/* AVICA demo site — dark theme only: black surfaces, white text, red accent.
   Kept deliberately to two colors (red + grayscale) for readability. */

:root {
  --bg: #08090a;
  --surface: #121315;
  --surface-2: #1a1c1e;
  --border: #2a2c2f;
  --border-strong: #3e4145;
  --text: #f4f5f6;
  --text-dim: #b7bcc1;
  --text-faint: #82888e;
  --accent: #ff4d4f;
  --accent-line: #ff6b6d;
  --accent-soft: #2c1213;
  --accent-strong: #ffffff;

  /* Console surfaces — always darkest, regardless of surrounding sections. */
  --console: #050607;
  --console-2: #0c0e0f;
  --console-border: #26292c;
  --console-text: #f1f2f3;
  --console-dim: #8b9096;

  --radius: 8px;
  --maxw: 68rem;
  --maxw-wide: 108rem;

  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { color-scheme: dark; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--accent-line);
  outline-offset: 2px;
  border-radius: 3px;
}

.wrap {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 1.75rem;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0;
}

/* Compact / Full view toggle — hides supplementary prose by default. */

.detail { display: none; }
html[data-view="full"] .detail { display: block; }

.view-toggle {
  display: inline-flex;
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  padding: 2px;
  gap: 2px;
  flex-shrink: 0;
}

.view-toggle__btn {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
  background: transparent;
  border: 0;
  border-radius: 100px;
  padding: 0.32rem 0.85rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.view-toggle__btn:hover { color: var(--text); }

.view-toggle__btn[aria-pressed="true"] {
  background: var(--accent);
  color: #1a0000;
  font-weight: 600;
}

/* ---------- masthead ---------- */

.masthead {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.masthead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 0.9rem;
  max-width: var(--maxw-wide);
  margin-inline: auto;
  padding-inline: 1.75rem;
  flex-wrap: wrap;
}

.wordmark {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.wordmark b {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
}

.wordmark span {
  font-size: 0.78rem;
  color: var(--text-faint);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.masthead__group {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  flex-wrap: wrap;
}

.masthead__links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.92rem;
}

.masthead__links a {
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color 0.15s, border-color 0.15s;
}

.masthead__links a:hover {
  color: var(--text);
  border-bottom-color: var(--accent-line);
}

/* ---------- hero ---------- */

.hero { padding-block: 3.5rem 2.5rem; }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: 100px;
  padding: 0.25rem 0.8rem;
  margin-bottom: 1.5rem;
  text-decoration: none;
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  line-height: 1.03;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin: 0 0 1rem;
  text-wrap: balance;
  max-width: 20ch;
  color: var(--text);
}

.hero h1 em {
  font-style: normal;
  color: var(--text-dim);
  font-weight: 400;
  letter-spacing: -0.02em;
}

.hero__lede {
  font-size: 1.22rem;
  line-height: 1.6;
  color: var(--text-dim);
  max-width: 60ch;
  margin: 0 0 1.75rem;
}

.hero__lede strong {
  color: var(--text);
  font-weight: 600;
}

/* ---------- banner ---------- */

.banner {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  max-width: 46rem;
  margin: 0 0 2rem;
  padding: 1.1rem 1.4rem;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
}

.banner__icon {
  font-size: 1.4rem;
  line-height: 1;
  flex-shrink: 0;
}

.banner__text {
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.5;
  color: var(--text);
  font-weight: 500;
}

.banner__text strong {
  color: var(--accent-line);
  font-weight: 700;
}

/* ---------- install / command block ---------- */

.install {
  background: var(--console);
  border: 1px solid var(--console-border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 46rem;
}

.install__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0.7rem 0.55rem 0.95rem;
  border-bottom: 1px solid var(--console-border);
  background: var(--console-2);
}

.install__bar span {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--console-dim);
}

.install pre {
  margin: 0;
  padding: 1.05rem 1.1rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--console-text);
}

.install .p { color: var(--accent); user-select: none; }

.install__fallback {
  margin: 0;
  padding: 0.55rem 1rem 0.8rem;
  font-size: 0.8rem;
  color: var(--console-dim);
  border-top: 1px solid var(--console-border);
}

.install__fallback code {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: #c2ccd3;
  word-break: break-all;
}

.copy {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--console-dim);
  background: transparent;
  border: 1px solid var(--console-border);
  border-radius: 4px;
  padding: 0.3rem 0.65rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.copy:hover { color: var(--console-text); border-color: #4a4f54; }
.copy[data-done="1"] { color: var(--accent-line); border-color: var(--accent-line); }

/* ---------- quickstart steps ---------- */

.quickstart { padding-block: 1.5rem 3rem; }

.quickstart__head { margin-bottom: 1.6rem; }

.quickstart__head h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0.4rem 0 0;
  color: var(--text);
}

.quickstart__head h2 em {
  font-style: normal;
  color: var(--text-dim);
  font-weight: 400;
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.step__title {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.5rem;
}

.step__n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--accent);
  color: #1a0000;
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}

.step__hint {
  margin: -0.15rem 0 0.65rem;
  font-size: 0.92rem;
  color: var(--text-faint);
}

/* ---------- pipeline chain ---------- */

.chain { padding-block: 1rem 0; }

.chain__head {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.chain__head p { margin: 0; font-size: 0.95rem; color: var(--text-dim); }

.chain__steps {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.05rem;
}

.chain__steps code {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--text-dim);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.22rem 0.46rem;
  white-space: nowrap;
}

.chain__steps code:last-of-type {
  color: var(--accent-line);
  border-color: var(--accent-line);
  background: var(--accent-soft);
}

.chain__steps i {
  font-style: normal;
  color: var(--text-faint);
  padding-inline: 0.2rem;
  font-size: 0.72rem;
}

/* ---------- console section ---------- */

.console {
  border-block: 1px solid var(--border);
  background: var(--surface);
  padding-block: 2.5rem 3rem;
}

.console__inner {
  max-width: var(--maxw-wide);
  margin-inline: auto;
  padding-inline: 1.75rem;
  display: grid;
  grid-template-columns: 17rem minmax(0, 1fr);
  gap: 2.25rem;
  align-items: start;
}

/* rail */

.rail__title {
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 0.2rem;
}

.rail__sub {
  font-size: 0.88rem;
  color: var(--text-dim);
  margin: 0 0 1.5rem;
}

.rail__group + .rail__group { margin-top: 1.6rem; }

.rail__glabel {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.15rem;
}

.rail__gnote {
  font-size: 0.8rem;
  color: var(--text-faint);
  margin: 0 0 0.6rem;
  line-height: 1.45;
}

.rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.demo {
  width: 100%;
  display: grid;
  grid-template-columns: 1.7rem minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0.55rem;
  text-align: left;
  font: inherit;
  color: var(--text-dim);
  background: transparent;
  border: 0;
  border-left: 2px solid transparent;
  border-radius: 0 4px 4px 0;
  padding: 0.55rem 0.6rem 0.55rem 0.65rem;
  cursor: pointer;
  transition: background 0.13s, color 0.13s, border-color 0.13s;
}

.demo:hover { background: var(--surface-2); color: var(--text); }

.demo__n {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--text-faint);
}

.demo__t {
  font-size: 0.96rem;
  line-height: 1.35;
  font-weight: 500;
}

.demo__d {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}

.demo[aria-current="true"] {
  background: var(--surface-2);
  border-left-color: var(--accent);
  color: var(--text);
}

.demo[aria-current="true"] .demo__n,
.demo[aria-current="true"] .demo__d { color: var(--accent-line); }

/* stage */

.stage { min-width: 0; }

.stage__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.9rem;
}

.stage__title {
  font-size: 1.65rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 0.35rem;
  text-wrap: balance;
}

.stage__blurb {
  margin: 0;
  color: var(--text-dim);
  font-size: 1.02rem;
  max-width: 62ch;
}

.chips { display: flex; gap: 0.4rem; flex-shrink: 0; }

.chip {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  border-radius: 100px;
  padding: 0.22rem 0.65rem;
  border: 1px solid var(--border-strong);
  color: var(--text-faint);
  white-space: nowrap;
}

.chip--data {
  color: var(--accent-line);
  border-color: var(--accent-line);
  background: var(--accent-soft);
}

/* player bezel */

.bezel {
  background: var(--console);
  border: 1px solid var(--console-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.bezel__bar {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--console-border);
  background: var(--console-2);
}

.dots { display: flex; gap: 0.34rem; }

.dots i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #33383d;
  display: block;
}

.bezel__name {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--console-dim);
  letter-spacing: 0.05em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bezel__runtime {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--console-dim);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.bezel__runtime b { color: #c2ccd3; font-weight: 500; }

#player { min-height: 18rem; }
#player .ap-player { border-radius: 0; }

/* command strip under player */

.cmd {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.85rem;
  padding: 0.65rem 0.7rem 0.65rem 0.95rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.cmd code {
  font-family: var(--mono);
  font-size: 0.88rem;
  color: var(--text);
  white-space: pre;
  overflow-x: auto;
  flex: 1;
  min-width: 0;
  line-height: 1.7;
}

.cmd .copy {
  color: var(--text-faint);
  border-color: var(--border-strong);
  flex-shrink: 0;
}

.cmd .copy:hover { color: var(--text); border-color: var(--text-faint); }
.cmd .copy[data-done="1"] { color: var(--accent-line); border-color: var(--accent-line); }

.stage__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.7rem;
  font-size: 0.84rem;
  color: var(--text-faint);
}

.stage__foot a { color: var(--text-dim); }

.nav { display: flex; gap: 0.4rem; }

.nav button {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  padding: 0.26rem 0.65rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.nav button:hover:not(:disabled) { color: var(--text); border-color: var(--text-faint); }
.nav button:disabled { opacity: 0.4; cursor: default; }

/* ---------- requirements ---------- */

.reqs { padding-block: 3.25rem; }

.reqs h2 {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0.35rem 0 1.5rem;
}

.reqs__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.75rem 2.5rem;
}

.reqs__lede {
  margin: 2.25rem 0 0.85rem;
  font-size: 0.96rem;
  color: var(--text-dim);
  max-width: 60ch;
}

.install--data { max-width: 52rem; }

.req dt {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.req dd {
  margin: 0;
  font-size: 0.96rem;
  color: var(--text-dim);
  line-height: 1.6;
}

.req dd code {
  font-family: var(--mono);
  font-size: 0.86em;
  color: var(--text);
}

/* ---------- footer ---------- */

.foot {
  border-top: 1px solid var(--border);
  padding-block: 2.25rem 3rem;
  font-size: 0.88rem;
  color: var(--text-faint);
}

.foot__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  margin-bottom: 1.4rem;
}

.foot__links a {
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 1px;
}

.foot__links a:hover { color: var(--text); border-bottom-color: var(--accent-line); }

.foot p { margin: 0 0 0.6rem; max-width: 74ch; line-height: 1.65; }

/* ---------- responsive ---------- */

@media (max-width: 1080px) {
  .console__inner { grid-template-columns: minmax(0, 1fr); gap: 1.75rem; }
  .rail__list { gap: 0; }
}

@media (max-width: 620px) {
  .wrap, .console__inner, .masthead__inner { padding-inline: 1.15rem; }
  .hero { padding-block: 2.5rem 1.75rem; }
  .masthead__links { gap: 1rem; font-size: 0.85rem; }
  .banner { flex-direction: column; align-items: flex-start; }
  .stage__head { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .cmd { flex-direction: column; align-items: stretch; gap: 0.6rem; }
  .cmd .copy { align-self: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}