/* AgentOS — Terminal-dark, IBM Plex typography */
:root {
  --bg: #0d0d0d;
  --bg-2: #141414;
  --bg-3: #1a1a1a;
  --fg: #e8e8e8;
  --fg-muted: #888;
  --accent: #00e5ff;
  --accent-dim: rgba(0, 229, 255, 0.12);
  --warn: #ff9f43;
  --good: #2ecc71;
  --border: rgba(255,255,255,0.07);
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── NAV ── */
.nav {
  padding: 20px 48px;
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
}
.nav-logo {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.5px;
  color: var(--fg);
}
.nav-status {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--good);
  box-shadow: 0 0 8px var(--good);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ── HERO ── */
.hero {
  padding: 80px 48px 100px;
  max-width: 1200px;
  margin: 0 auto;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.hero-eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 20px;
}
.hero-headline {
  font-family: var(--mono);
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -2px;
  color: var(--fg);
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 17px;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 440px;
  margin-bottom: 32px;
}
.hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.pill {
  font-family: var(--mono);
  font-size: 11px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--fg-muted);
  background: var(--bg-2);
}

/* Hero Widget */
.hero-widget {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(0,0,0,0.4);
}
.widget-header {
  background: var(--bg-3);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}
.widget-title {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}
.widget-live {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--good);
  padding: 3px 8px;
  border: 1px solid var(--good);
  border-radius: 4px;
  letter-spacing: 1px;
}
.widget-body {
  padding: 20px;
}
.widget-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.widget-row:last-of-type { border-bottom: none; }
.widget-label {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-muted);
}
.widget-value {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--fg);
}
.widget-value.accent { color: var(--accent); }
.widget-value.warn { color: var(--warn); }
.widget-value.good { color: var(--good); }
.widget-divider {
  height: 1px;
  background: var(--border);
  margin: 14px 0;
}
.widget-event {
  display: flex;
  gap: 12px;
  padding: 8px 0;
  font-size: 12px;
  color: var(--fg-muted);
}
.event-time {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-muted);
  flex-shrink: 0;
  padding-top: 1px;
}
.event-text { line-height: 1.5; }

/* ── MONITOR SECTION ── */
.monitor {
  padding: 100px 48px;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.monitor-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.monitor-badge {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 20px;
}
.monitor-headline {
  font-family: var(--mono);
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -1.5px;
  line-height: 1.1;
  color: var(--fg);
  margin-bottom: 20px;
}
.monitor-sub {
  font-size: 17px;
  color: var(--fg-muted);
  max-width: 600px;
  margin-bottom: 64px;
  line-height: 1.7;
}
.monitor-steps {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: start;
  gap: 0;
}
.step { padding: 0 24px; }
.step-num {
  font-family: var(--mono);
  font-size: 48px;
  font-weight: 700;
  color: var(--accent-dim);
  letter-spacing: -2px;
  margin-bottom: 16px;
}
.step h3 {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 10px;
}
.step p {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.6;
}
.step-connector {
  width: 1px;
  background: var(--border);
  align-self: stretch;
  min-height: 140px;
  margin-top: 20px;
}

/* ── FEATURES ── */
.features {
  padding: 100px 48px;
}
.features-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.feature-card {
  padding: 32px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color 0.2s;
}
.feature-card:hover { border-color: rgba(0,229,255,0.2); }
.feature-icon {
  color: var(--accent);
  margin-bottom: 16px;
  width: 24px;
  height: 24px;
}
.feature-card h3 {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ── ARCHITECTURE ── */
.arch {
  padding: 100px 48px;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.arch-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.arch-badge {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 20px;
}
.arch-headline {
  font-family: var(--mono);
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.15;
  color: var(--fg);
  margin-bottom: 48px;
}
.arch-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.arch-item {
  padding: 28px 32px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.arch-item:nth-child(2n) { border-right: none; }
.arch-item:nth-child(3),
.arch-item:nth-child(4) { border-bottom: none; }
.arch-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.arch-value {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.5;
}

/* ── CLOSING ── */
.closing {
  padding: 100px 48px;
}
.closing-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.closing-quote .quote-text {
  font-size: 22px;
  line-height: 1.5;
  color: var(--fg);
  font-style: italic;
  margin-bottom: 16px;
}
.closing-quote .quote-sub {
  font-size: 15px;
  color: var(--fg-muted);
}
.vision-badge {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.vision-text {
  font-size: 16px;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* ── FOOTER ── */
.footer {
  padding: 40px 48px;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-logo {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 16px;
  color: var(--fg);
  display: block;
  margin-bottom: 6px;
}
.footer-tagline {
  font-size: 13px;
  color: var(--fg-muted);
}
.footer-meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-muted);
  text-align: right;
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .nav { padding: 16px 24px; }
  .hero { padding: 60px 24px; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .monitor { padding: 80px 24px; }
  .monitor-steps { grid-template-columns: 1fr; gap: 0; }
  .step-connector { display: none; }
  .features { padding: 80px 24px; }
  .features-inner { grid-template-columns: 1fr; }
  .arch { padding: 80px 24px; }
  .arch-grid { grid-template-columns: 1fr; }
  .arch-item { border-right: none; }
  .arch-item:nth-child(3) { border-bottom: 1px solid var(--border); }
  .closing { padding: 80px 24px; }
  .closing-inner { grid-template-columns: 1fr; gap: 48px; }
  .footer { padding: 32px 24px; }
  .footer-inner { flex-direction: column; gap: 16px; align-items: flex-start; }
  .footer-meta { text-align: left; }
}