/* GraftOS P0 landing — original markup/styles. DEMO only. */
:root {
  --bg: #0b0f14;
  --bg-elev: #121820;
  --bg-card: #161d27;
  --border: #243041;
  --text: #e8eef6;
  --muted: #8b9bb0;
  --teal: #2dd4bf;
  --teal-dim: rgba(45, 212, 191, 0.15);
  --amber: #f59e0b;
  --amber-dim: rgba(245, 158, 11, 0.15);
  --red: #ef4444;
  --red-dim: rgba(239, 68, 68, 0.2);
  --green: #22c55e;
  --mono: "SF Mono", "Fira Code", "Consolas", ui-monospace, monospace;
  --sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --banner-h: 2.75rem;
  --radius: 10px;
  --max: 1080px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  padding-top: var(--banner-h);
}

a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }

.demo-banner {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--banner-h);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: #7f1d1d;
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-align: center;
  padding: 0 1rem;
  border-bottom: 1px solid #991b1b;
}
.demo-banner span.badge {
  background: #fff;
  color: #7f1d1d;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  letter-spacing: 0.06em;
}

.wrap { width: min(var(--max), calc(100% - 2rem)); margin: 0 auto; }

/* Nav */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}
.logo {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text);
  letter-spacing: -0.02em;
  text-decoration: none;
}
.logo span { color: var(--teal); }
.nav-links { display: flex; gap: 1.5rem; align-items: center; font-size: 0.9rem; }
.nav-links a { color: var(--muted); text-decoration: none; }
.nav-links a:hover { color: var(--text); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.15rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none !important;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.btn-primary { background: var(--teal); color: #042f2e; }
.btn-primary:hover { background: #5eead4; color: #042f2e; }
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--muted); }

/* Hero */
.hero { padding: 4rem 0 3rem; }
.eyebrow {
  color: var(--teal);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 0.75rem;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  max-width: 18ch;
}
.hero .lede {
  color: var(--muted);
  font-size: 1.125rem;
  max-width: 42rem;
  margin: 0 0 1.75rem;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 0.75rem; }
.trust-line { color: var(--muted); font-size: 0.8rem; margin: 0; }

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding: 0.5rem 0 0.5rem;
}
.stat {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
}
.stat strong {
  display: block;
  font-size: 1.75rem;
  color: var(--teal);
  letter-spacing: -0.02em;
}
.stat span { color: var(--muted); font-size: 0.85rem; }
.stats-caption {
  color: var(--muted);
  font-size: 0.75rem;
  margin: 0.75rem 0 0;
  font-style: italic;
}

/* Sections */
section { padding: 3.5rem 0; }
section h2 {
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  max-width: 28ch;
}
.section-muted { color: var(--muted); max-width: 40rem; margin: 0 0 1.5rem; }
.problem-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}
.problem-list li {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--teal);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.9rem 1.1rem;
  color: var(--muted);
}
.problem-list li strong { color: var(--text); }

/* Terminal */
.terminal-wrap { position: relative; margin-top: 1.5rem; }
.terminal {
  background: #06090d;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  font-family: var(--mono);
  font-size: 0.8rem;
  box-shadow: 0 20px 50px rgba(0,0,0,0.45);
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 0.9rem;
  background: #0e131a;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.7rem;
}
.dot { width: 8px; height: 8px; border-radius: 50%; }
.dot.r { background: #ef4444; }
.dot.y { background: #eab308; }
.dot.g { background: #22c55e; }
.terminal-body { padding: 1.1rem 1.2rem 1.3rem; line-height: 1.7; }
.t-prompt { color: var(--teal); }
.t-ok { color: var(--green); }
.t-watch { color: var(--amber); }
.t-flag { color: var(--red); }
.t-auto { color: #a78bfa; }
.t-sync { color: #38bdf8; }
.t-dim { color: #5a6a7e; }
.terminal-watermark {
  position: absolute;
  top: 2.5rem;
  right: 1rem;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: rgba(239, 68, 68, 0.35);
  pointer-events: none;
  transform: rotate(-8deg);
}
.cursor {
  display: inline-block;
  width: 0.55ch;
  height: 1em;
  background: var(--teal);
  vertical-align: text-bottom;
  animation: blink 1.1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.4rem;
}
.card .icon {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--teal-dim);
  color: var(--teal);
  font-size: 1rem;
  margin-bottom: 0.85rem;
}
.card h3 { margin: 0 0 0.45rem; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.92rem; }

/* Demo preview */
.panel-preview {
  margin-top: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
}
.panel-preview table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.panel-preview th,
.panel-preview td {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
}
.panel-preview th {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: #0e131a;
}
.panel-preview tr:last-child td { border-bottom: none; }
.badge-state {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
}
.badge-ok { background: rgba(34, 197, 94, 0.15); color: var(--green); }
.badge-watch { background: var(--amber-dim); color: var(--amber); }
.badge-flag { background: var(--red-dim); color: var(--red); }
.synth { font-family: var(--mono); font-size: 0.75rem; color: var(--muted); }
.panel-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1rem;
  background: #0e131a;
}

/* Closing */
.closing {
  text-align: center;
  padding: 4rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.closing h2 { margin-left: auto; margin-right: auto; }
.closing .section-muted { margin-left: auto; margin-right: auto; }
.closing .btn { margin-top: 0.5rem; }

/* Footer */
footer {
  padding: 2.5rem 0 3rem;
  color: var(--muted);
  font-size: 0.8rem;
}
footer .legal {
  max-width: 48rem;
  margin: 0 0 1rem;
  line-height: 1.6;
}
footer .meta { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; }

/* Demo page extras */
.demo-layout { padding: 2rem 0 4rem; }
.demo-layout h1 { font-size: 1.75rem; margin: 0 0 0.35rem; letter-spacing: -0.02em; }
.demo-sub { color: var(--muted); margin: 0 0 1.5rem; font-size: 0.95rem; }
.grid-2 {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1rem;
}
.panel-full table { font-size: 0.82rem; }
.side-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  margin-bottom: 1rem;
}
.side-block h3 {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 600;
}
.log {
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.65;
  color: var(--muted);
  max-height: 220px;
  overflow: auto;
}
.log .ev { margin-bottom: 0.55rem; padding-bottom: 0.55rem; border-bottom: 1px solid var(--border); }
.log .ev:last-child { border-bottom: none; margin: 0; padding: 0; }
.checklist { list-style: none; margin: 0; padding: 0; font-size: 0.85rem; }
.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
}
.checklist li:last-child { border-bottom: none; }
.checklist .done { color: var(--green); }
.rule-box {
  font-size: 0.8rem;
  color: var(--muted);
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 0.75rem 0.9rem;
  margin-top: 0.75rem;
}
.spark {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--teal);
  letter-spacing: -0.05em;
}

@media (max-width: 800px) {
  .stats, .features-grid, .grid-2 { grid-template-columns: 1fr; }
  .nav-links a:not(.btn) { display: none; }
  .hero h1 { max-width: none; }
  .panel-preview { overflow-x: auto; }
}