/* =============================================================
   MVPsonic - Tech-noir / brutalist-modern
   Hand-tuned. No frameworks. No indigo. No violet. No gradients-on-white.
   ============================================================= */

/* ---- Theme tokens ----------------------------------------- */
:root[data-theme="dark"] {
  --bg:           #0d0d0e;
  --bg-elev:      #141416;
  --bg-card:      #17181a;
  --bg-inset:     #0a0a0b;
  --ink:          #ece9e1;
  --ink-dim:      #b8b5ad;     /* bumped from #a6a39b for WCAG AA */
  --ink-mute:     #908d85;     /* bumped from #6b6862 - old failed contrast */
  --line:         #26262a;
  --line-strong:  #36363c;

  --amber:        #e8a838;     /* primary accent - gold/amber */
  --amber-soft:   #f4c97a;
  --amber-ink:    #1a1306;     /* text on amber */
  --teal:         #6fb0a8;     /* bumped from #4a8b85 - old failed contrast */
  --teal-soft:    #8fc8c0;
  --rust:         #d2664a;     /* bumped from #b8533a */

  --grid-line:    rgba(255,255,255,0.025);
  --grain-opacity: 0.04;

  --shadow-1:     0 1px 0 rgba(0,0,0,0.4), 0 0 0 1px var(--line);
  --shadow-2:     0 12px 32px -8px rgba(0,0,0,0.6), 0 0 0 1px var(--line);
  --shadow-pop:   6px 6px 0 0 var(--ink);  /* brutalist drop */
}

:root[data-theme="light"] {
  --bg:           #f5f1e8;     /* warm bone */
  --bg-elev:      #fbf8f1;
  --bg-card:      #ffffff;
  --bg-inset:     #ece7d8;
  --ink:          #18181b;
  --ink-dim:      #3d3b36;     /* darkened from #4f4d47 for WCAG AA */
  --ink-mute:     #5e5b53;     /* darkened from #807d75 - old failed contrast */
  --line:         #d9d3c4;
  --line-strong:  #b8b1a0;

  --amber:        #b87a14;
  --amber-soft:   #d99a3a;
  --amber-ink:    #fff8e8;
  --teal:         #2f6b66;
  --teal-soft:    #4a8b85;
  --rust:         #9a3e22;

  --grid-line:    rgba(0,0,0,0.035);
  --grain-opacity: 0.03;

  --shadow-1:     0 1px 0 rgba(0,0,0,0.04), 0 0 0 1px var(--line);
  --shadow-2:     0 12px 28px -10px rgba(0,0,0,0.18), 0 0 0 1px var(--line);
  --shadow-pop:   6px 6px 0 0 var(--ink);
}

/* ---- Reset + base --------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Newsreader', Georgia, 'Times New Roman', serif;
  font-size: 17px;
  line-height: 1.55;
  font-feature-settings: "ss01", "ss02";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Subtle grid overlay - tech-noir atmosphere */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  z-index: 0;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 85%);
}
/* Film grain */
body::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
body > * { position: relative; z-index: 2; }

::selection { background: var(--amber); color: var(--amber-ink); }

a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Skip link */
.skip {
  position: absolute; top: -100px; left: 12px;
  background: var(--ink); color: var(--bg);
  padding: 10px 14px; font-family: 'JetBrains Mono', monospace;
  font-size: 13px; font-weight: 600;
  z-index: 100;
}
.skip:focus { top: 12px; }

/* ---- Typography ----------------------------------------- */
h1, h2, h3, h4 {
  font-family: 'Instrument Serif', 'Newsreader', Georgia, serif;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.02;
  color: var(--ink);
  margin: 0 0 0.5em;
}
h1 { font-size: clamp(3rem, 7vw, 6.5rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.5rem); }
h3 { font-size: clamp(1.4rem, 2.5vw, 2rem); }
h4 { font-size: 1.05rem; font-family: 'JetBrains Mono', monospace; font-weight: 700; letter-spacing: 0.02em; text-transform: uppercase; }

p { margin: 0 0 1em; }
.lead { font-size: 1.25rem; color: var(--ink-dim); line-height: 1.5; max-width: 56ch; }

.mono { font-family: 'JetBrains Mono', monospace; font-feature-settings: "calt", "zero"; }
.italic-display { font-family: 'Instrument Serif', serif; font-style: italic; }

/* ---- Layout primitives ---------------------------------- */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 28px;
}
@media (max-width: 640px) { .container { padding: 0 20px; } }

.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-weight: 600;
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before {
  content: ""; width: 24px; height: 1px; background: var(--ink-mute);
}

/* ---- Navigation ----------------------------------------- */
.nav {
  position: sticky; top: 0;
  z-index: 50;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 28px;
  display: flex; align-items: center; gap: 24px;
}
@media (max-width: 640px) { .nav__inner { padding: 12px 20px; gap: 12px; } }

.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand__mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px;
  background: transparent;
  border: 0;
  flex-shrink: 0;
}
/* Smaller in the footer - secondary placement. */
.footer .brand__mark { width: 36px; height: 36px; }

.brand__mark img,
.brand__mark svg {
  display: block;
  width: 100%; height: 100%;
  object-fit: contain;
}
/* The logo already contains the wordmark "MVPsonic", so the text label
   next to it would just repeat. Hide it. */
.brand__name { display: none; }
.brand__tag {
  font-size: 11px; color: var(--ink-mute);
  border-left: 1px solid var(--line-strong);
  padding-left: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
}
@media (max-width: 540px) { .brand__tag { display: none; } }

.nav__links {
  display: flex; align-items: center; gap: 4px;
  margin-left: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 500;
}
.nav__links a {
  padding: 8px 14px;
  color: var(--ink-dim);
  border-radius: 2px;
  transition: color 120ms ease;
}
.nav__links a:hover { color: var(--ink); }
.nav__links a.is-active { color: var(--amber); }
.nav__contact { border-left: 1px solid var(--line); margin-left: 6px; padding-left: 18px !important; }

@media (max-width: 820px) {
  .nav__links { display: none; }
  .nav__cta   { display: none; }              /* "Try Lyra" lives in mobile drawer */
  .nav__burger { display: inline-flex !important; }
}

.nav__actions { display: flex; align-items: center; gap: 10px; }
@media (max-width: 820px) {
  .nav__actions { margin-left: auto; }       /* fill the void left by hidden links */
}

/* ---- Theme toggle --------------------------------------- */
.theme-toggle {
  width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  cursor: pointer;
  transition: background 140ms ease, color 140ms ease, border-color 140ms ease;
}
.theme-toggle:hover { background: var(--bg-elev); border-color: var(--ink); }
.theme-toggle__icon { display: none; }
:root[data-theme="dark"]  .theme-toggle__icon--sun  { display: block; }
:root[data-theme="light"] .theme-toggle__icon--moon { display: block; }

/* ---- Buttons -------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: transform 80ms ease, box-shadow 80ms ease, background 120ms ease, color 120ms ease;
  text-transform: uppercase;
  white-space: nowrap;
}
.btn:hover { background: var(--ink); color: var(--bg); }
.btn--sm  { padding: 9px 14px; font-size: 12px; }
.btn--lg  { padding: 16px 26px; font-size: 14px; }

.btn--primary {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--amber-ink);
}
.btn--primary:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}
.btn--pop {
  box-shadow: var(--shadow-pop);
}
.btn--pop:hover {
  transform: translate(2px, 2px);
  box-shadow: 4px 4px 0 0 var(--ink);
}
.btn--ghost { border-color: var(--line-strong); color: var(--ink-dim); }
.btn--ghost:hover { border-color: var(--ink); background: transparent; color: var(--ink); }

/* ---- Hero ----------------------------------------------- */
.hero {
  padding: 96px 0 64px;
  position: relative;
}

/* One-column centered hero variant. No terminal mockup, no status sticker.
   Used by the homepage so the page leads with the value prop itself. */
.hero--centered .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 880px;
  padding-top: 24px;
  padding-bottom: 24px;
}
.hero--centered .hero__title { text-wrap: balance; }
.hero--centered .hero__lead {
  margin-top: 28px;
  max-width: 56ch;
}
.hero--centered .hero__cta { justify-content: center; margin-top: 36px; }
@media (max-width: 640px) { .hero { padding: 56px 0 40px; } }

.hero__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 64px;
  align-items: end;
}
@media (max-width: 920px) {
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
}

.hero__title {
  font-size: clamp(3.2rem, 8.5vw, 7.5rem);
  letter-spacing: -0.035em;
  line-height: 0.95;
}
.hero__title em {
  font-style: italic;
  color: var(--amber);
  font-family: 'Instrument Serif', serif;
}
.hero__title .slash {
  display: inline-block;
  color: var(--teal);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 400;
  transform: translateY(-0.15em);
  font-size: 0.6em;
  padding: 0 0.1em;
}

.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }

.hero__sticker {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 28px;
}
.hero__sticker .blink {
  width: 8px; height: 8px; background: var(--amber);
  display: inline-block;
  animation: blink 1.4s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0.2; } }

/* Hero visual - terminal-card */
.hero__visual {
  position: relative;
}
.term {
  background: var(--bg-elev);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-pop);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  position: relative;
  transform: rotate(-0.6deg);
}
.term__bar {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-inset);
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.term__dot { width: 10px; height: 10px; border-radius: 50%; background: var(--rust); }
.term__dot--y { background: var(--amber); }
.term__dot--g { background: var(--teal); }
.term__bar-title { margin-left: auto; }
/* min-height reserves space so the LCP element doesn't shift when the
   JetBrains Mono webfont swaps in (was the only CLS contributor). */
.term__body { padding: 18px 18px 20px; line-height: 1.65; color: var(--ink-dim); min-height: 200px; }
.term__body .u { color: var(--teal-soft); }
.term__body .s { color: var(--amber); }
.term__body .c { color: var(--ink-mute); }
.term__cursor {
  display: inline-block;
  width: 8px; height: 1.05em;
  background: var(--amber); vertical-align: -2px;
  animation: blink 1s steps(2) infinite;
}

/* ---- Sections ------------------------------------------- */
.section {
  padding: 96px 0;
  border-top: 1px solid var(--line);
  position: relative;
}
@media (max-width: 640px) { .section { padding: 56px 0; } }

.section__head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
  margin-bottom: 56px;
  align-items: end;
}
@media (max-width: 820px) {
  .section__head { grid-template-columns: 1fr; gap: 20px; margin-bottom: 40px; }
}

.section__title { font-size: clamp(2rem, 4.5vw, 3.4rem); letter-spacing: -0.025em; }
.section__sub { color: var(--ink-dim); font-size: 1.15rem; max-width: 56ch; }

/* ---- Feature grid (asymmetric) -------------------------- */
.features {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  border: 1px solid var(--line);
}

/* ---- Capability grid (model claims, brutalist 3x2 grid) ---- */
.caps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.cap {
  padding: 32px 28px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  background: var(--bg-elev);
  transition: background 140ms ease;
}
.cap:hover { background: var(--bg-card); }
.cap__title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0 0 12px;
}
.cap__body {
  font-size: 0.95rem;
  color: var(--ink-dim);
  margin: 0;
  line-height: 1.55;
}
@media (max-width: 900px) { .caps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .caps { grid-template-columns: 1fr; } }
.feature {
  padding: 36px 32px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-elev);
  position: relative;
  transition: background 200ms ease;
}
.feature:hover { background: var(--bg-card); }
.feature--wide { grid-column: span 4; }
.feature--med  { grid-column: span 3; }
.feature--sm   { grid-column: span 2; }
@media (max-width: 920px) {
  .features { grid-template-columns: 1fr 1fr; }
  .feature--wide, .feature--med, .feature--sm { grid-column: span 1; }
  .feature--wide { grid-column: span 2; }
}
@media (max-width: 540px) {
  .features { grid-template-columns: 1fr; }
  .feature--wide { grid-column: span 1; }
}

.feature__num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--amber);
  letter-spacing: 0.12em;
  margin-bottom: 18px;
  display: block;
}
.feature__title {
  font-size: 1.5rem;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.feature__body { color: var(--ink-dim); font-size: 1rem; line-height: 1.6; margin: 0; }
.feature__icon { color: var(--teal); margin-bottom: 16px; display: block; }

/* ---- Comparison strip ----------------------------------- */
.compare {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0;
  border: 1px solid var(--line);
  margin-top: 8px;
}
.compare__col {
  padding: 28px 24px;
  border-right: 1px solid var(--line);
  background: var(--bg-elev);
}
.compare__col:last-child { border-right: none; }
.compare__col--us { background: var(--bg-card); position: relative; }
.compare__col--us::before {
  content: "OURS"; position: absolute; top: -1px; left: -1px;
  background: var(--amber); color: var(--amber-ink);
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  letter-spacing: 0.12em; padding: 4px 10px; font-weight: 700;
}
.compare__col h3 { color: var(--ink-mute); font-size: 16px; font-weight: 700; margin: 0; }
.compare__col--us h3 { color: var(--amber); }
.compare__list { list-style: none; padding: 0; margin: 18px 0 0; }
.compare__list li {
  padding: 10px 0; border-top: 1px dashed var(--line);
  font-size: 0.95rem; color: var(--ink-dim);
  display: flex; align-items: flex-start; gap: 10px;
}
.compare__list li::before {
  content: "+"; color: var(--teal); font-family: 'JetBrains Mono', monospace;
  font-weight: 700; flex-shrink: 0;
}
.compare__col:not(.compare__col--us) .compare__list li::before { content: "-"; color: var(--ink-mute); }
@media (max-width: 820px) {
  .compare { grid-template-columns: 1fr; }
  .compare__col { border-right: none; border-bottom: 1px solid var(--line); }
}

/* ---- FAQ ------------------------------------------------ */
.faq { border-top: 1px solid var(--line); }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__q {
  padding: 24px 0;
  cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  font-family: 'Instrument Serif', serif;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  list-style: none;
}
.faq__q::-webkit-details-marker { display: none; }
.faq__q::after {
  content: "+"; font-family: 'JetBrains Mono', monospace;
  font-size: 1.5rem; color: var(--amber);
  transition: transform 200ms ease;
}
.faq__item[open] .faq__q::after { content: "×"; transform: rotate(0); }
.faq__a { padding: 0 0 28px; color: var(--ink-dim); max-width: 70ch; }

/* ---- CTA strip ------------------------------------------ */
.cta-strip {
  background: var(--ink);
  color: var(--bg);
  padding: 64px 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.cta-strip h2 { color: var(--bg); }
.cta-strip__inner {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: center;
}
@media (max-width: 820px) { .cta-strip__inner { grid-template-columns: 1fr; } }
.cta-strip .btn { border-color: var(--bg); color: var(--bg); }
.cta-strip .btn--primary { background: var(--amber); border-color: var(--amber); color: var(--amber-ink); }
.cta-strip .btn--primary:hover { background: var(--bg); color: var(--ink); border-color: var(--bg); }

/* ---- Footer --------------------------------------------- */
.footer {
  background: var(--bg-inset);
  border-top: 1px solid var(--line);
  padding: 72px 0 24px;
  margin-top: 0;
}
.footer__inner {
  max-width: 1280px; margin: 0 auto; padding: 0 28px;
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 48px;
}
@media (max-width: 820px) {
  .footer__inner { grid-template-columns: 1fr 1fr; gap: 36px; padding: 0 20px; }
  .footer__col--brand { grid-column: span 2; }
}
@media (max-width: 480px) {
  .footer__inner { grid-template-columns: 1fr; }
  .footer__col--brand { grid-column: span 1; }
}

.footer__brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 800; font-size: 17px;
  margin-bottom: 14px;
}
.footer__pitch { color: var(--ink-dim); font-size: 0.95rem; max-width: 36ch; }
.footer__meta { color: var(--ink-mute); font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.04em; margin-top: 18px; }

.footer__col h3 { color: var(--ink); margin: 0 0 18px; font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.footer__col ul { list-style: none; padding: 0; margin: 0; }
.footer__col li { margin-bottom: 10px; }
.footer__col a {
  color: var(--ink-dim); font-family: 'JetBrains Mono', monospace; font-size: 13px;
  transition: color 120ms ease;
}
.footer__col a:hover { color: var(--amber); }

/* Social icon row in the Contact column. */
.footer__social { margin-top: 8px; }
.footer__social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  border: 1px solid var(--line-strong);
  color: var(--ink-dim);
  transition: color 140ms ease, border-color 140ms ease, background 140ms ease;
}
.footer__social a:hover {
  color: var(--bg);
  background: var(--ink);
  border-color: var(--ink);
}
.footer__social svg { display: block; }

/* =============================================================
   CHAT INTERFACE
   ============================================================= */
.chat-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  /* Use dvh on browsers that support it (handles mobile URL bar). 
     vh fallback for older browsers. */
  min-height: calc(100vh - 65px);
  height: calc(100vh - 65px);
  min-height: calc(100dvh - 65px);
  height: calc(100dvh - 65px);
}
@media (max-width: 820px) {
  .chat-shell { 
    grid-template-columns: 1fr; 
    /* On mobile the topbar is slightly shorter (12px padding vs 14px) */
    min-height: calc(100vh - 60px);
    height: calc(100vh - 60px);
    min-height: calc(100dvh - 60px);
    height: calc(100dvh - 60px);
  }
  .chat-side  { display: none; }
}

.chat-side {
  border-right: 1px solid var(--line);
  background: var(--bg-elev);
  padding: 24px 20px;
  overflow-y: auto;
  display: flex; flex-direction: column; gap: 20px;
}
.chat-side__head {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: flex; align-items: center; gap: 8px;
}
.chat-side__head::before {
  content: ""; width: 24px; height: 1px; background: var(--ink-mute);
}
.chat-side__btn {
  display: flex; align-items: center; gap: 10px;
  width: 100%; padding: 12px 14px;
  background: var(--bg-card);
  border: 1px solid var(--line-strong);
  color: var(--ink);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease;
}
.chat-side__btn:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }

.chat-side__model {
  margin-top: auto;
  padding: 16px;
  background: var(--bg-inset);
  border: 1px solid var(--line);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
}
.chat-side__model strong { color: var(--amber); }
.chat-side__model p { color: var(--ink-mute); font-size: 11px; margin: 6px 0 0; line-height: 1.5; }

.chat-side__suggestions { display: flex; flex-direction: column; gap: 6px; }
.chat-side__sugg {
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  text-align: left;
  cursor: pointer;
  transition: all 120ms ease;
  line-height: 1.4;
}
.chat-side__sugg:hover {
  border-color: var(--amber);
  color: var(--ink);
  background: var(--bg-card);
}

/* Main chat column */
.chat-main {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
}

.chat-thread {
  flex: 1;
  overflow-y: auto;
  padding: 32px 0 24px;
  scroll-behavior: smooth;
}
.chat-thread::-webkit-scrollbar { width: 10px; }
.chat-thread::-webkit-scrollbar-track { background: transparent; }
.chat-thread::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 0; }
.chat-thread::-webkit-scrollbar-thumb:hover { background: var(--ink-mute); }

.chat-empty {
  height: 100%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center;
  padding: 24px;
}
.chat-empty__mark {
  width: 64px; height: 64px;
  background: var(--ink); color: var(--bg);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
  box-shadow: var(--shadow-pop);
}
.chat-empty h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 12px;
}
.chat-empty h2 em { color: var(--amber); font-style: italic; }
.chat-empty p { color: var(--ink-dim); max-width: 44ch; }

.chat-empty__chips {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 8px;
  margin-top: 28px;
  max-width: 640px;
}
.chat-empty__chip {
  padding: 10px 14px;
  border: 1px solid var(--line-strong);
  background: var(--bg-elev);
  color: var(--ink-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  cursor: pointer;
  transition: all 120ms ease;
}
.chat-empty__chip:hover {
  border-color: var(--amber);
  color: var(--ink);
  transform: translate(-1px, -1px);
  box-shadow: 2px 2px 0 var(--amber);
}

/* Messages */
.msg {
  max-width: 820px;
  margin: 0 auto 28px;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 16px;
  animation: msg-in 280ms cubic-bezier(0.2, 0.8, 0.2, 1);
}
@keyframes msg-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.msg__avatar {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700; font-size: 12px;
  border: 1px solid var(--line-strong);
  background: var(--bg-elev);
  color: var(--ink-dim);
  flex-shrink: 0;
}
.msg--user .msg__avatar { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.msg--ai   .msg__avatar { background: var(--amber); color: var(--amber-ink); border-color: var(--amber); }

.msg__body {
  min-width: 0;
}
.msg__role {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 6px;
  display: flex; align-items: center; gap: 10px;
}
.msg__content {
  font-family: 'Newsreader', Georgia, serif;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--ink);
  word-wrap: break-word;
  overflow-wrap: break-word;
}

/* ---- Thinking / chain-of-thought block (Qwen) ---- */
.msg__thinking {
  margin: 4px 0 12px;
  border: 1px dashed var(--line-strong);
  border-radius: 3px;
  background: color-mix(in srgb, var(--bg-elev) 60%, transparent);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--ink-dim);
}
.msg__thinking > summary {
  padding: 8px 12px;
  cursor: pointer;
  list-style: none;
  /* block-level flex so the whole row is the click target, not just the text */
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  user-select: none;
}
.msg__thinking > summary::-webkit-details-marker { display: none; }
.msg__thinking-label { font-weight: 600; }
.msg__thinking-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--amber);
  animation: thinking-pulse 1.2s ease-in-out infinite;
}
@keyframes thinking-pulse {
  0%, 100% { opacity: 0.3; }
  50%      { opacity: 1; }
}
.msg__thinking-body {
  padding: 0 12px 10px;
  white-space: pre-wrap;
  line-height: 1.55;
  color: var(--ink-mute);
  border-top: 1px dashed var(--line);
  padding-top: 10px;
  margin-top: 2px;
}
.msg__content > *:first-child { margin-top: 0; }
.msg__content > *:last-child  { margin-bottom: 0; }

/* Markdown styling inside messages */
.msg__content h1, .msg__content h2, .msg__content h3 {
  font-family: 'Instrument Serif', serif;
  margin: 1.4em 0 0.5em;
  letter-spacing: -0.015em;
}
.msg__content h1 { font-size: 1.7rem; }
.msg__content h2 { font-size: 1.4rem; }
.msg__content h3 { font-size: 1.15rem; }
.msg__content p { margin: 0 0 0.9em; }
.msg__content a { color: var(--amber); text-decoration: underline; text-underline-offset: 3px; }
.msg__content a:hover { color: var(--ink); }
.msg__content ul, .msg__content ol { padding-left: 1.5em; margin: 0 0 1em; }
.msg__content li { margin-bottom: 0.4em; }
.msg__content blockquote {
  margin: 1em 0;
  padding: 8px 0 8px 18px;
  border-left: 2px solid var(--amber);
  color: var(--ink-dim);
  font-style: italic;
}
.msg__content :not(pre) > code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88em;
  background: var(--bg-inset);
  border: 1px solid var(--line);
  padding: 1px 6px;
  border-radius: 2px;
  color: var(--amber);
}
.msg__content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 0.92em;
}
.msg__content th, .msg__content td {
  padding: 8px 12px;
  border: 1px solid var(--line);
  text-align: left;
}
.msg__content th { background: var(--bg-elev); font-family: 'JetBrains Mono', monospace; font-size: 0.85em; }
.msg__content hr { border: none; border-top: 1px dashed var(--line); margin: 1.5em 0; }

/* Code blocks */
.msg__content pre {
  margin: 1em 0;
  background: var(--bg-inset);
  border: 1px solid var(--line);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.86em;
  line-height: 1.55;
  overflow: hidden;
  position: relative;
}
.code-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 14px;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--line);
  font-size: 0.78rem;
  font-family: 'JetBrains Mono', monospace;
}
.code-head__lang { color: var(--amber); letter-spacing: 0.1em; text-transform: uppercase; font-weight: 600; }
.code-head__copy {
  background: transparent; border: 1px solid var(--line-strong);
  color: var(--ink-dim); padding: 3px 10px;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  cursor: pointer; transition: all 120ms ease;
  letter-spacing: 0.04em;
}
.code-head__copy:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.code-head__copy.copied { background: var(--teal); border-color: var(--teal); color: white; }
.msg__content pre code {
  display: block;
  padding: 16px 18px;
  overflow-x: auto;
  background: transparent;
  border: none;
  color: var(--ink);
  font-size: 1em;
  white-space: pre;
}

/* Syntax highlighting tokens */
.tok-keyword { color: var(--amber); font-weight: 600; }
.tok-string  { color: var(--teal-soft); }
.tok-number  { color: #d99a3a; }
.tok-comment { color: var(--ink-mute); font-style: italic; }
.tok-func    { color: var(--teal-soft); }
.tok-tag     { color: var(--amber); }
.tok-attr    { color: var(--teal-soft); }
.tok-punct   { color: var(--ink-dim); }
.tok-builtin { color: var(--amber-soft); }
:root[data-theme="light"] .tok-keyword { color: #b87a14; }
:root[data-theme="light"] .tok-string  { color: #2f6b66; }
:root[data-theme="light"] .tok-number  { color: #9a3e22; }
:root[data-theme="light"] .tok-comment { color: var(--ink-mute); }
:root[data-theme="light"] .tok-func    { color: #2f6b66; }

/* Typing cursor */
.typing-cursor {
  display: inline-block;
  width: 9px; height: 1.05em;
  background: var(--amber);
  vertical-align: -2px;
  margin-left: 1px;
  animation: blink 0.9s steps(2) infinite;
}

/* Composer */
.composer {
  border-top: 1px solid var(--line);
  background: var(--bg);
  padding: 18px 0 24px;
}
.composer__inner {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 24px;
}
.composer__box {
  border: 1px solid var(--line-strong);
  background: var(--bg-elev);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}
.composer__box:focus-within {
  border-color: var(--amber);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--amber) 20%, transparent);
}
.composer__input {
  resize: none;
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  padding: 14px 16px;
  font-family: 'Newsreader', Georgia, serif;
  font-size: 1.05rem;
  line-height: 1.5;
  color: var(--ink);
  min-height: 56px;
  max-height: 240px;
}
.composer__input::placeholder { color: var(--ink-mute); font-style: italic; }

.composer__actions {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 8px 8px 0;
}
.composer__send {
  width: 42px; height: 42px;
  background: var(--amber);
  color: var(--amber-ink);
  border: 1px solid var(--amber);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: transform 80ms ease, background 120ms ease;
}
.composer__send:hover { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.composer__send:active { transform: scale(0.94); }
.composer__send:disabled {
  background: var(--bg-inset); color: var(--ink-mute); border-color: var(--line-strong);
  cursor: not-allowed; opacity: 0.6;
}

.composer__hint {
  display: flex; justify-content: space-between; gap: 12px;
  margin-top: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
  flex-wrap: wrap;
}
.composer__hint kbd {
  background: var(--bg-inset);
  border: 1px solid var(--line);
  padding: 1px 6px;
  font-size: 10px;
  border-radius: 2px;
  color: var(--ink-dim);
}

/* =============================================================
   PRICING
   ============================================================= */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--line);
}
@media (max-width: 920px) { .pricing-grid { grid-template-columns: 1fr; } }

.plan {
  padding: 40px 32px;
  border-right: 1px solid var(--line);
  background: var(--bg-elev);
  display: flex; flex-direction: column;
  position: relative;
}
.plan:last-child { border-right: none; }
@media (max-width: 920px) {
  .plan { border-right: none; border-bottom: 1px solid var(--line); }
  .plan:last-child { border-bottom: none; }
}
.plan--featured {
  background: var(--bg-card);
  border: 2px solid var(--amber);
  margin: -1px;
  z-index: 1;
}
.plan--featured::before {
  content: "RECOMMENDED";
  position: absolute; top: -1px; right: -1px;
  background: var(--amber); color: var(--amber-ink);
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  letter-spacing: 0.14em; padding: 6px 12px; font-weight: 700;
}
.plan__name {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 8px;
}
.plan__tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  margin-bottom: 28px;
}
.plan__price {
  font-family: 'Instrument Serif', serif;
  font-size: 4rem;
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 6px;
}
.plan__price small { font-size: 1rem; color: var(--ink-mute); font-family: 'JetBrains Mono', monospace; }
.plan__price .currency { font-size: 1.5rem; vertical-align: top; color: var(--ink-dim); margin-right: 4px; }
/* Upcoming tiers show "Pricing at launch" instead of a fake number. */
.plan__price--tbd {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-mute);
  line-height: 1;
  /* Match the visual height of the big $0 in the Lite tier so the cards align. */
  height: 4rem;
  display: flex;
  align-items: center;
}
.plan__desc { color: var(--ink-dim); margin-bottom: 28px; min-height: 3em; }
.plan__features {
  list-style: none; padding: 0; margin: 0 0 32px;
  font-size: 0.95rem;
  flex: 1;
}
.plan__features li {
  padding: 10px 0;
  border-top: 1px dashed var(--line);
  display: flex; align-items: flex-start; gap: 10px;
  color: var(--ink-dim);
}
.plan__features li::before {
  content: "→"; color: var(--amber); font-family: 'JetBrains Mono', monospace;
  font-weight: 700; flex-shrink: 0;
}
.plan__cta { width: 100%; justify-content: center; }
.plan__cta--disabled {
  background: transparent;
  border: 1px dashed var(--line-strong);
  color: var(--ink-mute);
  cursor: not-allowed;
}
.plan__cta--disabled:hover {
  background: transparent;
  color: var(--ink-mute);
}

/* =============================================================
   LEGAL PAGES
   ============================================================= */
.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: 80px 28px 64px;
}
.legal__meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-bottom: 18px;
  margin-bottom: 36px;
  border-bottom: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.legal h1 { font-size: clamp(2.4rem, 5vw, 3.8rem); margin-bottom: 24px; }
.legal h2 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 48px 0 14px;
  border-top: 1px dashed var(--line);
  padding-top: 28px;
}
.legal h2:first-of-type { border-top: none; padding-top: 0; }
.legal p, .legal li { color: var(--ink-dim); line-height: 1.7; }
.legal ul, .legal ol { padding-left: 1.5em; margin-bottom: 1em; }
.legal li { margin-bottom: 0.5em; }
.legal a { color: var(--amber); text-decoration: underline; text-underline-offset: 3px; }

/* =============================================================
   404 / error
   ============================================================= */
.error-page {
  min-height: 70vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 40px 24px;
}
.error-page__code {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(6rem, 18vw, 14rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
  color: var(--amber);
}
.error-page h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin: 16px 0 12px; }
.error-page p { color: var(--ink-dim); margin-bottom: 28px; max-width: 44ch; }

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

/* =============================================================
   Mobile nav: burger button + slide-down drawer
   ============================================================= */
.nav__burger {
  display: none;                    /* shown only on mobile via media query above */
  width: 38px; height: 38px;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  cursor: pointer;
  padding: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border-radius: 2px;
  transition: border-color 120ms ease, background 120ms ease;
}
.nav__burger:hover { border-color: var(--ink); }
.nav__burger span {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
  transform-origin: center;
}
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Drawer that slides down beneath topbar */
.nav__drawer {
  display: block;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--line-strong);
  box-shadow: 0 12px 24px rgba(0,0,0,0.18);
  z-index: 49;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: transform 180ms ease, opacity 180ms ease;
}
.nav__drawer[data-open="true"] {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.nav__drawer nav {
  display: flex; flex-direction: column;
  padding: 8px 0;
}
.nav__drawer nav a {
  padding: 14px 24px;
  color: var(--ink);
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 500;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__drawer nav a:last-child { border-bottom: 0; }
.nav__drawer nav a:hover,
.nav__drawer nav a:focus-visible { background: var(--bg-card); color: var(--amber); outline: none; }
.nav__drawer nav a.is-active { color: var(--amber); }
.nav__drawer nav a.is-active::after { content: "●"; font-size: 8px; color: var(--amber); }

/* Hide drawer entirely above mobile breakpoint to avoid layout flicker */
@media (min-width: 821px) {
  .nav__burger { display: none !important; }
  .nav__drawer { display: none !important; }
}

/* iOS Safari: prevent zoom on focus by ensuring input/textarea font-size >= 16px */
@media (max-width: 820px) {
  .composer__input,
  textarea, input[type="text"], input[type="email"], input[type="search"] {
    font-size: 16px !important;
  }
}

/* Make sure chat composer is visible above mobile keyboard */
.chat-composer {
  padding-bottom: max(20px, env(safe-area-inset-bottom));
}