/* onpremai-demo — single shared stylesheet.
   Lean. Three pages: index (lean-page), demo, review. No framework. */

:root {
  --bg: #0a0a0a;
  --bg-card: #111;
  --bg-card-hi: #161616;
  --border: #2a2a2a;
  --border-hi: #4a4a4a;
  --text: #f0f0f0;
  --text-dim: #8a8a8a;
  --accent: #c64a1f;          /* rust-oxide — single accent */
  --accent-hi: #e35a2c;
  --info: #00c2ff;            /* links / focus only */
  --ok: #3fbf7f;
  --warn: #f5a623;
  --danger: #ef4f4f;
  --classification-bg: #007a33;

  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --maxw: 1080px;
  --target-min: 56px;

  /* Modular type scale — 1.25 ratio, base 16px. Per UI Pro Max
     skills/ui-ux-pro-max/data/styles.csv entry 1 (Minimalism & Swiss Style)
     "clear type hierarchy" + entry 17 (Brutalist Raw) "stark monospace". */
  --type-xs:    0.8125rem;  /* 13px — captions, footnotes */
  --type-sm:    0.875rem;   /* 14px — small body, mono labels */
  --type-base:  1rem;       /* 16px — body */
  --type-md:    1.125rem;   /* 18px — lead text */
  --type-lg:    1.5rem;     /* 24px — h3 sub-display */
  --type-xl:    2.25rem;    /* 36px — h2 */
  --type-xxl:   3.5rem;     /* 56px — h1 mobile floor */
  --type-hero:  clamp(3.5rem, 8vw, 6.5rem); /* 56–104px — hero h1 */
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--info); text-decoration: none; }
a:hover { color: #66d8ff; text-decoration: underline; text-underline-offset: 3px; }

/* ── Classification banner (top of every page) ──────────────────────── */
.classification-banner {
  position: sticky; top: 0; z-index: 100;
  background: var(--classification-bg);
  color: #fff;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-align: center;
  padding: 6px 12px;
  text-transform: uppercase;
}

/* ── Lean nav (index.html) ──────────────────────────────────────────── */
.lean-nav {
  border-bottom: 1px solid var(--border);
  padding: 22px 40px;
  display: flex; justify-content: space-between; align-items: center;
  position: sticky; top: 24px; z-index: 50;
  background: var(--bg);
}
.lean-nav .brand {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--text);
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 2px;
}
.lean-nav nav { display: flex; gap: 28px; align-items: center; }
.lean-nav nav a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-transform: uppercase;
  text-decoration: none;
}
.lean-nav nav a:hover { color: var(--text); border-bottom: 1px solid var(--accent); padding-bottom: 1px; }

/* ── Demo / review header (header.site) ─────────────────────────────── */
header.site {
  border-bottom: 1px solid var(--border);
  padding: 18px 32px;
  display: flex; justify-content: space-between; align-items: center;
}
header.site .brand {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
header.site .brand .dot { color: var(--accent); }
header.site nav { display: flex; gap: 24px; align-items: center; }
header.site nav a {
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
header.site nav a:hover { color: var(--text); text-decoration: none; }

/* ── Layout ─────────────────────────────────────────────────────────── */
.lean-main, main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 80px 40px 96px;
}

/* ── Type — modular scale (1.25 ratio) ──────────────────────────────── */
h1 {
  font-family: 'Inter', sans-serif;
  font-weight: 900;
  font-size: var(--type-hero);
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin: 0 0 28px;
  text-wrap: balance;
}
h2 {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: var(--type-xl);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  text-wrap: balance;
}
h3 {
  font-family: var(--mono);
  font-size: var(--type-sm);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 12px;
}
p { margin: 0 0 14px; color: var(--text); font-size: var(--type-base); }
p.lead {
  font-family: var(--mono);
  font-size: var(--type-md);
  color: var(--text);
  max-width: 640px;
  line-height: 1.7;
}
small { color: var(--text-dim); font-size: var(--type-xs); }
.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 24px;
}

/* ── Buttons ────────────────────────────────────────────────────────── */
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin: 32px 0; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: var(--target-min);
  padding: 14px 26px;
  border-radius: 0;
  background: transparent;
  border: 1px solid var(--text);
  color: var(--text);
  font-family: var(--mono);
  font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.12em;
  text-decoration: none;
  cursor: pointer;
  transition: background .15s, color .15s, transform .1s, box-shadow .1s;
}
.btn:hover {
  background: var(--text); color: var(--bg);
  text-decoration: none;
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--accent);
}
.btn.primary {
  background: var(--accent); border-color: var(--accent); color: #fff;
}
.btn.primary:hover {
  background: var(--accent-hi); border-color: var(--accent-hi); color: #fff;
  box-shadow: 3px 3px 0 var(--text);
}
.btn.small {
  padding: 8px 14px; font-size: 11px; min-height: 36px; letter-spacing: 0.1em;
}
.btn[disabled] { opacity: 0.4; cursor: not-allowed; }

/* ── Lean page sections (index.html) ────────────────────────────────── */
.lean-hero {
  margin: 0 0 80px;
  max-width: 860px;
  position: relative;
  padding: 28px 32px 32px;
}
/* HUD corner brackets — UI Pro Max styles.csv entry 51 (HUD/Sci-Fi FUI)
   "decorative tech markers, fine line drawing". 4 corners, pure CSS. */
.lean-hero::before,
.lean-hero::after,
.lean-hero > .hud-tl,
.lean-hero > .hud-br {
  content: "";
  position: absolute;
  width: 24px; height: 24px;
  border-color: var(--accent);
  border-style: solid;
  pointer-events: none;
}
.lean-hero::before { top: 0; left: 0;  border-width: 1px 0 0 1px; }
.lean-hero::after  { top: 0; right: 0; border-width: 1px 1px 0 0; }
.lean-hero > .hud-tl { bottom: 0; left: 0;  border-width: 0 0 1px 1px; }
.lean-hero > .hud-br { bottom: 0; right: 0; border-width: 0 1px 1px 0; }

.lean-hero .cta-row { margin: 28px 0 0; }

/* ── Display brand mark + crosshair reticle (hero) ──────────────────── */
.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin: 0 0 36px;
}
.brand-mark {
  font-family: 'Inter', sans-serif;
  font-weight: 900;
  font-size: clamp(2rem, 5.2vw, 4.25rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--text);
  text-transform: uppercase;
  display: inline-flex;
  align-items: baseline;
  gap: 0.04em;
  user-select: none;
}
.brand-mark .dot {
  color: var(--accent);
  font-weight: 700;
  margin: 0 0.05em;
  transform: translateY(-0.08em);
}
.brand-mark .brand-ai {
  color: var(--accent);
  text-shadow: 0 0 14px rgba(198, 74, 31, 0.35);
}
.crosshair {
  flex-shrink: 0;
  width: clamp(72px, 9vw, 112px);
  height: clamp(72px, 9vw, 112px);
  color: var(--accent);
  opacity: 0.85;
  filter: drop-shadow(0 0 6px rgba(198, 74, 31, 0.25));
  animation: reticleSweep 6s cubic-bezier(.4,0,.2,1) infinite;
  transform-origin: 50% 50%;
}
@keyframes reticleSweep {
  0%, 92%, 100% { transform: rotate(0deg); }
  96%           { transform: rotate(8deg); }
}
@media (prefers-reduced-motion: reduce) {
  .crosshair { animation: none; }
}
@media (max-width: 720px) {
  .brand-row { flex-direction: column; align-items: flex-start; gap: 20px; }
  .crosshair { width: 80px; height: 80px; align-self: flex-end; margin-top: -16px; }
}

/* Blinking cursor next to the hero headline — UI Pro Max styles.csv entry 73
   (Terminal CLI) "blinking cursor (500ms opacity loop)". */
.lean-hero h1 .cursor {
  display: inline-block;
  width: 0.45em;
  height: 0.85em;
  margin-left: 0.08em;
  background: var(--accent);
  vertical-align: -0.05em;
  animation: cursorBlink 1.05s steps(1) infinite;
}
@keyframes cursorBlink {
  0%, 50%   { opacity: 1; }
  51%, 100% { opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .lean-hero h1 .cursor { animation: none; opacity: 1; }
}

.lean-block {
  margin: 80px 0;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.lean-block h2 { margin-bottom: 20px; }

/* Scanline overlay — UI Pro Max styles.csv entry 41 (Cyberpunk UI) +
   entry 73 (Terminal CLI), --scanline-opacity: 0.05. Scoped to .lean-page
   so demo.html / review.html stay clean. */
body.lean-page::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 200;
  background: repeating-linear-gradient(
    0deg,
    transparent 0 2px,
    rgba(255, 255, 255, 0.025) 2px 3px
  );
}
@media (prefers-reduced-motion: reduce) {
  body.lean-page::after { display: none; }
}

/* ── Stat block ─────────────────────────────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0;
  border: 1px solid var(--border);
  margin: 56px 0;
}
.stat {
  padding: 32px 28px;
  border-right: 1px solid var(--border);
}
.stat:last-child { border-right: 0; }
.stat .value {
  display: block;
  font-family: var(--mono);
  font-size: 36px; font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  line-height: 1;
}
.stat .label {
  font-family: var(--mono);
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* ── ASCII diagram (airlock pipeline) ───────────────────────────────── */
.ascii-diagram {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.4;
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 22px 24px;
  overflow-x: auto;
  margin: 32px 0;
  white-space: pre;
}

/* ── Stage list (numbered airlock description) ──────────────────────── */
.stage-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
}
.stage-list li {
  position: relative;
  padding: 16px 0 16px 56px;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
}
.stage-list li:last-child { border-bottom: 0; }
.stage-list .sn {
  position: absolute; left: 0; top: 18px;
  width: 36px; height: 36px;
  border: 1px solid var(--accent);
  display: grid; place-items: center;
  font-weight: 700;
  font-size: 13px;
  color: var(--accent);
}
.stage-list strong { color: var(--text); font-weight: 700; }
.stage-list code {
  background: var(--bg-card); padding: 1px 6px; font-size: 12px;
  color: var(--accent); border: 1px solid var(--border);
}

/* ── Use-case grid ──────────────────────────────────────────────────── */
.use-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0;
  margin: 32px 0 0;
  border: 1px solid var(--border);
}
.use {
  padding: 28px 28px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.use:last-child { border-right: 0; }
.use h3 { color: var(--accent); margin-bottom: 12px; }
.use p { font-family: var(--mono); font-size: 13px; line-height: 1.7; color: var(--text); margin: 0; }

/* ── Footer (lean) ──────────────────────────────────────────────────── */
.lean-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}
.lean-footer .footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 40px;
}
.ff-row {
  display: flex; flex-wrap: wrap; gap: 24px; align-items: center;
  font-family: var(--mono); font-size: 12px;
  letter-spacing: 0.08em; text-transform: uppercase;
}
.ff-row > span:first-child {
  font-weight: 700; color: var(--text); letter-spacing: 0.18em; margin-right: 8px;
}
.ff-row a {
  color: var(--text-dim); text-decoration: none;
  border-bottom: 1px solid transparent;
}
.ff-row a:hover { color: var(--text); border-bottom-color: var(--accent); }
.ff-legal {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
  margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--border);
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-dim);
}

/* ── Cards / banners (used by demo + review) ────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 24px 28px;
  margin: 20px 0;
}
.card.hi { background: var(--bg-card-hi); border-color: var(--border-hi); }

.banner {
  background: rgba(198, 74, 31, 0.06);
  border: 1px solid rgba(198, 74, 31, 0.4);
  border-left: 3px solid var(--accent);
  padding: 14px 18px; margin: 24px 0;
  font-family: var(--mono);
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
}
.banner strong { color: var(--accent); }

/* ── Form controls (demo) ───────────────────────────────────────────── */
textarea, input[type=text], select {
  width: 100%; padding: 14px;
  border-radius: 0;
  background: var(--bg-card-hi);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  resize: vertical;
}
textarea { font-family: var(--mono); font-size: 13px; min-height: 160px; }
textarea:focus, input[type=text]:focus, select:focus {
  outline: 2px solid var(--info); outline-offset: -2px;
}
label {
  display: block;
  font-family: var(--mono);
  font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--text-dim); margin-bottom: 8px;
}

/* ── Code / pre / draft markdown ────────────────────────────────────── */
code, pre { font-family: var(--mono); font-size: 13px; }
pre {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 0; padding: 16px 18px; overflow-x: auto;
}
.draft-md {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 0; padding: 22px 26px; line-height: 1.65;
}
.draft-md h2 {
  font-size: 16px; margin: 18px 0 6px; color: var(--accent);
  text-transform: uppercase; letter-spacing: 0.06em;
  font-family: var(--mono);
}
.draft-md h2:first-child { margin-top: 0; }
.draft-md p, .draft-md li { font-size: 14px; }
.draft-md ol, .draft-md ul { padding-left: 22px; }

/* ── Badges (demo + review) ─────────────────────────────────────────── */
.badge {
  display: inline-block; padding: 4px 10px;
  border-radius: 0; font-size: 11px;
  font-weight: 700; font-family: var(--mono);
  letter-spacing: 0.08em; text-transform: uppercase;
}
.badge.ok { background: rgba(63, 191, 127, 0.12); color: var(--ok); border: 1px solid rgba(63, 191, 127, 0.4); }
.badge.warn { background: rgba(245, 166, 35, 0.12); color: var(--warn); border: 1px solid rgba(245, 166, 35, 0.4); }
.badge.danger { background: rgba(239, 79, 79, 0.12); color: var(--danger); border: 1px solid rgba(239, 79, 79, 0.4); }
.badge.dim { background: rgba(138, 138, 138, 0.1); color: var(--text-dim); border: 1px solid var(--border); }

/* ── Stage progress (demo flow) ─────────────────────────────────────── */
.stages { display: grid; gap: 4px; margin: 24px 0; }
.stage {
  display: grid; grid-template-columns: 36px 1fr auto; align-items: center; gap: 14px;
  padding: 14px 18px; background: var(--bg-card); border: 1px solid var(--border);
  font-size: 14px;
}
.stage .icon {
  width: 24px; height: 24px;
  background: var(--border); display: grid; place-items: center;
  font-size: 12px; font-family: var(--mono); font-weight: 700;
}
.stage.done .icon { background: var(--ok); color: #001; }
.stage.fail .icon { background: var(--danger); color: #fff; }
.stage.pending .icon { background: var(--border); color: var(--text-dim); }
.stage .desc { color: var(--text-dim); font-size: 12px; font-family: var(--mono); }
.stage .status { font-family: var(--mono); font-size: 12px; color: var(--text-dim); }

/* ── Tables (review) ────────────────────────────────────────────────── */
table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 14px; }
th, td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--border); }
th {
  color: var(--text-dim); font-weight: 700;
  font-family: var(--mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.1em;
}
.queue-row { cursor: pointer; }
.queue-row:hover { background: var(--bg-card-hi); }
.queue-row td { font-size: 13px; }

.audit-event {
  display: grid; grid-template-columns: 200px 1fr; gap: 18px; padding: 10px 0;
  border-bottom: 1px solid var(--border); font-size: 13px;
}
.audit-event:last-child { border-bottom: 0; }
.audit-event .ts { font-family: var(--mono); color: var(--text-dim); font-size: 12px; }

/* ── Restrained entrance animation (one, on load) ───────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.lean-page .lean-hero,
.lean-page .stat-grid,
.lean-page .lean-block,
.lean-page .lean-footer {
  animation: fadeUp .55s cubic-bezier(.2, .7, .2, 1) both;
}
.lean-page .lean-hero   { animation-delay: 0.05s; }
.lean-page .stat-grid   { animation-delay: 0.18s; }
.lean-page .lean-block:nth-of-type(2) { animation-delay: 0.28s; }
.lean-page .lean-block:nth-of-type(3) { animation-delay: 0.36s; }
.lean-page .lean-block:nth-of-type(4) { animation-delay: 0.44s; }

/* ── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 720px) {
  .lean-nav { padding: 16px 20px; }
  .lean-nav nav { gap: 16px; }
  .lean-nav nav a:not(.btn) { display: none; }
  .lean-main, main { padding: 48px 20px 64px; }
  h1 { font-size: 44px; }
  h2 { font-size: 26px; }
  .lean-block { margin: 56px 0; padding-top: 28px; }
  .audit-event { grid-template-columns: 1fr; }
  .lean-footer .footer-inner { padding: 0 20px; }
  .stage-list li { padding-left: 48px; }
  .stage-list .sn { width: 32px; height: 32px; }
}