/* Tepo website — the app's own identity: near-black paper, lime evidence, Instrument Sans
   for voice, JetBrains Mono for what the app reads off the page. Dark-only, like the app. */

:root {
  color-scheme: dark;
  --ink: #0c0c0e;          /* page */
  --surface: #141417;      /* rows, panels */
  --raised: #1a1a1e;       /* cards that sit above */
  --line: #25252b;         /* hairlines, tinted toward the page */
  --paper: #f2f0ea;        /* text */
  --muted: #a3a19b;        /* secondary text, warm grey */
  --faint: #6e6d69;        /* captions */
  --lime: #d4ff5c;         /* the one accent */
  --lime-ink: #10120a;     /* text on lime */
  --blue: #5ea2ff;         /* profile colours, as in the app */
  --coral: #ff7a59;
  --violet: #c48bff;
  --mint: #4fd6a8;
  --amber: #ffb35c;

  --sans: "Instrument Sans", -apple-system, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --step--1: 0.8125rem;
  --step-0: 1rem;
  --step-1: 1.1875rem;
  --step-2: 1.5rem;
  --step-3: clamp(1.9rem, 1.4rem + 2vw, 2.6rem);
  --step-4: clamp(2.6rem, 1.6rem + 4.4vw, 4.6rem);

  --wrap: 72rem;
  --gutter: clamp(16px, 4vw, 40px);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font: 400 var(--step-0)/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  padding-inline: var(--gutter);
}

img { max-width: 100%; display: block; }
a { color: inherit; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 6px;
}

.wrap { max-width: var(--wrap); margin-inline: auto; }

.label {
  font: 500 var(--step--1)/1.2 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

h1, h2, h3 { text-wrap: balance; margin: 0; }
p { margin: 0; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 10;
  margin-inline: calc(-1 * var(--gutter));
  padding: 14px var(--gutter);
  background: color-mix(in srgb, var(--ink) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; font-size: var(--step-1); letter-spacing: -0.01em; }
.brand img { width: 30px; height: 30px; border-radius: 7px; }
.site-nav { display: flex; gap: 22px; margin-left: auto; font-size: 0.9375rem; }
.site-nav a { text-decoration: none; color: var(--muted); }
.site-nav a:hover { color: var(--paper); }
@media (max-width: 640px) { .site-nav .optional { display: none; } }

/* ---------- Buttons ---------- */

.button {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  font: 600 1rem/1 var(--sans);
  text-decoration: none;
  border: 1px solid transparent;
}
.button.primary { background: var(--lime); color: var(--lime-ink); }
.button.primary[aria-disabled="true"] { cursor: default; }
.button.ghost { border-color: var(--line); color: var(--paper); }
.button.ghost:hover { border-color: var(--muted); }

/* ---------- Hero ---------- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
  padding-block: clamp(48px, 8vw, 104px) clamp(40px, 6vw, 80px);
}
@media (max-width: 880px) { .hero { grid-template-columns: 1fr; } }

.hero h1 {
  font-size: var(--step-4);
  line-height: 0.98;
  letter-spacing: -0.035em;
  font-weight: 600;
  margin-top: 18px;
}
.hero h1 em { font-style: normal; color: var(--lime); display: block; }
.hero .lede { margin-top: 24px; font-size: var(--step-1); color: var(--muted); max-width: 34rem; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; align-items: center; }
.hero .note { font: 400 var(--step--1)/1.4 var(--mono); color: var(--faint); margin-top: 16px; }

/* The signature: a file name assembled from what Tepo reads off the page. */
.reading {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: clamp(20px, 3vw, 28px);
  display: grid;
  gap: 18px;
}
.reading-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.reading-head .label { color: var(--lime); }
.reading-head .replay {
  font: 500 var(--step--1)/1 var(--mono); color: var(--muted);
  background: none; border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; cursor: pointer;
}
.reading-head .replay:hover { color: var(--paper); border-color: var(--muted); }

.evidence { display: grid; gap: 1px; background: var(--line); border-radius: 12px; overflow: hidden; }
.evidence div {
  display: grid; grid-template-columns: 7.2rem 1fr; gap: 12px; align-items: baseline;
  background: var(--surface); padding: 11px 14px;
}
.evidence dt { font: 500 0.75rem/1.2 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--blue); }
.evidence dd { margin: 0; font-size: 0.9375rem; color: var(--paper); }
.evidence .key-lime dt { color: var(--lime); }

.filename {
  font: 500 clamp(0.95rem, 0.85rem + 0.5vw, 1.125rem)/1.45 var(--mono);
  color: var(--paper);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--lime);
  overflow-wrap: anywhere;
}
.filename .token { transition: color 0.35s ease, background-color 0.35s ease; border-radius: 4px; }
.filename .token.lit { background: color-mix(in srgb, var(--lime) 18%, transparent); color: var(--lime); }
.folder { font-size: var(--step--1); color: var(--muted); }
.folder b { font-weight: 500; color: var(--blue); }

/* Playback (script only): everything stays visible; rows and file-name parts start dimmed and
   light up in sequence, so any frame, including a link preview, shows the whole reading. */
.reading .evidence div, .reading .filename .token { transition: opacity 0.4s ease, color 0.35s ease, background-color 0.35s ease; }
.reading.playing .evidence div { opacity: 0.35; }
.reading.playing .evidence div.shown { opacity: 1; }
.reading.playing .filename .token { color: var(--faint); background: none; }
.reading.playing .filename .token.shown { color: var(--paper); }
.reading.playing .filename .token.shown.lit { color: var(--lime); background: color-mix(in srgb, var(--lime) 18%, transparent); }

/* ---------- Sections ---------- */

.section { padding-block: clamp(56px, 8vw, 104px); border-top: 1px solid var(--line); }
.section-head { display: grid; gap: 14px; max-width: 42rem; margin-bottom: clamp(32px, 5vw, 56px); }
.section-head h2 { font-size: var(--step-3); line-height: 1.05; letter-spacing: -0.025em; font-weight: 600; }
.section-head p { color: var(--muted); font-size: var(--step-1); }

/* How it works — a real sequence, so it's numbered. */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(20px, 3vw, 40px); list-style: none; padding: 0; margin: 0; counter-reset: step; }
@media (max-width: 800px) { .steps { grid-template-columns: 1fr; } }
.steps li { counter-increment: step; display: grid; gap: 10px; align-content: start; }
.steps li::before {
  content: counter(step);
  font: 600 0.875rem/1 var(--mono);
  width: 32px; height: 32px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--lime); color: var(--lime-ink);
}
.steps h3 { font-size: var(--step-2); letter-spacing: -0.015em; font-weight: 600; }
.steps p { color: var(--muted); }

/* Features — a two-column list, not a wall of cards. */
.features { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 clamp(24px, 5vw, 64px); }
@media (max-width: 760px) { .features { grid-template-columns: 1fr; } }
.feature { padding-block: 22px; border-top: 1px solid var(--line); display: grid; gap: 8px; }
.feature h3 { font-size: var(--step-1); font-weight: 600; letter-spacing: -0.01em; }
.feature p { color: var(--muted); }
.ids { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.ids span {
  font: 500 0.75rem/1 var(--mono); letter-spacing: 0.04em;
  padding: 6px 8px; border-radius: 6px; border: 1px solid var(--line); color: var(--paper);
}

/* Screens — the real app, no device frames. */
.screens {
  display: grid; grid-auto-flow: column; grid-auto-columns: minmax(200px, 250px);
  gap: 20px; overflow-x: auto; padding-bottom: 12px;
  scroll-snap-type: x mandatory;
}
.screens figure { margin: 0; scroll-snap-align: start; display: grid; gap: 12px; }
.screens img { border-radius: 26px; border: 1px solid var(--line); aspect-ratio: 1320 / 2868; width: 100%; height: auto; background: var(--surface); }
.screens figcaption { font-size: var(--step--1); color: var(--muted); }

/* Pricing */
.plans { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; align-items: stretch; }
@media (max-width: 760px) { .plans { grid-template-columns: 1fr; } }
.plan { border: 1px solid var(--line); border-radius: 24px; padding: clamp(22px, 3vw, 32px); display: grid; gap: 18px; align-content: start; background: var(--surface); }
.plan.pro { background: var(--raised); border-color: color-mix(in srgb, var(--lime) 45%, var(--line)); }
.plan h3 { font-size: var(--step-2); font-weight: 600; letter-spacing: -0.015em; display: flex; align-items: baseline; gap: 10px; }
.plan .price { font: 600 var(--step-3)/1 var(--sans); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.plan .price small { font: 400 var(--step-0)/1 var(--sans); color: var(--muted); letter-spacing: 0; }
.plan ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.plan li { padding-left: 26px; position: relative; color: var(--paper); }
.plan li::before { content: ""; position: absolute; left: 4px; top: 0.55em; width: 10px; height: 6px; border-left: 2px solid var(--lime); border-bottom: 2px solid var(--lime); transform: rotate(-45deg); }
.options { display: grid; gap: 1px; background: var(--line); border-radius: 14px; overflow: hidden; }
.options div { display: flex; justify-content: space-between; gap: 12px; padding: 12px 14px; background: var(--surface); font-variant-numeric: tabular-nums; }
.options span:last-child { color: var(--muted); text-align: right; }
.badge { font: 600 0.6875rem/1 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; background: var(--lime); color: var(--lime-ink); padding: 5px 7px; border-radius: 5px; }
.fine { font-size: var(--step--1); color: var(--faint); margin-top: 18px; }

/* FAQ */
.faq { display: grid; max-width: 48rem; }
.faq details { border-top: 1px solid var(--line); padding-block: 18px; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 600; font-size: var(--step-1); list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--mono); color: var(--lime); }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--muted); margin-top: 12px; max-width: 42rem; }

/* ---------- Footer ---------- */

.site-footer { border-top: 1px solid var(--line); padding-block: 40px 56px; }
.site-footer .wrap { display: grid; gap: 18px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 20px; }
.site-footer nav a { color: var(--muted); text-decoration: none; }
.site-footer nav a:hover { color: var(--paper); }
.site-footer p { font-size: var(--step--1); color: var(--faint); max-width: 48rem; }
.copyable { font-family: var(--mono); user-select: all; }

/* ---------- Legal pages ---------- */

.doc { max-width: 42rem; margin-inline: auto; padding-block: clamp(40px, 7vw, 88px); }
.doc h1 { font-size: var(--step-3); line-height: 1.08; letter-spacing: -0.025em; font-weight: 600; }
.doc h2 { font-size: var(--step-2); letter-spacing: -0.015em; font-weight: 600; margin-top: 44px; }
.doc p, .doc ul { color: var(--muted); margin-top: 14px; }
.doc ul { padding-left: 1.25rem; display: grid; gap: 8px; }
.doc strong { color: var(--paper); font-weight: 600; }
.doc a { color: var(--lime); text-underline-offset: 3px; }
.doc .updated { font: 400 var(--step--1)/1.4 var(--mono); color: var(--faint); margin-top: 12px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ---------- Before / after ---------- */
.compare { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 18px; overflow: hidden; }
.compare-row { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 20px; padding: 16px 20px; background: var(--surface); align-items: baseline; }
.compare-head { background: var(--ink); font: 500 0.75rem/1.2 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); padding-block: 12px; }
.compare-head span:last-child { color: var(--lime); }
.compare code { font: 400 0.9375rem/1.45 var(--mono); overflow-wrap: anywhere; }
.compare .before { color: var(--faint); text-decoration: line-through; text-decoration-color: color-mix(in srgb, var(--faint) 60%, transparent); }
.compare .after { color: var(--paper); display: block; }
.compare .where { display: block; margin-top: 4px; font-size: var(--step--1); color: var(--muted); }
@media (max-width: 640px) {
  .compare-row { grid-template-columns: 1fr; gap: 6px; }
  .compare-head { display: none; }
}

/* ---------- Who it's for ---------- */
.audience { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(20px, 3vw, 40px); }
.audience div { display: grid; gap: 8px; align-content: start; padding-top: 18px; border-top: 2px solid var(--blue); }
.audience div:nth-child(2) { border-top-color: var(--mint); }
.audience div:nth-child(3) { border-top-color: var(--violet); }
.audience h3 { font-size: var(--step-1); font-weight: 600; letter-spacing: -0.01em; }
.audience p { color: var(--muted); }
@media (max-width: 760px) { .audience { grid-template-columns: 1fr; } }

/* ---------- Closing ---------- */
.closing .wrap { display: grid; gap: 16px; justify-items: start; }
.closing h2 { font-size: var(--step-3); line-height: 1.05; letter-spacing: -0.025em; font-weight: 600; max-width: 24ch; }
.closing p { color: var(--muted); font-size: var(--step-1); max-width: 38rem; }
.closing .button { margin-top: 8px; }

/* ---------- Languages ---------- */
.languages { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: var(--step--1); }
.languages a { color: var(--muted); text-decoration: none; }
.languages a:hover, .languages a[aria-current="page"] { color: var(--paper); }

/* ---------- CJK ---------- */
/* Break Japanese and Chinese between phrases, not inside words; Korean between words. */
:lang(ja) :is(h1, h2, h3, .lede, p), :lang(zh) :is(h1, h2, h3, .lede, p) { word-break: auto-phrase; line-break: strict; }
:lang(ko) :is(h1, h2, h3, p) { word-break: keep-all; }
:lang(ja) .hero h1, :lang(zh) .hero h1, :lang(ko) .hero h1 { font-size: clamp(2.3rem, 1.5rem + 3.6vw, 4rem); line-height: 1.12; letter-spacing: 0; }
:lang(ja) .label, :lang(zh) .label, :lang(ko) .label { letter-spacing: 0.02em; }