/* normalize */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
pre, code { font-family: inherit; }
pre { max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { background: none; border: none; cursor: pointer; font: inherit; }

/* ── design tokens ─────────────────────────────────────────── */
:root {
  --bg:          #0a0c0a;
  --text:        #cfd8c8;
  --bright:      #e8efe2;
  --dim:         #5a6a5a;
  --border:      #1a1e1a;
  --border-hi:   #2a2e2a;
  --panel:       #10130f;
  --panel-hi:    #161a14;
  --green:       #00ff88;
  --green-glow:  rgba(0,255,136,0.25);
  --green-dim:   #0a8a4f;
  --mono: "JetBrains Mono", "IBM Plex Mono", "SF Mono", ui-monospace, monospace;
}

/* ── base ───────────────────────────────────────────────────── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  min-height: 100vh;
  overflow-x: hidden; /* guard: page never scrolls horizontally (pre blocks scroll internally) */
}

/* ── artboard: fluid, centered, grows vertically ────────────── */
.artboard {
  max-width: 1180px;
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

/* ── keyframes ──────────────────────────────────────────────── */
@keyframes blink   { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
@keyframes flicker { 0%, 100% { opacity: 1; } 48% { opacity: 1; } 50% { opacity: 0.94; } 52% { opacity: 1; } }
@keyframes scan    { 0% { transform: translateY(-100%); } 100% { transform: translateY(300%); } }
@keyframes reveal  { from { opacity: 0.18; filter: blur(6px) saturate(0); } to { opacity: 1; filter: none; } }

/* ── CRT: a single fixed full-viewport layer over the whole scroll ── */
.crt-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  /* vignette */
  background: radial-gradient(ellipse at center, transparent 52%, rgba(0,0,0,0.5) 100%);
  animation: flicker 7s infinite;
}
.crt-overlay::before {          /* scanlines */
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255,255,255,0.025) 0px,
    rgba(255,255,255,0.025) 1px,
    transparent 1px,
    transparent 3px
  );
}
.crt-overlay::after {           /* slow green scan sweep */
  content: '';
  position: absolute;
  inset: 0;
  height: 30%;
  background: linear-gradient(
    rgba(0,255,136,0) 0%,
    rgba(0,255,136,0.04) 50%,
    rgba(0,255,136,0) 100%
  );
  animation: scan 8s linear infinite;
}

/* ── status bar (sticky — frames the whole scroll like a TUI window) ── */
.status-bar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px clamp(20px, 5vw, 80px);
  border-bottom: 1px solid var(--border);
  background: rgba(8,10,8,0.92);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--dim);
}
.status-bar__left,
.status-bar__right { display: flex; align-items: center; gap: 24px; }
.status-bar .accent { color: var(--green); }

/* ── content ────────────────────────────────────────────────── */
.content {
  position: relative;
  z-index: 1;
  padding: 56px clamp(20px, 5vw, 80px) 64px;
}

/* section rhythm */
.modes, .demo-terminal, .editing, .consistency, .models, .scripting { margin-top: 72px; }

/* ── ASCII wordmark ─────────────────────────────────────────── */
.ascii-logo {
  display: block;
  color: var(--green);
  text-shadow: 0 0 14px var(--green-glow), 0 0 2px var(--green);
  font-size: clamp(8px, 1.75vw, 18px);
  line-height: 1.05;
  font-weight: 700;
  letter-spacing: 0;
  white-space: pre;
  overflow-x: auto;                 /* only the wordmark scrolls on tiny screens — never the page */
}
.ascii-rule { color: var(--dim); font-size: clamp(9px, 1.1vw, 12px); margin-top: 18px; letter-spacing: 0.15em; white-space: pre; overflow-x: auto; }

/* ── headline ───────────────────────────────────────────────── */
.headline {
  font-size: clamp(38px, 5.6vw, 56px);
  font-weight: 700;
  line-height: 1.04;
  margin-top: 40px;
  color: var(--bright);
  letter-spacing: -0.015em;
  max-width: 900px;
}
.headline .accent { color: var(--green); text-shadow: 0 0 12px var(--green-glow); }

/* ── body text (raised contrast: --text, not --dim) ─────────── */
.body-text {
  font-size: 17px;
  color: var(--text);
  max-width: 700px;
  line-height: 1.6;
  margin: 24px 0 0;
}

/* hero sub-headline: the most important read — full brightness */
.hero-sub {
  color: var(--bright);
  font-size: 18px;
  max-width: 660px;
  margin-top: 28px;
}

/* ── CTA row ────────────────────────────────────────────────── */
.cta-row { display: flex; gap: 14px; align-items: center; margin: 36px 0 16px; flex-wrap: wrap; }
.cta-note { color: var(--text); font-size: 13px; letter-spacing: 0.02em; }

.cta-install {
  background: #000;
  border: 1px solid var(--green);
  padding: 14px 22px;
  font-size: 14px;
  font-family: var(--mono);
  color: var(--bright);
  letter-spacing: 0.02em;
  box-shadow: 0 0 0 1px var(--green), 0 0 24px var(--green-glow);
  white-space: nowrap;
}
.cta-install .dollar { color: var(--green); margin-right: 10px; }
.cta-install .pkg    { color: var(--green); }
.cta-install .copy-icon { display: inline-flex; align-items: center; margin-left: 18px; color: var(--dim); transition: color 0.15s; }
.cta-install:hover .copy-icon { color: var(--green); }
.cta-install .icon-check { display: none; }
.cta-install.copied .icon-copy  { display: none; }
.cta-install.copied .icon-check { display: inline; color: var(--green); }

.cta-link {
  border: 1px solid var(--border-hi);
  padding: 14px 22px;
  font-size: 13px;
  font-family: var(--mono);
  color: var(--text);
  letter-spacing: 0.04em;
  transition: color 0.15s, border-color 0.15s;
}
.cta-link:hover { color: var(--green); border-color: var(--green); }

/* ── section label rule ─────────────────────────────────────── */
.section-label {
  color: var(--green);
  font-size: 11px;
  letter-spacing: 0.22em;
  margin-bottom: 24px;
  white-space: pre;
  overflow-x: auto;
}

/* ── flow diagram ───────────────────────────────────────────── */
.flow-diagram { color: var(--text); font-size: 13px; line-height: 1.6; letter-spacing: 0; white-space: pre; overflow-x: auto; }

/* ── two-mode diptych ───────────────────────────────────────── */
.diptych {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  border: 1px solid var(--border);
  background: var(--border);     /* the 1px gap reads as a divider — one split-pane TUI */
}
.mode-panel { background: var(--panel); padding: 28px 26px; min-width: 0; transition: background 0.15s, box-shadow 0.15s; }
.mode-panel:hover { background: var(--panel-hi); box-shadow: inset 3px 0 0 var(--green); }
.mode-panel__label { color: var(--green); font-size: 11px; letter-spacing: 0.18em; margin-bottom: 14px; }
.mode-panel__promise { color: var(--bright); font-size: 16px; line-height: 1.4; margin-bottom: 20px; }
.mode-panel__flow { font-size: 12.5px; }

/* ── scene-strip motif (consistency band) ───────────────────── */
.scene-strip { display: flex; align-items: center; flex-wrap: wrap; gap: 0; font-size: 12px; }
.scene-join { color: var(--dim); }
.ref-cell { border: 1px solid var(--green-dim); padding: 3px 10px; color: var(--text); letter-spacing: 0.08em; }
.ref-glyph { color: var(--green); text-shadow: 0 0 8px var(--green-glow); margin-right: 3px; }

/* ── demo terminal ──────────────────────────────────────────── */
.demo-terminal { background: #000; border: 1px solid var(--border-hi); position: relative; }
.demo-terminal__header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 16px; background: #060805; border-bottom: 1px solid var(--border);
  font-size: 11px; color: var(--text); letter-spacing: 0.12em;
}
.demo-terminal__header span:last-child { color: var(--green); }
.demo-terminal__body { display: grid; grid-template-columns: 1fr 1fr; }
/* fixed height + bottom-anchored: the transcript scrolls like a real terminal, and the
   preview/lighthouse next to it never changes size as lines type in */
.demo-terminal__output {
  padding: 24px 22px; font-size: 14px; line-height: 1.85;
  height: 320px; overflow: hidden;
  display: flex; flex-direction: column; justify-content: flex-end;
}
.demo-terminal__output > * { margin: 0; padding: 0; }

.demo-terminal__line--you,
.demo-terminal__line--vincent,
.demo-terminal__line--ok,
.demo-terminal__line--scene,
.demo-terminal__line--dim { white-space: pre-wrap; line-height: 1.85; display: block; margin: 0; padding: 0; }
.demo-terminal__line--you     { color: var(--bright); }
.demo-terminal__line--vincent { color: var(--green); }
.demo-terminal__line--ok      { color: var(--green); }
.demo-terminal__line--scene   { color: var(--text); }
.demo-terminal__line--dim     { color: var(--dim); }

.demo-terminal__preview { position: relative; border-left: 1px solid var(--border); background: #040502; height: 320px; }

/* storyboard strip → cross-fades to the rendered video tile */
.storyboard-tile, .video-tile { position: absolute; inset: 16px; transition: opacity 0.6s ease, filter 0.6s ease; }
.storyboard-tile {
  background: #000; border: 1px solid var(--border-hi);
  padding: 14px 16px; display: flex; flex-direction: column; gap: 12px; opacity: 1;
}
.storyboard-tile.faded { opacity: 0; }
.storyboard-tile__label { color: var(--green); font-size: 10px; letter-spacing: 0.15em; }
.storyboard-tile__scenes { display: flex; flex-direction: column; gap: 8px; }
.sb-scene { display: flex; gap: 10px; align-items: center; border: 1px solid var(--border); padding: 7px 10px; opacity: 0.28; transition: opacity 0.35s, border-color 0.35s; }
.sb-scene.on { opacity: 1; border-color: var(--green-dim); }
.sb-scene__n { color: var(--green); font-size: 11px; width: 12px; }
.sb-scene__t { color: var(--text); font-size: 12px; }

/* ── blinking cursor ────────────────────────────────────────── */
.cursor {
  display: inline-block; width: 0.55em; height: 1em; background: var(--green);
  vertical-align: text-bottom; animation: blink 1.05s steps(1) infinite;
  box-shadow: 0 0 8px var(--green-glow); margin-left: 2px;
}

/* ── video tile ─────────────────────────────────────────────── */
.video-tile { background: #000; border: 1px solid var(--border-hi); overflow: hidden; opacity: 0; filter: blur(6px) saturate(0); }
.video-tile.revealed { opacity: 1; filter: none; }
.video-tile__label { position: absolute; font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; }
.video-tile__rec    { top: 10px; left: 12px; color: var(--green); text-shadow: 0 0 6px var(--green-glow); }
.video-tile__res    { top: 10px; right: 12px; color: var(--dim); }
.video-tile__name   { bottom: 10px; left: 12px; color: var(--dim); }
.video-tile__format { bottom: 10px; right: 12px; color: var(--dim); }
.video-tile__progress-track { position: absolute; bottom: 28px; left: 12px; right: 12px; height: 2px; background: rgba(255,255,255,0.08); }
.video-tile__progress-fill { height: 100%; width: 0%; background: var(--green); box-shadow: 0 0 8px var(--green-glow); transition: width 0.6s ease; }
.video-tile.revealed .video-tile__progress-fill { width: 88%; }

/* ── after-render editing chips ─────────────────────────────── */
.editing__lead { margin-bottom: 22px; }
.chip-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.chip { border: 1px solid var(--border-hi); background: var(--panel); padding: 11px 14px; color: var(--text); font-size: 13px; letter-spacing: 0.02em; transition: border-color 0.15s, color 0.15s; }
.chip::before { content: "› "; color: var(--green); }
.chip:hover { border-color: var(--green-dim); color: var(--bright); }
.editing__note { color: var(--green); font-size: 13px; margin-top: 20px; letter-spacing: 0.02em; text-shadow: 0 0 10px var(--green-glow); }

/* ── consistency (matches the other borderless sections) ────── */
.consistency__copy { max-width: 800px; margin-bottom: 22px; }
.consistency__strip { font-size: 13px; }

/* ── models / providers ─────────────────────────────────────── */
.models__lead { margin-bottom: 0; }
.models__byo { margin-top: 16px; color: var(--text); font-size: 15px; letter-spacing: 0.01em; }
.models__byo .accent { color: var(--green); text-shadow: 0 0 10px var(--green-glow); }

/* ── scripting (vincent make) ───────────────────────────────── */
.scripting__lead { margin-bottom: 20px; }
.scripting__lead .accent { color: var(--green); }
.make-block { background: #000; border: 1px solid var(--border-hi); padding: 20px 22px; font-size: 13px; line-height: 1.95; color: var(--text); white-space: pre; overflow-x: auto; }
.make-block .make-arg { color: var(--green-dim); }

/* ── footer ─────────────────────────────────────────────────── */
.footer {
  margin-top: 72px; padding-top: 24px; border-top: 1px dashed var(--border);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  color: var(--text); font-size: 11px; letter-spacing: 0.15em;
}
.footer a { color: var(--text); transition: color 0.15s; }
.footer a:hover { color: var(--green); }

/* ── responsive ─────────────────────────────────────────────── */
@media (max-width: 760px) {
  .content { padding: 40px 20px 48px; }
  .diptych { grid-template-columns: 1fr; }
  .demo-terminal__body { grid-template-columns: 1fr; }
  .demo-terminal__preview { border-left: none; border-top: 1px solid var(--border); }
  .chip-grid { grid-template-columns: 1fr 1fr; }
  .body-text { font-size: 16px; }
  .mode-panel { padding: 22px 18px; }
  .mode-panel__flow { display: none; } /* on mobile the promise line carries the mode; the ASCII flow would just scroll */
  /* CRT calmer on mobile — easier to read on a small screen */
  .crt-overlay::before { opacity: 0.5; }
  .crt-overlay::after  { display: none; }
}
@media (max-width: 540px) {
  .status-bar__right { display: none; } /* drop the tagline on narrow screens — keep the brand */
  /* the install command is nowrap + long — shrink it so the box never overflows the viewport */
  .cta-install { font-size: 12px; padding: 12px 14px; }
  .cta-install .dollar { margin-right: 8px; }
  .cta-install .copy-icon { margin-left: 10px; }
  /* narrow video tile: the bottom-left filename + bottom-right format label collide — drop the format */
  .video-tile__format { display: none; }
  /* keep the demo title bar on one line (path truncates instead of wrapping under the status) */
  .demo-terminal__header { gap: 12px; }
  .demo-terminal__header span:first-child { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
  .demo-terminal__header span:last-child { flex-shrink: 0; }
}
@media (max-width: 420px) {
  .chip-grid { grid-template-columns: 1fr; }
  .footer { flex-direction: column; gap: 6px; }
}

/* ── reduced motion (required) — kill flicker/sweep/blink ───── */
@media (prefers-reduced-motion: reduce) {
  .crt-overlay { animation: none; }
  .crt-overlay::after { display: none; }
  .cursor { animation: none; }
  .storyboard-tile, .video-tile { transition: none; }
}