/* =========================================================
   Chirp — showcase site (minimal)
   Type-driven. Near-black, warm white, ONE warm accent used
   only on live / interactive elements. No glass, no glow.
   The raw→clean transform is carried entirely by type:
   spoken input in dim mono, written output in bright sans.
   ========================================================= */

:root {
  /* dark (default) */
  --bg:        #0a0a0b;
  --ink:       #f4f2ee;
  --ink-soft:  #9a988f;
  --ink-mute:  #63625c;
  --line:      rgba(255, 255, 255, 0.11);
  --line-soft: rgba(255, 255, 255, 0.06);
  --accent:    #eaa24a;   /* the only color on the page */
  --accent-ink:#140d03;
  --field:     rgba(255, 255, 255, 0.03);

  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  --maxw: 760px;
  --pad: clamp(1.25rem, 5vw, 2rem);
}

:root[data-theme="light"] {
  --bg:        #f6f1e8;   /* warm cream */
  --ink:       #211d17;
  --ink-soft:  #6a6153;
  --ink-mute:  #9c9384;
  --line:      rgba(40, 30, 15, 0.16);
  --line-soft: rgba(40, 30, 15, 0.08);
  --accent:    #c1500f;   /* deeper terracotta, legible on cream */
  --accent-ink:#fff7ef;
  --field:     rgba(40, 30, 15, 0.03);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 0.4s ease, color 0.4s ease;
}
a { color: inherit; text-decoration: none; }
strong { font-weight: 600; color: var(--ink); }
::selection { background: var(--accent); color: var(--accent-ink); }

/* ---------- shared type ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 1.1rem;
}

/* ---------- masthead ---------- */
.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.6rem var(--pad);
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.wordmark__mic { width: 17px; height: 17px; color: var(--accent); }

.masthead__nav { display: flex; align-items: center; gap: 1.4rem; }
.navlink {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
  transition: color 0.2s;
}
.navlink:hover { color: var(--accent); }

/* ---------- theme toggle (apple-style pill) ---------- */
.theme-toggle { border: none; background: none; padding: 0; cursor: pointer; -webkit-tap-highlight-color: transparent; }
.theme-toggle__track {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 58px;
  height: 30px;
  padding: 0 7px;
  border-radius: 999px;
  border: 1px solid var(--line);
}
.theme-toggle__icon { font-size: 12px; line-height: 1; z-index: 1; color: var(--ink-mute); transition: opacity 0.3s; }
.theme-toggle__thumb {
  position: absolute;
  top: 3px; left: 3px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--ink);
  transition: transform 0.32s cubic-bezier(0.34, 1.56, 0.64, 1);
}
:root[data-theme="light"] .theme-toggle__thumb { transform: translateX(28px); }
:root[data-theme="light"] .theme-toggle__icon--sun { opacity: 0.28; }
:root[data-theme="dark"]  .theme-toggle__icon--moon { opacity: 0.28; }
.theme-toggle:focus-visible .theme-toggle__track { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---------- layout ---------- */
main { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }

.section-head { margin: 0 0 2.4rem; }
.section-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0;
  max-width: 22ch;
}

/* ---------- hero ---------- */
.hero { padding: clamp(2.5rem, 9vw, 5.5rem) 0 clamp(3rem, 8vw, 5rem); }
.hero__title {
  font-size: clamp(3rem, 11vw, 5.4rem);
  font-weight: 640;
  line-height: 0.94;
  letter-spacing: -0.05em;
  margin: 0 0 1.7rem;
}
.hero__lede {
  font-size: 1.16rem;
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0 0 3rem;
}
.hero__actions { display: flex; align-items: center; gap: 1.6rem; margin: 2.6rem 0 1.1rem; }
.hero__note { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-mute); margin: 0; }

.cta {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  padding-bottom: 3px;
  border-bottom: 1px solid var(--accent);
  transition: color 0.2s, border-color 0.2s;
}
.cta:hover { color: var(--accent); }
.textlink { font-size: 0.95rem; color: var(--ink-soft); transition: color 0.2s; }
.textlink:hover { color: var(--ink); }
.cta:focus-visible, .textlink:focus-visible, .navlink:focus-visible,
.colophon__gh:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

/* ---------- the demo (centerpiece) ---------- */
.demo {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 1.9rem 0 2.2rem;
}
.demo__live {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.1rem;
  min-height: 34px;
}
.keycap {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: border-color 0.15s, color 0.15s;
}
.keycap__glyph { font-size: 0.95rem; }
.keycap__label { font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-mute); }
.keycap.is-held { border-color: var(--accent); color: var(--accent); }
.keycap.is-held .keycap__label { color: var(--accent); }

.waveform { display: inline-flex; align-items: center; gap: 3px; height: 22px; opacity: 0; transition: opacity 0.25s; }
.waveform.is-on { opacity: 1; }
.waveform i {
  width: 2px; height: 20%;
  border-radius: 2px;
  background: var(--accent);
  animation: wave 0.85s ease-in-out infinite;
}
.waveform i:nth-child(1){animation-delay:-.9s}.waveform i:nth-child(2){animation-delay:-.2s}
.waveform i:nth-child(3){animation-delay:-.5s}.waveform i:nth-child(4){animation-delay:-.8s}
.waveform i:nth-child(5){animation-delay:-.1s}.waveform i:nth-child(6){animation-delay:-.6s}
.waveform i:nth-child(7){animation-delay:-.35s}.waveform i:nth-child(8){animation-delay:-.75s}
.waveform i:nth-child(9){animation-delay:-.15s}.waveform i:nth-child(10){animation-delay:-.55s}
.waveform i:nth-child(11){animation-delay:-.9s}.waveform i:nth-child(12){animation-delay:-.25s}
.waveform i:nth-child(13){animation-delay:-.65s}.waveform i:nth-child(14){animation-delay:-.4s}
@keyframes wave { 0%,100% { height: 18%; } 50% { height: 100%; } }

.demo__status {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
  margin-left: auto;
}

.io__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 0.55rem;
}
.io__label--accent { color: var(--accent); }
.io__raw {
  font-family: var(--font-mono);
  font-size: 0.98rem;
  font-style: italic;
  color: var(--ink-mute);
  margin: 0;
  min-height: 1.5em;
}
.io__arrow { display: block; color: var(--ink-mute); margin: 1.2rem 0; font-size: 1.1rem; }
.io__clean {
  font-size: clamp(1.5rem, 4.4vw, 2.15rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink);
  margin: 0;
  min-height: 1.3em;
}
.caret {
  display: inline-block;
  width: 2px;
  height: 1.05em;
  margin-left: 2px;
  vertical-align: text-bottom;
  background: var(--accent);
  animation: blink 1.05s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- features ---------- */
.features { padding: clamp(3rem, 8vw, 5rem) 0; }
.grid { display: grid; grid-template-columns: 1fr 1fr; column-gap: 3rem; }
.item {
  padding: 1.6rem 0;
  border-top: 1px solid var(--line);
}
.item__kicker {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.9rem;
}
.item__title { font-size: 1.15rem; font-weight: 600; letter-spacing: -0.01em; margin: 0 0 0.5rem; }
.item__body { font-size: 0.96rem; color: var(--ink-soft); margin: 0; }

.features__foot {
  margin: 2.4rem 0 0;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
  font-size: 0.96rem;
  color: var(--ink-soft);
  max-width: 60ch;
}

/* ---------- install ---------- */
.install { padding: clamp(2rem, 6vw, 3.5rem) 0 clamp(1rem, 3vw, 2rem); }
.cmd {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--field);
}
.cmd__code {
  margin: 0;
  padding: 1.15rem 1.25rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--ink-soft);
}
.cmd__code code { white-space: pre; }
.tk-prompt { color: var(--ink-mute); user-select: none; }
.tk-cmd { color: var(--ink); }
.tk-op { color: var(--ink-mute); }

.cmd__copy {
  position: absolute;
  top: 0.55rem; right: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
  padding: 0.28rem 0.65rem;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 7px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.cmd__copy:hover { color: var(--accent); border-color: var(--accent); }
.cmd__copy.is-copied { color: var(--accent); border-color: var(--accent); }
.cmd__copy:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.install__note { margin: 1.5rem 0 0; font-size: 0.96rem; color: var(--ink-soft); max-width: 60ch; }
.install__note code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--ink);
}

/* ---------- colophon (footer) ---------- */
.colophon {
  max-width: var(--maxw);
  margin: clamp(2rem, 6vw, 3.5rem) auto 0;
  padding: 2rem var(--pad) 3.5rem;
  border-top: 1px solid var(--line);
}
.colophon__gh {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-soft);
  transition: color 0.2s;
}
.colophon__gh:hover { color: var(--accent); }
.colophon__line { font-size: 0.8rem; color: var(--ink-mute); margin: 0.9rem 0 0; max-width: 56ch; }
.colophon__line--mute { margin-top: 0.35rem; }

/* ---------- scroll reveal (subtle fade only) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 620px) {
  .grid { grid-template-columns: 1fr; column-gap: 0; }
  .hero__actions { gap: 1.4rem; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .caret { animation: none; }
}