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

:root {
  --navy:       #0f1c2e;
  --navy-light: #1a2f4a;
  --amber:      #f5a623;
  --amber-dim:  #c4821a;
  --cream:      #faf6f0;
  --ink:        #1a1a2e;
  --muted:      #7a8899;
  --border:     rgba(245,166,35,0.15);
  --glass:      rgba(15,28,46,0.85);
  --entry-ok:   #d4edda;
  --entry-esc:  #fff3cd;
  --entry-drift:#ffe0b2;
  --entry-canary:#d1ecf1;
  --font-head:  'DM Serif Display', Georgia, serif;
  --font-body:  'DM Sans', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--navy);
  color: var(--cream);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* === TYPOGRAPHY === */
.section-label {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

/* === NAVBAR === */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav-brand { display: flex; align-items: center; gap: 0.6rem; }
.nav-brand-name { font-family: var(--font-body); font-weight: 600; font-size: 0.95rem; color: var(--cream); }
.nav-meta { font-size: 0.8rem; color: var(--muted); font-weight: 400; }

/* === HERO === */
.hero {
  padding: 5rem 2rem 4rem;
  background: linear-gradient(160deg, #0d1829 0%, var(--navy) 60%, #0d1a2e 100%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(245,166,35,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  max-width: 1160px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.hero-eyebrow { margin-bottom: 1rem; }
.hero-headline {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  line-height: 1.12;
  color: var(--cream);
  margin-bottom: 1.5rem;
  font-weight: 400;
}
.hero-lede {
  font-size: 1.05rem;
  color: rgba(250,246,240,0.72);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 2.5rem;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.hero-stat { display: flex; flex-direction: column; gap: 0.2rem; }
.stat-num { font-family: var(--font-head); font-size: 1.6rem; color: var(--amber); line-height: 1; }
.stat-label { font-size: 0.72rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }
.hero-stat-divider { width: 1px; height: 36px; background: var(--border); flex-shrink: 0; }

/* Hero Diagram */
.hero-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}
.diagram-label-top {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--amber);
  font-weight: 600;
}
.execution-ring {
  position: relative;
  width: 280px;
  height: 280px;
  border: 1.5px dashed rgba(245,166,35,0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.exec-node {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}
.exec-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--amber);
  background: var(--navy-light);
  color: var(--amber);
}
.exec-name { font-size: 0.75rem; color: var(--cream); font-weight: 500; }
.exec-chat  { top: -2px; left: 50%; transform: translateX(-50%); }
.exec-workflow { right: -2px; top: 50%; transform: translateY(-50%); }
.exec-agent  { bottom: -2px; left: 50%; transform: translateX(-50%); }
.exec-handoff{ left: -2px; top: 50%; transform: translateY(-50%); }
.exec-center {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(245,166,35,0.12);
  border: 1.5px solid rgba(245,166,35,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
}
.exec-center-label { font-size: 0.68rem; text-align: center; color: var(--amber); line-height: 1.3; font-weight: 600; letter-spacing: 0.05em; }
.diagram-label-bottom { font-size: 0.65rem; color: var(--muted); letter-spacing: 0.08em; text-align: center; }

/* === PROBLEM === */
.problem { padding: 5rem 2rem; background: var(--navy); }
.problem-inner { max-width: 1100px; margin: 0 auto; }
.problem-header { margin-bottom: 3rem; }
.problem-headline {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  line-height: 1.2;
  color: var(--cream);
  font-weight: 400;
}
.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.problem-card {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: border-color 0.2s;
}
.problem-card:hover { border-color: rgba(245,166,35,0.4); }
.problem-icon { color: var(--amber); margin-bottom: 1.25rem; }
.problem-card h3 { font-size: 1.05rem; font-weight: 600; color: var(--cream); margin-bottom: 0.75rem; }
.problem-card p { font-size: 0.9rem; color: var(--muted); line-height: 1.65; }

/* === EXECUTION MODES === */
.exec-modes { padding: 5rem 2rem; background: linear-gradient(180deg, var(--navy) 0%, #0d1829 100%); }
.exec-modes-inner { max-width: 1100px; margin: 0 auto; }
.exec-modes-header { margin-bottom: 3rem; text-align: center; }
.exec-modes-headline {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  color: var(--cream);
  font-weight: 400;
  margin-bottom: 0.75rem;
}
.exec-modes-sub { font-size: 1rem; color: var(--muted); }
.exec-mode-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.mode-card {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
  transition: border-color 0.2s;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.mode-card:hover { border-color: rgba(245,166,35,0.4); }
.mode-card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.25rem; }
.mode-icon-wrap { color: var(--amber); }
.mode-label { font-size: 0.65rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.mode-title { font-size: 1.15rem; font-weight: 600; color: var(--cream); margin-bottom: 0.6rem; }
.mode-desc { font-size: 0.82rem; color: var(--muted); line-height: 1.6; margin-bottom: 1.25rem; }
.mode-features { list-style: none; display: flex; flex-direction: column; gap: 0.4rem; }
.mode-features li { font-size: 0.78rem; color: rgba(250,246,240,0.65); padding-left: 1rem; position: relative; }
.mode-features li::before { content: '—'; position: absolute; left: 0; color: var(--amber); font-size: 0.7rem; }

/* === MANAGEMENT PLANE === */
.management-plane { padding: 5rem 2rem; background: var(--navy); }
.mp-inner { max-width: 1000px; margin: 0 auto; }
.mp-header { text-align: center; margin-bottom: 3rem; }
.mp-headline {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  color: var(--cream);
  font-weight: 400;
  line-height: 1.2;
}
.mp-diagram { display: flex; flex-direction: column; gap: 0; }
.mp-plane-top {
  background: var(--navy-light);
  border: 1px solid rgba(245,166,35,0.3);
  border-radius: 12px 12px 0 0;
  padding: 1.75rem 2rem;
}
.mp-plane-label { font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--amber); font-weight: 600; margin-bottom: 1.25rem; }
.mp-capabilities { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.mp-cap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(245,166,35,0.08);
  border: 1px solid rgba(245,166,35,0.2);
  border-radius: 8px;
  padding: 0.5rem 0.85rem;
  font-size: 0.82rem;
  color: var(--cream);
  font-weight: 500;
}
.cap-icon { color: var(--amber); display: flex; align-items: center; }
.mp-plane-border { height: 3px; background: linear-gradient(90deg, transparent, var(--amber), transparent); opacity: 0.5; }
.mp-exec-layer {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 12px 12px;
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}
.mp-exec-label { font-size: 0.7rem; color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase; flex-shrink: 0; }
.mp-exec-nodes { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.mp-exec-node {
  background: var(--navy);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.85rem;
  font-size: 0.78rem;
  color: rgba(250,246,240,0.6);
}

/* === DECISION LEDGER === */
.decision-ledger { padding: 5rem 2rem; background: linear-gradient(180deg, var(--navy) 0%, #0d1829 100%); }
.dl-inner { max-width: 1100px; margin: 0 auto; }
.dl-content { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.dl-headline {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  color: var(--cream);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 1.25rem;
}
.dl-body { font-size: 0.92rem; color: var(--muted); line-height: 1.7; margin-bottom: 1.5rem; }
.dl-features { display: flex; flex-direction: column; gap: 0.65rem; }
.dl-feat { display: flex; align-items: center; gap: 0.75rem; }
.dl-feat-check { color: var(--amber); flex-shrink: 0; }
.dl-feat span:last-child { font-size: 0.85rem; color: rgba(250,246,240,0.7); }

/* Ledger Panel */
.ledger-panel {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.ledger-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: rgba(245,166,35,0.05);
}
.ledger-title { font-size: 0.85rem; font-weight: 600; color: var(--cream); }
.ledger-badge {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #51cf66;
  background: rgba(81,207,102,0.12);
  border: 1px solid rgba(81,207,102,0.3);
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
}
.ledger-entries { display: flex; flex-direction: column; }
.ledger-entry { padding: 1rem 1.5rem; border-bottom: 1px solid rgba(255,255,255,0.04); }
.ledger-entry:last-child { border-bottom: none; }
.entry-meta { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.3rem; }
.entry-time { font-size: 0.7rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.entry-mode { font-size: 0.65rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--amber); font-weight: 600; }
.entry-body { font-size: 0.82rem; color: var(--cream); font-weight: 500; margin-bottom: 0.25rem; }
.entry-detail { font-size: 0.72rem; color: var(--muted); }
.ledger-entry-ok     { border-left: 3px solid #51cf66; }
.ledger-entry-esc    { border-left: 3px solid #fcc419; }
.ledger-entry-drift  { border-left: 3px solid #f5a623; }
.ledger-entry-canary { border-left: 3px solid #74c0fc; }

/* === CLOSING === */
.closing { padding: 6rem 2rem; background: var(--navy); position: relative; overflow: hidden; }
.closing::before {
  content: '';
  position: absolute;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(245,166,35,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.closing-inner { max-width: 900px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 3rem; }
.closing-eyebrow { margin-bottom: 1rem; }
.closing-headline {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--cream);
  font-weight: 400;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}
.closing-body { font-size: 1.05rem; color: var(--muted); line-height: 1.75; max-width: 640px; }
.closing-orb svg { width: 160px; height: 160px; }

/* === FOOTER === */
.site-footer { padding: 2.5rem 2rem; border-top: 1px solid var(--border); }
.footer-inner { max-width: 1100px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; gap: 0.75rem; text-align: center; }
.footer-brand { display: flex; align-items: center; gap: 0.5rem; }
.footer-name { font-size: 0.9rem; font-weight: 600; color: var(--cream); }
.footer-tagline { font-size: 0.82rem; color: var(--muted); }
.footer-meta { font-size: 0.75rem; color: rgba(122,136,153,0.6); display: flex; gap: 0.5rem; align-items: center; }
.footer-sep { color: var(--amber); }

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .hero-inner, .dl-content { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-diagram { display: none; }
  .problem-grid { grid-template-columns: 1fr; }
  .exec-mode-cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .hero { padding: 3rem 1.25rem 2.5rem; }
  .problem, .exec-modes, .management-plane, .decision-ledger, .closing { padding: 3.5rem 1.25rem; }
  .exec-mode-cards { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .hero-stat-divider { display: none; }
  .mp-exec-layer { flex-direction: column; align-items: flex-start; gap: 1rem; }
}