/* ============================================================
   3am.chat — design system
   Concept: the kitchen window at 3am. Deep indigo night, warm
   lamplight, lo-fi flat shapes. Cozy, not clubby.
   ============================================================ */

@font-face {
  font-family: "Fraunces";
  src: url("/assets/fonts/fraunces-var-latin.woff2") format("woff2");
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: "Karla";
  src: url("/assets/fonts/karla-var-latin.woff2") format("woff2");
  font-weight: 300 800;
  font-display: swap;
}

:root {
  --sky-0: #070a18;
  --sky-1: #0c1026;
  --sky-2: #141a3a;
  --card: #151b38;
  --card-2: #1b2148;
  --line: rgba(233, 236, 255, 0.10);
  --line-strong: rgba(233, 236, 255, 0.18);
  --ink: #eaecff;
  --ink-dim: #a6abd6;
  --ink-faint: #7a80ac;
  --amber: #ffb65c;
  --amber-deep: #f0983a;
  --amber-ink: #2b1a05;
  --amber-glow: rgba(255, 182, 92, 0.22);
  --moon: #f4edda;
  --mint: #8fd9b6;
  --mint-dim: rgba(143, 217, 182, 0.14);
  --rose: #f29a9a;
  --display: "Fraunces", Georgia, serif;
  --body: "Karla", ui-rounded, -apple-system, "Segoe UI", sans-serif;
  --r-lg: 22px;
  --r-md: 16px;
  --r-sm: 10px;
  --wrap: 1080px;
  --shadow: 0 18px 50px -18px rgba(2, 4, 14, 0.75);
}

* { box-sizing: border-box; }

/* атрибут hidden должен побеждать любые display у классов */
[hidden] { display: none !important; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background:
    radial-gradient(120% 60% at 70% -8%, rgba(60, 68, 130, 0.35), transparent 60%),
    linear-gradient(180deg, var(--sky-1) 0%, var(--sky-0) 100%);
  background-color: var(--sky-0);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* faint film grain over everything */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 40;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
}

main { flex: 1; }

.wrap {
  width: min(var(--wrap), calc(100% - 40px));
  margin-inline: auto;
}

h1, h2, h3 {
  font-family: var(--display);
  font-variation-settings: "opsz" 60;
  font-weight: 560;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0 0 0.45em;
  text-wrap: balance;
}

p { margin: 0 0 1em; }

a { color: var(--amber); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--moon); }

::selection { background: rgba(255, 182, 92, 0.32); color: var(--moon); }

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- buttons & chips ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  font: 700 16px/1 var(--body);
  padding: 15px 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn-primary {
  background: linear-gradient(180deg, var(--amber) 0%, var(--amber-deep) 100%);
  color: var(--amber-ink);
  box-shadow: 0 6px 24px -6px var(--amber-glow), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 30px -6px rgba(255, 182, 92, 0.4); color: var(--amber-ink); }
.btn-primary:active { transform: translateY(0); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: var(--amber); color: var(--amber); }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; transform: none; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(21, 27, 56, 0.6);
  color: var(--ink-dim);
  font-size: 15px;
  font-weight: 600;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(9, 12, 28, 0.78);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 14px 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--moon);
  font-family: var(--display);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.brand svg { display: block; }
.site-nav {
  display: flex;
  gap: 22px;
  margin-left: auto;
  align-items: center;
}
.site-nav a:not(.btn) {
  color: var(--ink-dim);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}
.site-nav a:not(.btn):hover { color: var(--moon); }
.site-nav .btn { padding: 11px 20px; font-size: 15px; }
@media (max-width: 680px) {
  .site-nav a:not(.btn) { display: none; }
}

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

.hero { position: relative; overflow: hidden; }
.hero .wrap {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: 30px;
  padding: 72px 0 40px;
  min-height: 540px;
}
.hero-copy { position: relative; z-index: 2; }
.hero-copy h1 {
  font-size: clamp(38px, 6vw, 62px);
  color: var(--moon);
}
.hero-copy .lede {
  font-size: clamp(17px, 2.2vw, 20px);
  color: var(--ink-dim);
  max-width: 30em;
  margin-bottom: 28px;
}
.hero-cta { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.hero-note {
  margin-top: 16px;
  font-size: 14px;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
}
.btn-big { padding: 17px 34px; font-size: 17px; }
.cta-agree {
  margin: 12px 0 0;
  font-size: 13.5px;
  color: var(--ink-faint);
  max-width: 34em;
}

/* мобильный первый экран (ТЗ v1.1 §3.1): арт — фоном за текст, CTA над фолдом */
@media (max-width: 820px) {
  .hero .wrap {
    grid-template-columns: 1fr;
    padding: 26px 0 30px;
    min-height: 0;
  }
  .hero-art {
    position: absolute;
    inset: 0 0 auto;
    max-width: none;
    opacity: 0.2;
    z-index: 0;
    pointer-events: none;
  }
  .hero-copy h1 { font-size: clamp(32px, 8.5vw, 42px); margin-bottom: 0.35em; }
  .hero-copy .lede { font-size: 16.5px; margin-bottom: 20px; }
  .hero-note { margin-top: 10px; font-size: 13.5px; }
  .cta-agree { font-size: 12.5px; margin-top: 10px; }
  .section { padding: 44px 0; }
}
.hero-art { position: relative; z-index: 1; }
.hero-art svg { width: 100%; height: auto; display: block; }

/* staggered entrance */
@media (prefers-reduced-motion: no-preference) {
  .rise { opacity: 0; transform: translateY(14px); animation: rise 0.7s ease forwards; }
  .rise-2 { animation-delay: 0.12s; }
  .rise-3 { animation-delay: 0.24s; }
  .rise-4 { animation-delay: 0.36s; }
  @keyframes rise { to { opacity: 1; transform: none; } }

  .tw { animation: twinkle 4.5s ease-in-out infinite; }
  .tw-2 { animation-delay: 1.4s; animation-duration: 5.5s; }
  .tw-3 { animation-delay: 2.7s; animation-duration: 6.5s; }
  @keyframes twinkle { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }

  .steam { animation: steam 5s ease-in-out infinite; transform-origin: 50% 100%; }
  @keyframes steam {
    0%, 100% { opacity: 0.5; transform: translateY(0) scaleY(1); }
    50% { opacity: 0.9; transform: translateY(-4px) scaleY(1.08); }
  }

  .moon-drift { animation: drift 14s ease-in-out infinite; }
  @keyframes drift { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }
}

/* ---------- sections ---------- */

.section { padding: 64px 0; }
.section-head { max-width: 620px; margin-bottom: 36px; }
.section-head h2 { font-size: clamp(28px, 4vw, 38px); color: var(--moon); }
.section-head p { color: var(--ink-dim); }
.kicker {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 10px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
@media (max-width: 760px) { .grid-3 { grid-template-columns: 1fr; } }

.card {
  background: linear-gradient(180deg, var(--card-2) 0%, var(--card) 100%);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 26px;
  box-shadow: var(--shadow);
}
.card h3 { font-size: 21px; color: var(--moon); margin-bottom: 8px; }
.card p { color: var(--ink-dim); margin: 0; font-size: 16px; }

.step-n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--sky-2);
  border: 1px solid var(--line-strong);
  color: var(--amber);
  font: 700 17px/1 var(--display);
  margin-bottom: 16px;
}

/* topics */
.topic-cloud { display: flex; flex-wrap: wrap; gap: 12px; max-width: 640px; }
.topic-cloud .chip { font-size: 16px; padding: 11px 19px; color: var(--ink); }
.topic-cloud .chip .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--amber); }
.topics-note { margin-top: 18px; color: var(--ink-faint); font-size: 15px; }

/* safety */
.safety-card {
  border-radius: var(--r-lg);
  border: 1px solid rgba(143, 217, 182, 0.25);
  background:
    radial-gradient(90% 130% at 8% 0%, var(--mint-dim), transparent 55%),
    linear-gradient(180deg, var(--card-2), var(--card));
  padding: 36px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
  box-shadow: var(--shadow);
}
@media (max-width: 760px) { .safety-card { grid-template-columns: 1fr; padding: 26px; } }
.safety-card h2 { font-size: clamp(26px, 3.5vw, 34px); color: var(--moon); }
.safety-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 13px; }
.safety-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--ink-dim);
  font-size: 16px;
}
.safety-list .tick {
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--mint-dim);
  color: var(--mint);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  margin-top: 2px;
}

/* FAQ accordion */
.qa {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--card);
  margin-bottom: 12px;
  overflow: hidden;
}
.qa summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 19px 22px;
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after {
  content: "+";
  margin-left: auto;
  color: var(--amber);
  font: 400 24px/1 var(--display);
  transition: transform 0.2s ease;
}
.qa[open] summary::after { transform: rotate(45deg); }
.qa .qa-body { padding: 0 22px 20px; color: var(--ink-dim); font-size: 16px; }
.qa .qa-body p { margin-bottom: 0.6em; }
.qa .qa-body p:last-child { margin-bottom: 0; }

/* closing CTA */
.cta-band {
  text-align: center;
  padding: 72px 0 84px;
}
.cta-band h2 { font-size: clamp(30px, 5vw, 44px); color: var(--moon); }
.cta-band p { color: var(--ink-dim); margin-bottom: 28px; }

/* ---------- content pages (terms, privacy, …) ---------- */

.page-hero { padding: 58px 0 8px; }
.page-hero .crumb {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 12px;
}
.page-hero h1 { font-size: clamp(32px, 5vw, 46px); color: var(--moon); }
.page-hero .lede { color: var(--ink-dim); font-size: 18px; max-width: 38em; }
.page-body { padding: 24px 0 72px; }

.prose { max-width: 720px; }
.prose h2 {
  font-size: 24px;
  color: var(--moon);
  margin-top: 2em;
}
.prose h3 { font-size: 19px; color: var(--ink); margin-top: 1.6em; }
.prose p, .prose li { color: var(--ink-dim); }
.prose ul, .prose ol { padding-left: 22px; margin: 0 0 1.2em; }
.prose li { margin-bottom: 8px; }
.prose li::marker { color: var(--amber); }
.prose strong { color: var(--ink); }
.prose .updated { color: var(--ink-faint); font-size: 14px; }

.callout {
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--amber);
  background: var(--card);
  border-radius: var(--r-sm);
  padding: 16px 20px;
  margin: 1.4em 0;
  color: var(--ink-dim);
  font-size: 16px;
}
.callout.mint { border-left-color: var(--mint); }
.callout p:last-child { margin-bottom: 0; }

/* contact form */
.form {
  display: grid;
  gap: 16px;
  max-width: 560px;
}
.field label {
  display: block;
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 7px;
  color: var(--ink);
}
.field .hint { font-weight: 400; color: var(--ink-faint); }
.field input,
.field select,
.field textarea {
  width: 100%;
  font: 400 16px/1.5 var(--body);
  color: var(--ink);
  background: var(--sky-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  padding: 13px 15px;
}
.field textarea { min-height: 140px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px var(--amber-glow);
}

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

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(6, 8, 20, 0.65);
  padding: 52px 0 34px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
}
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 460px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand p { color: var(--ink-faint); font-size: 15px; max-width: 26em; margin-top: 12px; }
.site-footer h4 {
  font: 800 13px/1 var(--body);
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 14px;
}
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.site-footer li a {
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 15px;
}
.site-footer li a:hover { color: var(--moon); }
.footer-legal {
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  color: var(--ink-faint);
  font-size: 13.5px;
}
.footer-legal .spacer { flex: 1; }

/* ---------- модал (жалоба); подтверждение возраста живёт в самой кнопке ---------- */

.gate-overlay {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(5, 7, 18, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.gate-overlay[hidden] { display: none; }
.gate-card {
  width: min(460px, 100%);
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  padding: 34px 30px 30px;
  box-shadow: var(--shadow);
  text-align: center;
}
.gate-card h2 { color: var(--moon); font-size: 27px; margin-bottom: 8px; }
.gate-card > p { color: var(--ink-dim); font-size: 16px; }
.gate-actions { display: grid; gap: 10px; }

/* ---------- misc ---------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 12px;
  z-index: 100;
  background: var(--amber);
  color: var(--amber-ink);
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}
.skip-link:focus { left: 12px; }

.center { text-align: center; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.center .btn { margin-inline: auto; }

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