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

:root {
  --bg: #080C14;
  --bg-surface: #0F1520;
  --bg-card: #131B28;
  --fg: #E8EDF5;
  --fg-muted: #7A8699;
  --accent: #00F0FF;
  --accent-dim: rgba(0, 240, 255, 0.12);
  --accent-border: rgba(0, 240, 255, 0.25);
  --red: #FF4D4D;
  --yellow: #FFB800;
  --green: #00E676;
  --font-display: 'Space Grotesk', 'Helvetica Neue', sans-serif;
  --font-body: 'DM Sans', 'Helvetica Neue', sans-serif;
  --radius: 12px;
  --radius-sm: 6px;
}

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

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

/* === HERO === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 0 60px;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 40%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 40%, black 40%, transparent 100%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.sync-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  border-radius: 100px;
  padding: 6px 14px 6px 10px;
  margin-bottom: 28px;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(0, 240, 255, 0.4);
  animation: pulse-dot 2s ease-out infinite;
}

@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(0, 240, 255, 0.4); }
  70% { box-shadow: 0 0 0 8px rgba(0, 240, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 240, 255, 0); }
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4vw, 3.75rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 24px;
}

.hero-lede {
  font-size: 1.125rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 40px;
}

.hero-metrics {
  display: flex;
  align-items: center;
  gap: 24px;
}

.metric { display: flex; flex-direction: column; }

.metric-value {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent);
}

.metric-label {
  font-size: 0.75rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 2px;
}

.metric-sep {
  width: 1px;
  height: 32px;
  background: rgba(255,255,255,0.08);
}

/* === BROWSER FRAME === */
.hero-right {
  display: flex;
  justify-content: center;
  align-items: center;
}

.browser-frame {
  width: 100%;
  max-width: 460px;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 40px 80px rgba(0,0,0,0.5), 0 0 0 1px rgba(0,240,255,0.06);
}

.browser-topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-surface);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.browser-dots { display: flex; gap: 6px; }
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-red { background: #FF5F57; }
.dot-yellow { background: #FFBD2E; }
.dot-green { background: #27C840; }

.browser-url-bar {
  flex: 1;
  background: rgba(255,255,255,0.05);
  border-radius: 6px;
  padding: 5px 12px;
  font-size: 0.75rem;
  font-family: var(--font-display);
  color: var(--fg-muted);
  text-align: center;
}

.browser-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.session-users {
  display: flex;
  gap: 8px;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  background: rgba(0, 240, 255, 0.15);
  color: var(--accent);
  border: 2px solid var(--accent-border);
  position: relative;
}

.user-pulse {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  animation: user-pulse 2s ease-out infinite;
}

@keyframes user-pulse {
  0% { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(1.6); }
}

.co-browse-viewport {
  position: relative;
  background: #0A0E18;
  border-radius: 10px;
  overflow: hidden;
  height: 160px;
  border: 1px solid rgba(255,255,255,0.06);
}

.content-mock {
  padding: 16px;
  height: 100%;
}

.mock-image {
  width: 64px;
  height: 64px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(0,240,255,0.2), rgba(0,240,255,0.05));
  border: 1px solid rgba(0,240,255,0.15);
  margin-bottom: 10px;
}

.mock-lines { display: flex; flex-direction: column; gap: 6px; }
.mock-line {
  height: 6px;
  border-radius: 3px;
  background: rgba(255,255,255,0.07);
}
.mock-line.wide { width: 85%; }
.mock-line.medium { width: 60%; }
.mock-line.narrow { width: 40%; }

.annotation {
  position: absolute;
}

.annotation-1 {
  top: 20px;
  left: 80px;
}

.annotation-2 {
  bottom: 30px;
  right: 20px;
}

.annotation-line {
  background: rgba(0, 240, 255, 0.15);
  border: 1px solid rgba(0, 240, 255, 0.3);
  border-radius: 4px;
  padding: 4px 8px;
}

.annotation-text {
  font-family: var(--font-display);
  font-size: 0.625rem;
  font-weight: 500;
  color: var(--accent);
}

.session-voice-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 240, 255, 0.06);
  border: 1px solid rgba(0, 240, 255, 0.12);
  border-radius: 8px;
  padding: 10px 14px;
}

.voice-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(0, 240, 255, 0.15);
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.voice-wave {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
}

.wave-bar {
  width: 3px;
  height: 14px;
  border-radius: 2px;
  background: rgba(0, 240, 255, 0.25);
  display: inline-block;
}

.wave-bar.active {
  background: var(--accent);
  animation: wave-bounce 0.8s ease-in-out infinite alternate;
}

@keyframes wave-bounce {
  0% { height: 6px; }
  100% { height: 16px; }
}

.voice-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  color: var(--accent);
  font-weight: 500;
}

.sync-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: rgba(0, 230, 118, 0.1);
  border-top: 1px solid rgba(255,255,255,0.05);
  font-family: var(--font-display);
  font-size: 0.7rem;
  color: var(--green);
  font-weight: 500;
}

.sync-icon {
  font-size: 0.875rem;
  animation: sync-spin 4s linear infinite;
}

@keyframes sync-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* === FEATURES === */
.features {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--bg) 0%, #0A0E1A 100%);
}

.features-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

.features-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-eyebrow {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-heading {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  border-color: var(--accent-border);
  box-shadow: 0 0 40px rgba(0, 240, 255, 0.05);
}

.feature-icon {
  margin-bottom: 20px;
}

.feature-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.9375rem;
  color: var(--fg-muted);
  line-height: 1.65;
  margin-bottom: 24px;
}

.feature-stat {
  display: flex;
  flex-direction: column;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 20px;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-desc {
  font-size: 0.75rem;
  color: var(--fg-muted);
  margin-top: 4px;
}

.tech-callout {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius);
  padding: 20px 28px;
  margin-top: 40px;
}

.tech-badge {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0, 240, 255, 0.15);
  border: 1px solid rgba(0, 240, 255, 0.25);
  border-radius: 100px;
  padding: 4px 12px;
  white-space: nowrap;
}

.tech-desc {
  font-size: 0.875rem;
  color: var(--fg-muted);
  line-height: 1.5;
}

/* === MANIFESTO === */
.manifesto {
  padding: 100px 0;
  background: #060910;
}

.manifesto-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: start;
}

.manifesto-eyebrow {
  text-align: left;
}

.manifesto-heading {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--fg);
  margin-bottom: 32px;
}

.manifesto-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.manifesto-body p {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.75;
}

.manifesto-body strong {
  color: var(--fg);
  font-weight: 500;
}

.quote-block {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 40px;
}

.quote-mark {
  font-family: var(--font-display);
  font-size: 4rem;
  line-height: 0.5;
  color: var(--accent);
  display: block;
  margin-bottom: 16px;
  opacity: 0.4;
}

.quote-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--fg);
  font-style: italic;
  margin-bottom: 24px;
}

.quote-author {
  font-size: 0.875rem;
  color: var(--fg-muted);
  font-style: normal;
}

/* === CLOSING === */
.closing {
  padding: 100px 0 80px;
  background: var(--bg);
}

.closing-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 80px;
  align-items: center;
}

.closing-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.closing-orb {
  position: relative;
  width: 200px;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orb-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0, 240, 255, 0.15);
}

.orb-ring-1 { inset: 0; animation: orb-pulse 3s ease-in-out infinite; }
.orb-ring-2 { inset: 20px; animation: orb-pulse 3s ease-in-out infinite 0.5s; }
.orb-ring-3 { inset: 40px; animation: orb-pulse 3s ease-in-out infinite 1s; }

@keyframes orb-pulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.04); }
}

.orb-core {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,240,255,0.2) 0%, transparent 70%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.closing-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--fg);
  margin-bottom: 24px;
}

.closing-body {
  font-size: 1.0625rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.closing-body:last-of-type { margin-bottom: 0; }

/* === FOOTER === */
.footer {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 40px 0;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--fg);
  display: block;
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--fg-muted);
  margin-top: 4px;
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--fg-muted);
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 60px;
    padding: 0 24px;
  }

  .hero-right { order: -1; }
  .browser-frame { max-width: 380px; }

  .feature-grid { grid-template-columns: 1fr; }

  .manifesto-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .closing-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .closing-visual { display: none; }

  .features-inner, .manifesto-inner, .closing-inner, .footer-inner {
    padding: 0 24px;
  }

  .tech-callout { flex-direction: column; gap: 12px; }

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

  .features { padding: 60px 0; }
  .manifesto { padding: 60px 0; }
  .closing { padding: 60px 0 40px; }
}

@media (max-width: 480px) {
  .hero-headline { font-size: 2.25rem; }
  .hero-lede { font-size: 1rem; }
  .hero-metrics { gap: 16px; }
  .metric-value { font-size: 1.125rem; }
}