/* ERGONI / Kolobok — дизайн-токены (docs/02-design.md) */
:root {
  --color-bg: #FBF8F2;
  --color-surface: #FFFFFF;
  --color-ink: #22201C;
  --color-ink-muted: #6B665C;
  --color-line: #E8E2D6;
  --color-accent: #FFC107;
  --color-accent-strong: #E5A800;
  --color-on-accent: #3A2E00;
  --color-brown: #5D4037;
  --color-success: #2E7D32;
  --radius-card: 16px;
  --radius-btn: 12px;
  --container: 1120px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-bg);
}

img, svg { max-width: 100%; height: auto; }

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

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

.container { max-width: var(--container); margin-inline: auto; padding-inline: clamp(20px, 4vw, 32px); }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--color-ink); color: #fff; padding: 10px 16px; z-index: 100;
}
.skip-link:focus { left: 8px; top: 8px; }

/* Шапка */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(251, 248, 242, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
}
.site-header .container {
  display: flex; align-items: center; gap: 16px;
  min-height: 64px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; letter-spacing: .04em; }
.brand img { width: 32px; height: 32px; }
.nav { margin-left: auto; display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav a {
  padding: 8px 12px; border-radius: 8px; text-decoration: none; font-size: 15px;
  color: var(--color-ink);
}
.nav a:hover { background: var(--color-line); }
.nav-toggle {
  display: none; margin-left: auto;
  background: none; border: 1px solid var(--color-line); border-radius: 8px;
  padding: 10px 12px; font-size: 20px; line-height: 1; cursor: pointer; color: var(--color-ink);
}

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; align-items: center; gap: 8px; }
  .nav {
    display: none; position: absolute; left: 0; right: 0; top: 64px;
    flex-direction: column; align-items: stretch;
    background: var(--color-bg); border-bottom: 1px solid var(--color-line);
    padding: 8px clamp(20px, 4vw, 32px) 16px;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 12px; min-height: 44px; }
}

/* Кнопки */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 12px 22px;
  border-radius: var(--radius-btn); border: 1px solid transparent;
  font-size: 16px; font-weight: 600; text-decoration: none; cursor: pointer;
  transition: background-color .2s ease, border-color .2s ease;
}
.btn-primary { background: var(--color-accent); color: var(--color-on-accent); }
.btn-primary:hover { background: var(--color-accent-strong); color: var(--color-on-accent); }
.btn-secondary { background: transparent; color: var(--color-ink); border-color: var(--color-ink); }
.btn-secondary:hover { background: var(--color-line); color: var(--color-ink); }
.btn[aria-disabled="true"], .btn:disabled {
  background: var(--color-line); color: var(--color-ink-muted);
  border-color: var(--color-line); cursor: not-allowed;
}

/* Секции */
.section { padding-block: clamp(48px, 8vw, 96px); }
.section-alt { background: var(--color-surface); border-block: 1px solid var(--color-line); }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; }
h1 { font-size: clamp(30px, 5vw, 52px); font-weight: 800; margin: 0 0 16px; }
h2 { font-size: clamp(24px, 3.4vw, 36px); font-weight: 800; margin: 0 0 12px; }
h3 { font-size: 19px; font-weight: 700; margin: 0 0 8px; }
.lead { font-size: clamp(17px, 2vw, 20px); color: var(--color-ink-muted); max-width: 56ch; }
.muted { color: var(--color-ink-muted); }
.small { font-size: 14px; }

/* Первый экран */
.hero { display: grid; gap: 32px; grid-template-columns: 1.2fr .8fr; align-items: center; }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; } }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.hero-card {
  background: var(--color-surface); border: 1px solid var(--color-line);
  border-radius: var(--radius-card); padding: 24px;
  display: grid; gap: 12px;
}
.hero-row { display: flex; gap: 12px; align-items: flex-start; }
.hero-row .bubble {
  background: var(--color-bg); border: 1px solid var(--color-line);
  border-radius: 12px; padding: 10px 14px; font-size: 15px;
}
.hero-row .bubble.me { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-on-accent); margin-left: auto; }

/* Карточки */
.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.card {
  background: var(--color-surface); border: 1px solid var(--color-line);
  border-radius: var(--radius-card); padding: 22px;
}
.section:not(.section-alt) .card { background: var(--color-surface); }
.card p { margin: 0; color: var(--color-ink-muted); font-size: 15px; }

/* Чипы статусов */
.chip {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .02em;
  padding: 3px 10px; border-radius: 999px; margin-left: 8px; vertical-align: middle;
}
.chip-ready { background: #E4F2E5; color: var(--color-success); }
.chip-wip { background: #F3EEDD; color: #7A6A2F; }

/* Список устройств */
.device { display: flex; gap: 16px; align-items: baseline; flex-wrap: wrap; }

/* Callout */
.callout {
  border-left: 4px solid var(--color-accent);
  background: var(--color-surface);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  padding: 20px 24px;
}

/* FAQ */
details.faq {
  background: var(--color-surface); border: 1px solid var(--color-line);
  border-radius: var(--radius-card); padding: 16px 20px; margin-bottom: 12px;
}
details.faq summary { font-weight: 700; cursor: pointer; min-height: 24px; }
details.faq p { margin: 10px 0 0; color: var(--color-ink-muted); }

/* Появление при скролле */
.reveal { opacity: 0; transform: translateY(6px); transition: opacity .3s ease, transform .3s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* Футер */
.site-footer { background: var(--color-ink); color: #EDE9E0; margin-top: 32px; }
.site-footer a { color: #EDE9E0; }
.site-footer .container { padding-block: 40px; display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.site-footer h2 { font-size: 16px; letter-spacing: .06em; text-transform: uppercase; margin: 0 0 10px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.site-footer .legal { grid-column: 1 / -1; border-top: 1px solid #3A362F; padding-top: 20px; font-size: 14px; color: #B8B2A6; }