/* === BASE === */
:root {
  --bg: #F7F4EF;
  --surface: #FFFFFF;
  --fg: #1A1814;
  --fg-2: #5C5751;
  --fg-3: #9C9690;
  --accent: #E8543A;
  --accent-warm: #F4E4D4;
  --accent-cool: #D4E4F4;
  --border: #E8E4DE;
  --navy: #1E3A5F;
  --slack: #4A154B;
  --gmail: #EA4335;
  --cal: #4285F4;
  --msg: #25D366;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* === NAV === */
.nav {
  padding: 24px 48px;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: baseline;
  gap: 12px;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.5px;
  color: var(--fg);
}

.nav-tagline {
  font-size: 13px;
  color: var(--fg-3);
  font-weight: 400;
}

/* === SECTION LABELS === */
.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

/* === HERO === */
.hero {
  padding: 80px 48px 80px;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 20px;
}

.hero-headline {
  font-family: 'Syne', sans-serif;
  font-size: 56px;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -2px;
  color: var(--fg);
  margin-bottom: 28px;
}

.hero-accent {
  color: var(--accent);
}

.hero-sub {
  font-size: 17px;
  color: var(--fg-2);
  line-height: 1.7;
  max-width: 420px;
  margin-bottom: 40px;
}

.hero-cta {
  display: inline-block;
  background: var(--fg);
  color: var(--bg);
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* === NOTIFICATION STREAM VISUAL === */
.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.notif-stream {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}

.notif {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: transform 0.2s ease;
}

.notif:hover { transform: translateX(4px); }

.notif-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.slack-icon { background: var(--slack); }
.gmail-icon { background: var(--gmail); }
.cal-icon { background: var(--cal); }
.msg-icon { background: var(--msg); }

.notif-body { flex: 1; min-width: 0; }

.notif-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--fg);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.notif-text {
  font-size: 12px;
  color: var(--fg-3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

.notif-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.action-chip {
  font-size: 10px;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 6px;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: transform 0.15s ease;
}

.action-chip:hover { transform: scale(1.05); }

.action-task { background: #E8F5E9; color: #2E7D32; }
.action-cal { background: var(--accent-cool); color: #1E3A5F; }
.action-archive { background: var(--accent-warm); color: #8B4513; }

.stream-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 11px;
  color: var(--fg-3);
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* === PROBLEM === */
.problem {
  padding: 100px 48px;
  background: var(--fg);
  color: var(--bg);
}

.problem-inner { max-width: 1200px; margin: 0 auto; }

.problem .section-label { color: var(--accent); }

.problem-headline {
  font-family: 'Syne', sans-serif;
  font-size: 44px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 56px;
  color: var(--bg);
}

.problem-stats {
  display: flex;
  align-items: center;
  gap: 48px;
  margin-bottom: 48px;
  padding: 40px 0;
  border-top: 1px solid rgba(255,255,255,0.12);
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

.stat { flex: 1; }

.stat-number {
  font-family: 'Syne', sans-serif;
  font-size: 48px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  line-height: 1.5;
}

.stat-divider {
  width: 1px;
  height: 60px;
  background: rgba(255,255,255,0.12);
}

.problem-body {
  font-size: 18px;
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
  max-width: 680px;
}

/* === HOW === */
.how {
  padding: 100px 48px;
  background: var(--bg);
}

.how-inner { max-width: 1200px; margin: 0 auto; }

.how-headline {
  font-family: 'Syne', sans-serif;
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--fg);
  margin-bottom: 64px;
}

.how-steps {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0;
  align-items: start;
}

.step { padding: 0 24px; }

.step-num {
  font-family: 'Syne', sans-serif;
  font-size: 48px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
  opacity: 0.8;
}

.step-title {
  font-family: 'Syne', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 10px;
}

.step-desc {
  font-size: 14px;
  color: var(--fg-2);
  line-height: 1.6;
}

.step-arrow {
  display: flex;
  align-items: center;
  padding-top: 24px;
  color: var(--fg-3);
}

/* === FEATURES === */
.features {
  padding: 100px 48px;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

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

.features-headline {
  font-family: 'Syne', sans-serif;
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--fg);
  margin-bottom: 64px;
  line-height: 1.15;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--bg);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: white;
}

.feature-title {
  font-family: 'Syne', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 14px;
  color: var(--fg-2);
  line-height: 1.6;
}

/* === CLOSING === */
.closing {
  padding: 100px 48px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.closing-inner { max-width: 1200px; margin: 0 auto; }

.closing-headline {
  font-family: 'Syne', sans-serif;
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--fg);
  margin-bottom: 32px;
  line-height: 1.2;
}

.closing-body {
  font-size: 17px;
  color: var(--fg-2);
  line-height: 1.8;
  max-width: 680px;
  margin-bottom: 48px;
}

.closing-statement {
  display: flex;
  align-items: baseline;
  gap: 0;
}

.closing-brand {
  font-family: 'Syne', sans-serif;
  font-size: 22px;
  font-weight: 800;
  color: var(--accent);
}

.closing-tagline {
  font-size: 17px;
  color: var(--fg-2);
}

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

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer-brand {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 18px;
  color: var(--fg);
}

.footer-note {
  font-size: 13px;
  color: var(--fg-3);
  flex: 1;
}

.footer-copy {
  font-size: 12px;
  color: var(--fg-3);
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-headline { font-size: 42px; }
  .hero-visual { display: none; }
  .problem-headline { font-size: 32px; }
  .problem-stats { flex-direction: column; gap: 24px; }
  .stat-divider { display: none; }
  .how-steps { grid-template-columns: 1fr; gap: 32px; }
  .step-arrow { display: none; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .features-headline { font-size: 28px; }
}

@media (max-width: 600px) {
  .nav { padding: 16px 24px; }
  .hero { padding: 60px 24px; }
  .hero-headline { font-size: 34px; letter-spacing: -1px; }
  .problem { padding: 64px 24px; }
  .problem-headline { font-size: 26px; }
  .how { padding: 64px 24px; }
  .how-headline { font-size: 26px; }
  .features { padding: 64px 24px; }
  .feature-grid { grid-template-columns: 1fr; }
  .closing { padding: 64px 24px; }
  .closing-headline { font-size: 26px; }
  .footer { padding: 32px 24px; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 8px; }
}