/*
 * control.actana.ai — the whole stylesheet.
 *
 * Tokens are copied from packages/panel/src/styles.css so the page the
 * screenshots sit on looks like the product in them. Copied, not imported:
 * that one is an app stylesheet, and this folder must never grow a dependency
 * on the workspace build (docs/landing-page.md §4).
 *
 * Dark is designed first and lives in :root; light is the override. Our
 * audience lives in terminals, and every screenshot here was shot dark-first.
 */

/* ---------------------------------------------------------------- fonts -- */

/*
 * JetBrains Mono, self-hosted — the product's own UI font, so the page wears
 * the product's face rather than a web-safe stand-in. Two static weights is
 * the whole family we need. OFL-1.1, see fonts/OFL.txt.
 */
@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/JetBrainsMono-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/JetBrainsMono-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* --------------------------------------------------------------- tokens -- */

:root {
  color-scheme: dark;

  --bg: #0e1722;
  --surface-card: #122231;
  --surface-raised: #16293a;
  --border: #1c3346;
  --border-strong: #244157;

  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;

  --brand-accent: #29a9e0;
  --brand-accent-hover: #1786c2;
  --accent-wash: rgb(41 169 224 / 14%);

  /* The chip the harness marks are drawn on — see docs/assets/README.md. */
  --harness-chip: #151b26;
  --harness-chip-border: #24354a;
  --harness-planned-ink: #7d8899;

  /* Qcentic's served identity, untouched: their ink on their own black. */
  --qcentic-bg: #0d0d0d;
  --qcentic-border: #2a2a2a;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 1px 2px rgb(0 0 0 / 30%);
  --shadow-hero: 0 24px 64px rgb(0 0 0 / 45%);
  --measure: 68ch;
}

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;

    --bg: #f3f4f6;
    --surface-card: #ffffff;
    --surface-raised: #f9fafb;
    --border: #e5e7eb;
    --border-strong: #c7e6f6;

    --text-primary: #111827;
    --text-secondary: #374151;
    --text-muted: #6b7280;

    --accent-wash: rgb(41 169 224 / 10%);

    --shadow-card: 0 1px 2px rgb(17 24 39 / 6%);
    --shadow-hero: 0 24px 64px rgb(17 24 39 / 14%);
  }
}

/* ---------------------------------------------------------------- reset -- */

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

html {
  scroll-behavior: smooth;
  /* The sticky nav must not sit on top of an anchored heading. */
  scroll-padding-top: 5.5rem;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-secondary);
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas,
    monospace;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
svg {
  max-width: 100%;
}

a {
  color: var(--brand-accent);
  text-decoration-color: rgb(41 169 224 / 40%);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--brand-accent-hover);
  text-decoration-color: currentcolor;
}

:focus-visible {
  outline: 2px solid var(--brand-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--brand-accent);
  color: #f1f9fe;
}

h1,
h2,
h3 {
  color: var(--text-primary);
  line-height: 1.15;
  /* Mono at display sizes needs the tracking pulled in or it reads as a ransom
     note. */
  letter-spacing: -0.03em;
  margin: 0;
}

/* -------------------------------------------------------------- scaffold -- */

.wrap {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: clamp(56px, 9vw, 104px) 0;
  border-top: 1px solid var(--border);
}

.section-head {
  margin-bottom: clamp(28px, 4vw, 44px);
}

.section-head h2 {
  font-size: clamp(1.4rem, 3.4vw, 2rem);
}

.section-head p {
  margin: 12px 0 0;
  max-width: var(--measure);
  color: var(--text-muted);
}

.eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand-accent);
  margin: 0 0 10px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--surface-card);
  color: var(--text-primary);
  padding: 12px 18px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  z-index: 100;
}

.skip-link:focus {
  left: 12px;
  top: 12px;
}

/* ------------------------------------------------------------------ nav -- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

.nav-logo img {
  height: 26px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
}

.nav-links a:hover {
  color: var(--text-primary);
  background: var(--accent-wash);
}

.nav-links .nav-cta {
  border: 1px solid var(--border-strong);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.nav-links .nav-cta svg {
  width: 15px;
  height: 15px;
  fill: currentcolor;
}

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

.hero {
  padding-top: clamp(48px, 8vw, 88px);
  padding-bottom: clamp(40px, 6vw, 64px);
  border-top: 0;
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.9rem, 6.2vw, 3.35rem);
  font-weight: 700;
}

/* The third clause is the one people remember; let the accent carry it. */
.hero h1 .lede-accent {
  color: var(--brand-accent);
}

.hero-sub {
  margin: 20px auto 0;
  max-width: var(--measure);
  font-size: clamp(0.95rem, 2.1vw, 1.075rem);
  color: var(--text-muted);
}

.hero-sub strong {
  color: var(--text-secondary);
  font-weight: 700;
}

.hero-shot {
  margin: clamp(36px, 6vw, 60px) auto 0;
  max-width: 900px;
}

.hero-shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hero);
}

figure {
  margin: 0;
}

figcaption {
  margin-top: 14px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
}

/* ---------------------------------------------------------------- tabs --- */

.install {
  margin: clamp(28px, 4.5vw, 40px) auto 0;
  max-width: 760px;
  text-align: left;
}

.tablist {
  display: flex;
  gap: 6px;
  margin-bottom: -1px;
  position: relative;
  z-index: 1;
}

.tab {
  appearance: none;
  font: inherit;
  font-size: 0.8125rem;
  cursor: pointer;
  padding: 9px 16px;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid transparent;
  border-bottom: 0;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.tab:hover {
  color: var(--text-primary);
}

.tab[aria-selected="true"] {
  color: var(--text-primary);
  background: var(--surface-card);
  border-color: var(--border);
  /* Sit the selected tab on top of the panel's top border. */
  box-shadow: 0 1px 0 0 var(--surface-card);
}

.panel[hidden] {
  display: none;
}

.codeblock {
  position: relative;
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: 0 var(--radius) var(--radius) var(--radius);
  box-shadow: var(--shadow-card);
}

.codeblock pre {
  margin: 0;
  padding: 18px 60px 18px 20px;
  overflow-x: auto;
  font-size: 0.8125rem;
  line-height: 1.9;
  color: var(--text-primary);
  -moz-tab-size: 2;
  tab-size: 2;
}

.codeblock code {
  font: inherit;
}

.codeblock .cmt {
  color: var(--text-muted);
}

.copy {
  position: absolute;
  top: 10px;
  right: 10px;
  appearance: none;
  font: inherit;
  font-size: 0.6875rem;
  cursor: pointer;
  padding: 6px 10px;
  color: var(--text-muted);
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: color 0.12s, border-color 0.12s;
}

.copy:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.copy[data-copied="true"] {
  color: var(--brand-accent);
  border-color: var(--brand-accent);
}

.install-note {
  margin: 14px 2px 0;
  font-size: 0.75rem;
  line-height: 1.7;
  color: var(--text-muted);
}

.install-note b {
  color: var(--text-secondary);
}

/* --------------------------------------------------------- harness row --- */

.harnesses {
  padding: clamp(40px, 6vw, 64px) 0;
}

.harness-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0;
}

/*
 * Lockups, not bare icons: the mark plus its name, so the row reads without
 * hovering. The chip surface is the same #151b26 the marks are already drawn
 * on (docs/assets/README.md), so the mark's own chip dissolves into this one
 * instead of stacking a second rounded rectangle inside the first.
 */
.harness {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px 7px 7px;
  background: var(--harness-chip);
  border: 1px solid var(--harness-chip-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: #e5e7eb;
  font-size: 0.8125rem;
  white-space: nowrap;
}

a.harness:hover {
  color: #ffffff;
  border-color: var(--brand-accent);
}

.harness img {
  width: 34px;
  height: 34px;
  display: block;
}

/* Planned: the dashed chip is the mark's own, and the label goes muted with
   it. Same grammar as the README banner — solid is shipped, dashed is next. */
.harness.planned {
  color: var(--harness-planned-ink);
  background: color-mix(in srgb, var(--harness-chip) 55%, transparent);
  border-style: dashed;
  border-color: #3f4b5c;
}

.harness-caption {
  margin: 22px auto 0;
  max-width: var(--measure);
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.harness-caption b {
  color: var(--text-secondary);
}

/* ------------------------------------------------------------- features -- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.feature {
  padding: 24px;
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.feature h3 {
  font-size: 1rem;
  margin-bottom: 10px;
}

.feature p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.feature p + p {
  margin-top: 10px;
}

.shot {
  margin-top: clamp(28px, 4vw, 40px);
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

/* ------------------------------------------------------------- diagram --- */

.diagram {
  margin: 0 auto;
  max-width: 780px;
}

.diagram img {
  display: block;
  width: 100%;
  height: auto;
}

.diagram-note {
  margin: clamp(24px, 4vw, 36px) auto 0;
  max-width: var(--measure);
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ------------------------------------------------------------------ faq -- */

/*
 * <details> rather than a JS accordion: it opens without script, it is
 * findable by the browser's own in-page search, and it costs nothing.
 */
.faq {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.faq details + details {
  border-top: 1px solid var(--border);
}

.faq summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 22px;
  cursor: pointer;
  list-style: none;
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.5;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary:hover {
  background: var(--accent-wash);
}

/* Our own marker, so it rotates rather than swapping glyph. */
.faq summary::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 8px;
  border-right: 1.5px solid var(--brand-accent);
  border-bottom: 1.5px solid var(--brand-accent);
  transform: rotate(-45deg);
  transition: transform 0.15s ease;
}

.faq details[open] > summary::before {
  transform: rotate(45deg);
}

.faq-body {
  padding: 0 22px 20px 41px;
}

.faq-body p {
  margin: 0;
  max-width: var(--measure);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.faq-body p + p {
  margin-top: 12px;
}

.faq-body b {
  color: var(--text-secondary);
  font-weight: 700;
}

@media (max-width: 640px) {
  .faq summary {
    padding: 16px;
    font-size: 0.875rem;
  }

  .faq-body {
    padding: 0 16px 18px 35px;
  }
}

/* -------------------------------------------------------------- closing -- */

.closing {
  text-align: center;
}

.closing .install {
  text-align: left;
}

.doclinks {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 10px;
  margin: clamp(28px, 4vw, 36px) 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.8125rem;
}

.doclinks a {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-card);
  text-decoration: none;
}

.doclinks a:hover {
  border-color: var(--brand-accent);
}

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

.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0 96px;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.footer-links a {
  text-decoration: none;
}

.footer p {
  margin: 0 0 6px;
  max-width: var(--measure);
}

/* -------------------------------------------------------- qcentic badge -- */

/*
 * Qcentic's identity is deliberately monochrome, so the badge is a dark chip
 * in both themes rather than something tinted into Actana's blue. The chip
 * colour is the black baked into the lockup's own artboard, so the SVG's edge
 * is invisible and the padding reads as part of the mark.
 */
.qcentic {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px 6px 12px;
  background: var(--qcentic-bg);
  border: 1px solid var(--qcentic-border);
  border-radius: 2px;
  text-decoration: none;
  color: #8a8a8a;
  font-size: 0.625rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 0 4px 16px rgb(0 0 0 / 28%);
}

.qcentic:hover {
  color: #f5f5f5;
  border-color: #3d3d3d;
}

.qcentic img {
  height: 30px;
  width: auto;
  display: block;
}

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

@media (max-width: 640px) {
  .nav-links a {
    padding: 8px 9px;
    font-size: 0.8125rem;
  }

  .nav-links .nav-label {
    display: none;
  }

  .codeblock pre {
    padding: 16px 16px 44px;
    font-size: 0.75rem;
  }

  .copy {
    top: auto;
    bottom: 10px;
    right: 10px;
  }

  .qcentic {
    right: 10px;
    bottom: 10px;
    padding: 5px 8px 5px 10px;
  }

  .qcentic img {
    height: 24px;
  }

  .qcentic .qcentic-label {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}