/* Utter launch page — dark editorial: near-black green, warm cream type, one teal accent. */
:root {
  --ink: #0b0e0d;
  --ink-2: #111614;
  --ink-3: #18201d;
  --line: rgba(243, 239, 230, .1);
  --line-2: rgba(243, 239, 230, .18);
  --cream: #f3efe6;
  --cream-dim: rgba(243, 239, 230, .64);
  --cream-faint: rgba(243, 239, 230, .38);
  --teal: #7fd8c3;
  --teal-deep: #1f5f57;
  --teal-glow: rgba(95, 191, 169, .22);
  --strike: #e48b77;
  --serif: "Instrument Serif", Georgia, serif;
  --sans: "Schibsted Grotesk", "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", Consolas, monospace;
  --gutter: clamp(16px, 5vw, 64px);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(900px 520px at 78% -8%, rgba(95, 191, 169, .16), transparent 70%),
    radial-gradient(700px 500px at -10% 30%, rgba(31, 95, 87, .18), transparent 70%),
    var(--ink);
  color: var(--cream);
  font: 17px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; }
img { max-width: 100%; display: block; }
em { font-family: var(--serif); font-style: italic; font-weight: 400; }

/* film grain over everything, very faint */
.grain {
  position: fixed; inset: -50%; z-index: 50; pointer-events: none; opacity: .07;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 1.2s steps(6) infinite;
}
@keyframes grain {
  0% { transform: translate(0, 0); } 20% { transform: translate(-3%, 2%); } 40% { transform: translate(2%, -3%); }
  60% { transform: translate(-2%, -1%); } 80% { transform: translate(3%, 3%); } 100% { transform: translate(0, 0); }
}

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 16px var(--gutter);
  background: linear-gradient(to bottom, rgba(11, 14, 13, .92), rgba(11, 14, 13, .6) 70%, transparent);
  backdrop-filter: blur(10px);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; font-size: 19px; letter-spacing: -.01em; }
.brand img { border-radius: 8px; }
.nav-links { display: flex; align-items: center; gap: clamp(14px, 3vw, 30px); font-size: 15px; }
.nav-links a { text-decoration: none; color: var(--cream-dim); transition: color .2s; }
.nav-links a:hover { color: var(--cream); }
.nav-links .nav-cta { color: var(--ink); background: var(--cream); padding: 7px 15px; border-radius: 999px; font-weight: 600; }
.nav-links .nav-cta:hover { color: var(--ink); background: #fff; }

/* ---------- hero ---------- */
.hero { padding: clamp(40px, 8vw, 96px) var(--gutter) 40px; max-width: 1240px; margin: 0 auto; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px; margin: 0 0 6px;
  font-size: 13px; letter-spacing: .22em; text-transform: uppercase; color: var(--cream-dim);
}
.eyebrow-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 4px var(--teal-glow); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 9px transparent; } }
.hero-title {
  margin: 0; font: 400 clamp(112px, 22vw, 290px)/.86 var(--serif); letter-spacing: -.035em;
  background: linear-gradient(180deg, #fbf8f1 30%, #b9cfc6 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-lede { max-width: 620px; margin: 22px auto 0; text-wrap: balance; font-size: clamp(18px, 2.1vw, 22px); line-height: 1.5; color: var(--cream-dim); }
.hero-lede em { color: var(--cream); font-size: 1.12em; }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 34px; }

.btn {
  display: inline-flex; align-items: center; gap: 10px; padding: 14px 22px; border-radius: 999px;
  font: 600 15.5px/1 var(--sans); text-decoration: none; cursor: pointer; border: 1px solid transparent;
  transition: transform .2s, background .2s, border-color .2s, color .2s;
}
.btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--cream); color: var(--ink); }
.btn-primary:hover { background: #fff; }
.btn-ghost { background: rgba(243, 239, 230, .04); color: var(--cream); border-color: var(--line-2); }
.btn-ghost:hover { border-color: var(--cream-faint); background: rgba(243, 239, 230, .08); }
.btn.copied { border-color: var(--teal); color: var(--teal); }
.btn-primary.copied { background: var(--teal); color: var(--ink); border-color: transparent; }

/* ---------- live demo ---------- */
.stage {
  position: relative; margin: clamp(48px, 7vw, 80px) auto 0; max-width: 1080px; text-align: left;
  border-radius: 26px; background: linear-gradient(160deg, var(--ink-3), var(--ink-2) 60%);
  border: 1px solid var(--line); overflow: hidden;
  box-shadow: 0 40px 120px -40px rgba(0, 0, 0, .9), 0 0 0 1px rgba(0, 0, 0, .4), inset 0 1px 0 rgba(255, 255, 255, .04);
}
.stage::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; transition: opacity .6s;
  background: radial-gradient(520px 320px at 24% 62%, var(--teal-glow), transparent 70%);
  opacity: .55;
}
.stage.listening::before { opacity: 1; }
.stage-chrome { position: relative; display: flex; align-items: center; gap: 8px; padding: 14px 20px; border-bottom: 1px solid var(--line); }
.stage-chrome > span { width: 11px; height: 11px; border-radius: 50%; background: rgba(243, 239, 230, .12); }
.stage-title { margin: 0 0 0 10px; font-size: 13.5px; color: var(--cream-faint); }
.stage-state { margin: 0 0 0 auto; display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--cream-dim); }
.stage-state i { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); }
.stage.listening .stage-state i { background: #e5584c; box-shadow: 0 0 0 4px rgba(229, 88, 76, .2); animation: blink 1s ease-in-out infinite; }
@keyframes blink { 50% { opacity: .35; } }
.stage-body { position: relative; display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); min-height: 340px; }
.stage-wave { position: relative; border-right: 1px solid var(--line); cursor: pointer; touch-action: none; min-height: 260px; }
.stage-wave canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.stage-doc { padding: clamp(24px, 4vw, 44px); display: flex; flex-direction: column; justify-content: center; gap: 22px; }
.doc-text { margin: 0; min-height: 3.2em; font: 400 clamp(24px, 3vw, 34px)/1.3 var(--serif); letter-spacing: -.005em; color: var(--cream); }
.doc-text .w { display: inline-block; white-space: pre; transition: color .3s, opacity .45s, max-width .55s cubic-bezier(.6, 0, .2, 1), filter .45s; max-width: 12em; vertical-align: bottom; }
.doc-text .w.heard { color: var(--cream-faint); animation: rise .35s ease-out both; }
.doc-text .w.strike { color: var(--strike); text-decoration: line-through; text-decoration-thickness: 2px; }
.doc-text .w.gone { opacity: 0; max-width: 0; filter: blur(3px); }
.doc-text .w.fixed { color: var(--teal); }
.doc-text .caret { display: inline-block; width: 2px; height: .95em; margin-left: 2px; background: var(--teal); vertical-align: -.1em; animation: blink 1s steps(2) infinite; }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } }
.doc-fixes { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; min-height: 34px; }
.doc-fixes li {
  font: 500 12.5px/1 var(--mono); padding: 9px 12px; border-radius: 999px; color: var(--cream-dim);
  background: rgba(243, 239, 230, .05); border: 1px solid var(--line); animation: rise .4s ease-out both;
}
.doc-fixes li b { color: var(--teal); font-weight: 500; }
.stage-hint { position: relative; margin: 0; padding: 14px 20px; border-top: 1px solid var(--line); font-size: 13.5px; color: var(--cream-faint); text-align: center; }
kbd {
  font: 500 12px var(--mono); padding: 3px 8px; border-radius: 6px; color: var(--cream);
  border: 1px solid var(--line-2); border-bottom-width: 2px; background: rgba(243, 239, 230, .05);
}
.hint-touch { display: none; }
@media (hover: none) { .hint-touch { display: inline; } .hint-desktop { display: none; } }

/* ---------- promise strip ---------- */
.promise {
  max-width: 1080px; margin: clamp(56px, 8vw, 96px) auto 0; padding: 0 var(--gutter);
  display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(20px, 4vw, 48px);
}
.promise div { border-top: 1px solid var(--line-2); padding-top: 18px; }
.promise strong { display: block; font: 400 30px/1.1 var(--serif); margin-bottom: 8px; }
.promise span { color: var(--cream-dim); font-size: 15.5px; }

/* ---------- how it works ---------- */
.how { max-width: 1080px; margin: clamp(100px, 13vw, 170px) auto 0; padding: 0 var(--gutter); }
.section-title { text-wrap: balance; margin: 0 0 clamp(36px, 6vw, 64px); font: 400 clamp(48px, 7.5vw, 96px)/.98 var(--serif); letter-spacing: -.025em; }
.section-title em { color: var(--teal); }
.feature {
  display: grid; grid-template-columns: minmax(80px, 200px) minmax(0, 1fr); gap: clamp(16px, 4vw, 56px);
  padding: clamp(26px, 4vw, 40px) 0; border-top: 1px solid var(--line);
}
.feature:nth-child(odd) { padding-left: clamp(0px, 8vw, 120px); }
.feature-num { font: italic 400 clamp(56px, 8vw, 104px)/.8 var(--serif); color: transparent; -webkit-text-stroke: 1px var(--cream-faint); }
.feature h3 { margin: 4px 0 10px; font: 600 clamp(22px, 2.6vw, 28px)/1.2 var(--sans); letter-spacing: -.015em; }
.feature p { margin: 0; color: var(--cream-dim); }
/* the part of the Utter window each feature describes, under its text */
.feature-shot { margin: 22px 0 0; }
.feature-shot img {
  width: 100%; height: auto; border-radius: 14px; border: 1px solid var(--line-2);
  background: #1b1c1c; box-shadow: 0 18px 50px -24px rgba(0, 0, 0, .8);
}
.inline-demo { color: var(--cream); white-space: nowrap; }
.inline-demo s { color: var(--strike); text-decoration-thickness: 2px; margin-right: .3em; }

/* ---------- screenshot ---------- */
.showcase { max-width: 1180px; margin: clamp(90px, 12vw, 150px) auto 0; padding: 0 var(--gutter); perspective: 1600px; }
.frame {
  margin: 0; border-radius: 18px; overflow: hidden; border: 1px solid var(--line-2);
  box-shadow: 0 60px 140px -50px rgba(95, 191, 169, .35), 0 30px 80px -30px rgba(0, 0, 0, .9);
  transform: rotateX(16deg) scale(.92); transform-origin: 50% 100%; opacity: .7;
  transition: transform 1.2s cubic-bezier(.2, .7, .1, 1), opacity 1.2s;
}
.frame.in { transform: rotateX(0) scale(1); opacity: 1; }
.frame video { display: block; width: 100%; height: auto; background: var(--ink-2); }
.showcase .section-title { text-align: center; }
.showcase figcaption { margin: 20px auto 0; max-width: 620px; min-height: 3em; text-align: center; font-size: 16px; color: var(--cream-dim); text-wrap: balance; }
.tour-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 0 0 28px; }
.tour-tab {
  position: relative; overflow: hidden; padding: 9px 18px; border-radius: 999px; cursor: pointer;
  font: 500 14.5px var(--sans); color: var(--cream-dim); background: transparent; border: 1px solid var(--line-2);
  transition: color .2s, border-color .2s, background .2s;
}
.tour-tab:hover { color: var(--cream); border-color: var(--cream-faint); }
.tour-tab.active { color: var(--ink); background: var(--cream); border-color: var(--cream); }
/* progress of the playing clip, drawn under the active tab's label */
.tour-tab.active::after { content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: calc(var(--p, 0) * 100%); background: var(--teal-deep); }

/* ---------- install ---------- */
.install { max-width: 1080px; margin: clamp(100px, 13vw, 170px) auto 0; padding: 0 var(--gutter); }
.install .section-title { margin-bottom: 18px; }
.install-lede { margin: 0 0 44px; color: var(--cream-dim); }
.install-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: 20px; }
.card {
  border-radius: 22px; padding: clamp(24px, 3.4vw, 38px); border: 1px solid var(--line);
  background: linear-gradient(170deg, var(--ink-3), var(--ink-2));
  display: flex; flex-direction: column; gap: 12px; align-items: flex-start;
}
.card-agent { background: radial-gradient(500px 300px at 100% 0%, rgba(95, 191, 169, .14), transparent 70%), linear-gradient(170deg, var(--ink-3), var(--ink-2)); }
.card-kicker { margin: 0; font: 500 12px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--teal); }
.card h3 { margin: 0; font: 400 36px/1.05 var(--serif); }
.card p { margin: 0; color: var(--cream-dim); font-size: 15.5px; }
.card .btn { margin-top: 10px; }
.card-note { font-size: 13.5px !important; color: var(--cream-faint) !important; }
.prompt { position: relative; width: 100%; margin-top: 8px; border-radius: 14px; border: 1px solid var(--line-2); background: rgba(0, 0, 0, .35); }
.prompt pre {
  margin: 0; padding: 18px 18px 64px; white-space: pre-wrap; word-break: break-word;
  font: 400 13.5px/1.65 var(--mono); color: var(--cream);
}
.btn-copy { position: absolute; right: 10px; bottom: 10px; padding: 10px 16px; font-size: 14px; background: var(--cream); color: var(--ink); }
.btn-copy:hover { background: #fff; }
.btn-copy.copied { background: var(--teal); color: var(--ink); border-color: transparent; }

/* ---------- footer ---------- */
.footer {
  max-width: 1080px; margin: clamp(100px, 12vw, 160px) auto 0; padding: 30px var(--gutter) 48px;
  border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; align-items: center; gap: 12px 28px;
  font-size: 14px; color: var(--cream-faint);
}
.footer p { margin: 0; flex: 1; min-width: 240px; }
.footer a { color: var(--cream-dim); }
.footer-brand { display: flex; align-items: center; gap: 9px; color: var(--cream); font-weight: 600; }
.footer-brand img { border-radius: 7px; }

/* ---------- entrance ---------- */
.reveal { opacity: 0; transform: translateY(18px); animation: reveal .9s cubic-bezier(.2, .7, .1, 1) forwards; animation-delay: calc(var(--d) * 110ms + 120ms); }
@keyframes reveal { to { opacity: 1; transform: none; } }

/* ---------- small screens ---------- */
@media (max-width: 820px) {
  .nav-links a:not(.nav-cta) { display: none; }
  .stage-body { grid-template-columns: 1fr; }
  .stage-wave { border-right: 0; border-bottom: 1px solid var(--line); min-height: 200px; }
  .promise, .install-grid { grid-template-columns: 1fr; }
  .feature { grid-template-columns: 1fr; gap: 6px; }
  .feature:nth-child(odd) { padding-left: 0; }
  .stage-title { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  .frame { transform: none; opacity: 1; }
}