/* ==========================================================================
   Zebo - sayt uslublari

   Ranglar, radius shkalasi va "chunky 3D" mexanikasi ilovaning o'z token
   qatlamidan olingan (ios/Zebo/DesignSystem/ZDSTheme.swift). Saytdan ilovaga
   o'tgan odam bir xil dunyoni ko'rishi kerak.

   Uchta qonun (feedback-design-laws-v4):
   1. Matn hech qachon rasm USTIGA yozilmaydi. Karta = rasm tepada, matn
      pastda alohida solid zonada.
   2. Kam, lekin KATTA bloklar.
   3. Duolingo ruhi (katta 3D), lekin klon emas.

   Soya yo'q: kartalar 2pt kontur + pastki qirra bilan qog'oz ustida TURADI.
   Radius roli qat'iy: chip 999 / tugma 16 / karta 18 / hero 24.
   ========================================================================== */

:root {
  --paper: #fff7ec;          /* hech qachon oq emas */
  --surface: #ffffff;
  --surface-tint: #fdf2e3;

  --ink: #3b2a18;            /* to'q iliq jigarrang, hech qachon qora emas */
  --ink-soft: #7a6650;

  --terracotta: #e86117;     /* birlamchi aksent */
  --terracotta-deep: #b8460c;/* uning 3D pastki qirrasi */
  --saffron: #ffc249;
  --saffron-deep: #d99a22;
  --sage: #4a8b5f;
  --bosphorus: #1d7a8c;

  --outline: #3b2a18;        /* 2pt kontur */
  --outline-deep: #c8b49a;   /* neytral pastki qirra */

  --r-chip: 999px;
  --r-btn: 16px;
  --r-card: 18px;
  --r-hero: 24px;

  --edge: 5px;               /* 3D qirra chuqurligi */
  --gutter: clamp(20px, 5vw, 56px);

  --display: ui-rounded, "SF Pro Rounded", "Hiragino Maru Gothic ProN",
    system-ui, -apple-system, sans-serif;
  --text: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #211809;
    --surface: #342817;
    --surface-tint: #3d2f1c;

    --ink: #f6ecdc;
    --ink-soft: #c0ab90;

    --terracotta: #ff7a33;
    --terracotta-deep: #c14e12;
    --saffron: #ffc249;
    --saffron-deep: #b8871a;

    --outline: #0f0a04;
    --outline-deep: #0f0a04;
  }
}

/* --------------------------------------------------------------------- base */

*, *::before, *::after { 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(--paper);
  color: var(--ink);
  font-family: var(--text);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .display, .btn, .num, nav a, .brand {
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

h1 { font-size: clamp(2.3rem, 6vw, 3.9rem); margin: 0; }
h2 { font-size: clamp(1.8rem, 4vw, 2.7rem); margin: 0 0 0.55em; }
h3 { font-size: 1.28rem; margin: 0 0 0.35em; }

p { margin: 0 0 1.1em; color: var(--ink-soft); max-width: 62ch; }

a { color: var(--terracotta); text-underline-offset: 3px; }

:focus-visible {
  outline: 3px solid var(--terracotta);
  outline-offset: 3px;
  border-radius: 6px;
}

img { max-width: 100%; height: auto; display: block; }

.wrap { width: 100%; max-width: 1120px; margin-inline: auto; padding-inline: var(--gutter); }
section { padding-block: clamp(56px, 9vw, 112px); }

.lede { font-size: 1.18rem; color: var(--ink-soft); max-width: 52ch; }

.eyebrow {
  font-family: var(--display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--terracotta);
  margin: 0 0 0.9rem;
}

/* --------------------------------------------------- chunky 3D: the signature
   Soya emas: har bir yuza o'z konturi va pastki qirrasi bilan qog'oz ustida
   fizik turadi. Bosilganda yuza qirra chuqurligicha PASTGA tushadi (scale yo'q). */

.chunk {
  background: var(--surface);
  border: 2px solid var(--outline);
  border-radius: var(--r-card);
  box-shadow: 0 var(--edge) 0 0 var(--outline-deep);
  margin-bottom: var(--edge);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.95rem 1.7rem;
  min-height: 56px;
  font-size: 1.05rem;
  font-weight: 800;
  text-decoration: none;
  border: 2px solid var(--outline);
  border-radius: var(--r-btn);
  transition: transform 0.09s ease, box-shadow 0.09s ease;
}

.btn-primary {
  background: var(--terracotta);
  color: #fff;
  box-shadow: 0 var(--edge) 0 0 var(--terracotta-deep);
  margin-bottom: var(--edge);
}

.btn-quiet {
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 var(--edge) 0 0 var(--outline-deep);
  margin-bottom: var(--edge);
}

.btn:active {
  transform: translateY(var(--edge));
  box-shadow: 0 0 0 0 transparent;
}

@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
}

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

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 72px;
  display: flex;
  align-items: center;
  background: var(--paper);
  border-bottom: 2px solid var(--outline);
}

.nav .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1.4rem; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.2rem;
  color: var(--ink);
  text-decoration: none;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  border: 2px solid var(--outline);
}

.nav-links { display: flex; align-items: center; gap: clamp(0.9rem, 2.4vw, 1.9rem); }

.nav-links a {
  font-size: 0.97rem;
  font-weight: 700;
  color: var(--ink-soft);
  text-decoration: none;
}

.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--terracotta); }

@media (max-width: 640px) { .nav-links a.hide-sm { display: none; } }

.foot {
  border-top: 2px solid var(--outline);
  padding-block: 40px 52px;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.foot .wrap { display: flex; flex-wrap: wrap; gap: 0.9rem 2rem; justify-content: space-between; }
.foot a { color: var(--ink-soft); text-decoration: none; margin-right: 1.3rem; font-weight: 600; }
.foot a:hover { color: var(--terracotta); }

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

.hero { padding-top: clamp(40px, 6vw, 76px); }

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 60px);
  align-items: center;
}

@media (min-width: 900px) { .hero-grid { grid-template-columns: 1.05fr 0.95fr; } }

.hero h1 { margin-bottom: 1rem; }
.hero .lede { margin-bottom: 1.9rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.9rem; }

/* Rasm karta: rasm TEPADA to'liq, matn PASTDA alohida solid zonada.
   Qonun 1 - matn hech qachon rasmning ustiga tushmaydi. */
.scene {
  overflow: hidden;
  padding: 0;
}

.scene img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }

.scene-body {
  padding: 20px 22px 24px;
  border-top: 2px solid var(--outline);
  background: var(--surface);
}

.scene-body p { margin: 0; font-size: 0.98rem; }
.scene-body h3 { margin-bottom: 0.2em; }

/* ------------------------------------------------------------------ numbers */

.figures {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

@media (min-width: 780px) { .figures { grid-template-columns: repeat(4, 1fr); } }

.figure { padding: 22px 20px 24px; text-align: left; }

.figure .num {
  display: block;
  font-size: clamp(2.1rem, 5vw, 2.9rem);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--terracotta);
  line-height: 1;
  margin-bottom: 0.3rem;
}

.figure span.lbl { font-size: 0.98rem; font-weight: 600; color: var(--ink-soft); }

/* -------------------------------------------------------------------- cards */

.cards { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 820px) { .cards { grid-template-columns: repeat(3, 1fr); } }
.cards.two { grid-template-columns: 1fr; }
@media (min-width: 820px) { .cards.two { grid-template-columns: repeat(2, 1fr); } }

.card { padding: 26px 24px 28px; }
.card p { margin: 0; }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.32rem 0.85rem;
  border: 2px solid var(--outline);
  border-radius: var(--r-chip);
  background: var(--saffron);
  color: #3b2a18;
  font-family: var(--display);
  font-weight: 800;
  font-size: 0.85rem;
  margin-bottom: 0.9rem;
}

/* ------------------------------------------------------------------- steps */

.steps { display: grid; gap: 14px; grid-template-columns: 1fr; counter-reset: s; }
@media (min-width: 820px) { .steps { grid-template-columns: repeat(3, 1fr); } }

.step { padding: 24px; position: relative; }

.step .n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 2px solid var(--outline);
  border-radius: 12px;
  background: var(--surface-tint);
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.15rem;
  margin-bottom: 0.9rem;
}

/* -------------------------------------------------------------- prose/legal */

.prose { max-width: 72ch; }
.prose h2 { font-size: 1.45rem; margin-top: 2.2em; margin-bottom: 0.45em; }
.prose h2:first-of-type { margin-top: 1em; }
.prose ul { padding-left: 1.2rem; margin: 0 0 1.2em; color: var(--ink-soft); max-width: 62ch; }
.prose li { margin-bottom: 0.45em; }
.prose .meta {
  font-family: var(--display);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* Ikki tilli huquqiy sahifalarning ingliz qismi */
.en-block {
  margin-top: 3.5rem;
  padding-top: 2.2rem;
  border-top: 2px dashed var(--outline-deep);
  /* Yopishqoq nav 72px; sakrab kelganda sarlavha uning ostida qolmasin. */
  scroll-margin-top: 88px;
}

/* Til almashtirgich — navdagi ikki bo'lakli chip.
   Radius chip rolidan (999). 5px 3D pastki qirra ATAYIN yo'q: qirra birlamchi
   harakatlarga atalgan, bu esa yo'naltirgich va sahifadagi asl tugmadan
   ustun turmasligi kerak. Faol til terracotta bilan belgilanadi — nav
   allaqachon joriy sahifani shu rang bilan ko'rsatadi, ya'ni yangi qoida emas.
   overflow:hidden ishlatilmaydi: u fokus halqasini kesib qo'yardi. */
.lang-switch {
  display: inline-flex;
  gap: 2px;
  padding: 2px;
  border: 2px solid var(--outline);
  border-radius: var(--r-chip);
  flex: none;
}

.lang-switch a {
  padding: 0.18rem 0.58rem;
  border-radius: var(--r-chip);
  font-family: var(--display);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.55;
  color: var(--ink-soft);
  text-decoration: none;
  transition: background-color 200ms ease, color 200ms ease;
}

.lang-switch a[aria-current="true"] { background: var(--terracotta); color: var(--paper); }
.lang-switch a:not([aria-current="true"]):hover { background: var(--surface-tint); color: var(--ink); }

@media (prefers-reduced-motion: reduce) {
  .lang-switch a { transition: none; }
}

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

.faq details {
  padding: 1.1rem 1.3rem;
  margin-bottom: 12px;
}

.faq summary {
  cursor: pointer;
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.07rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

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

.faq summary::after {
  content: "+";
  font-weight: 700;
  color: var(--terracotta);
  font-size: 1.5rem;
  line-height: 1;
}

.faq details[open] summary::after { content: "\2013"; }
.faq details p { margin: 0.8rem 0 0; }

/* ------------------------------------------------------------------ reveal */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  animation: rise 0.6s cubic-bezier(0.2, 0.9, 0.3, 1) forwards;
  animation-timeline: view();
  animation-range: entry 6% cover 24%;
}

@keyframes rise { to { opacity: 1; transform: none; } }

@supports not (animation-timeline: view()) {
  .reveal { opacity: 1; transform: none; animation: none; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; animation: none; }
}

.skip { position: absolute; left: -9999px; }

.skip:focus {
  left: var(--gutter);
  top: 12px;
  z-index: 50;
  background: var(--terracotta);
  color: #fff;
  padding: 0.7rem 1.1rem;
  border-radius: var(--r-btn);
  text-decoration: none;
}