border);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.closing::before {
  content: '';
  position: absolute;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(45, 212, 240, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 24px;
}

.closing-sub {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 520px;
  margin: 0 auto;
}

/* FOOTER */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 48px;
}

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

.footer-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--fg);
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

.footer-copy {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.2);
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-content { grid-template-columns: 1fr; gap: 48px; }
  .steps-grid { grid-template-columns: 1fr; }
  .signals-grid { grid-template-columns: 1fr; }
  .shift-content { grid-template-columns: 1fr; gap: 32px; }
  .shift-divider { display: none; }
  .nav { padding: 20px 24px; }
  .hero { padding: 60px 24px; }
  .manifesto, .how-it-works, .what-you-get, .the-shift, .closing { padding: 80px 24px; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
}

@media (max-width: 480px) {
  .hero-headline { font-size: 2rem; }
  .closing-headline { font-size: 1.8rem; }
}