/* Общий стиль публичных страниц: главная, заявка, вход, статьи, калькуляторы.
   Одна палитра на всё: переход со статьи на главную и дальше во вход не
   должен выглядеть как смена сайта. Приложение повторяет те же токены. */
:root {
  color-scheme: light;
  --plane: #f5f5f7; --surface: #ffffff; --ink: #1d1d1f; --ink-2: #3a3a3c; --muted: #6e6e73;
  --border: rgba(60,60,67,0.12); --border-strong: rgba(60,60,67,0.2); --axis: #c7c7cc; --field: #e9e9ee;
  --s1: #1f8a50; --s1-hover: #197143; --s1-soft: rgba(31,138,80,0.12); --on-accent: #ffffff;
  --up: #1f8a50; --down: #d70015; --warm: #fff4e0; --warm-ink: #7a5000;
  --hatch-a: rgba(31,138,80,0.28); --hatch-b: rgba(31,138,80,0.08);
  --band: #1d1d1f; --band-ink: #f5f5f7; --band-accent: #5ad08a;
  --shadow: 0 1px 2px rgba(0,0,0,0.04), 0 18px 50px -20px rgba(0,0,0,0.18);
  --radius: 18px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono: var(--font);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --plane: #000000; --surface: #1c1c1e; --ink: #f5f5f7; --ink-2: #d1d1d6; --muted: #98989d;
    --border: rgba(84,84,88,0.45); --border-strong: rgba(120,120,128,0.5); --axis: #48484a; --field: #2c2c2e;
    --s1: #34c16c; --s1-hover: #4fd081; --s1-soft: rgba(52,193,108,0.16); --on-accent: #062b14;
    --up: #34c16c; --down: #ff453a; --warm: #2c2410; --warm-ink: #ffd88a;
    --hatch-a: rgba(52,193,108,0.32); --hatch-b: rgba(52,193,108,0.1);
    --band: #1c1c1e; --band-ink: #f5f5f7; --band-accent: #5ad08a;
    --shadow: none;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --plane: #000000; --surface: #1c1c1e; --ink: #f5f5f7; --ink-2: #d1d1d6; --muted: #98989d;
  --border: rgba(84,84,88,0.45); --border-strong: rgba(120,120,128,0.5); --axis: #48484a; --field: #2c2c2e;
  --s1: #34c16c; --s1-hover: #4fd081; --s1-soft: rgba(52,193,108,0.16); --on-accent: #062b14;
  --up: #34c16c; --down: #ff453a; --warm: #2c2410; --warm-ink: #ffd88a;
  --hatch-a: rgba(52,193,108,0.32); --hatch-b: rgba(52,193,108,0.1);
  --band: #1c1c1e; --band-ink: #f5f5f7; --band-accent: #5ad08a;
  --shadow: none;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--plane); color: var(--ink); font: 16px/1.6 var(--font); -webkit-font-smoothing: antialiased; }
a { color: var(--s1); text-underline-offset: 3px; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 28px; }
.num { font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }

/* ---------------------------------------------------------------- шапка */
.site-head { position: sticky; top: 0; z-index: 30; background: color-mix(in srgb, var(--plane) 74%, transparent);
             backdrop-filter: saturate(180%) blur(24px); -webkit-backdrop-filter: saturate(180%) blur(24px);
             border-bottom: 1px solid transparent; }
.site-head.scrolled { border-bottom-color: var(--border); }
.site-head .wrap { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px;
         letter-spacing: -0.015em; color: var(--ink); text-decoration: none; flex: none; }
.brand svg { flex: none; display: block; }
.site-nav { display: flex; gap: 4px; flex: 1; }
.site-nav a { color: var(--ink-2); text-decoration: none; font-size: 15px; padding: 8px 12px; border-radius: 9px; }
.site-nav a:hover { color: var(--ink); background: var(--field); }
.site-nav a[aria-current="page"] { color: var(--ink); font-weight: 600; }
.head-actions { display: flex; align-items: center; gap: 8px; flex: none; }
.head-actions .link { color: var(--ink); text-decoration: none; font-size: 15px; padding: 8px 12px; border-radius: 9px; font-weight: 500; }
.head-actions .link:hover { background: var(--field); }
.icon-btn { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 10px; border: 0;
            background: transparent; color: var(--ink-2); cursor: pointer; }
.icon-btn:hover { background: var(--field); color: var(--ink); }

/* -------------------------------------------------------------- кнопки */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; text-decoration: none; cursor: pointer;
       font: inherit; font-size: 15px; font-weight: 600; line-height: 1.2; white-space: nowrap;
       background: var(--s1); color: var(--on-accent); border: 1px solid transparent; border-radius: 11px; padding: 11px 18px; }
.btn:hover { background: var(--s1-hover); }
.btn.lg { font-size: 17px; padding: 15px 24px; border-radius: 13px; }
.btn.small { font-size: 14px; padding: 8px 14px; border-radius: 10px; }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--border-strong); }
.btn.ghost:hover { background: var(--field); }
.btn.dark { background: var(--ink); color: var(--plane); }
.btn.dark:hover { background: var(--ink-2); }
.btn[disabled] { opacity: .55; cursor: default; }
.text-link { color: var(--ink); font-weight: 600; text-decoration: none; }
.text-link:hover { color: var(--s1); }
.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible,
textarea:focus-visible, summary:focus-visible { outline: 2px solid var(--s1); outline-offset: 2px; }

/* ---------------------------------------------------------------- подвал */
.site-foot { border-top: 1px solid var(--border); margin-top: 24px; padding: 36px 0 44px; color: var(--muted); font-size: 14px; }
.site-foot .cols { display: flex; gap: 40px; justify-content: space-between; flex-wrap: wrap; }
.site-foot nav { display: flex; gap: 8px 22px; flex-wrap: wrap; }
.site-foot a { color: var(--ink-2); text-decoration: none; }
.site-foot a:hover { color: var(--s1); }
.site-foot p { margin: 14px 0 0; max-width: 70ch; font-size: 13px; }

@media (max-width: 860px) {
  .site-nav { display: none; }
  .site-head .wrap { gap: 12px; justify-content: space-between; }
}
@media (max-width: 520px) {
  .wrap { padding: 0 18px; }
  .head-actions .link { display: none; }
  .site-head .wrap { height: 60px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }

/* ------------------------------------------ формы: вход, заявка, смена пароля */
.auth-page { min-height: calc(100vh - 68px); display: grid; place-items: center; padding: 32px 18px 64px; }
.panel { background: var(--surface); border: 0; border-radius: 20px; box-shadow: var(--shadow);
         padding: 32px; width: 100%; max-width: 440px; }
.panel.wide { max-width: 560px; }
.panel h1 { font-size: 28px; line-height: 1.15; letter-spacing: -0.025em; margin: 0 0 6px; }
.panel .sub { color: var(--ink-2); font-size: 15.5px; margin: 0 0 22px; }
.panel label, .form-label { display: block; font-size: 14px; font-weight: 550; color: var(--ink-2); margin: 16px 0 6px; }
.panel label .optional { font-weight: 400; color: var(--muted); }
.panel input[type=text], .panel input[type=password], .panel input[type=email], .panel textarea {
  width: 100%; font: inherit; font-size: 16px; color: inherit; background: var(--field); border: 1px solid transparent;
  border-radius: 11px; padding: 12px 14px; }
.panel textarea { min-height: 96px; resize: vertical; }
.panel input:focus, .panel textarea:focus { outline: none; border-color: var(--s1); box-shadow: 0 0 0 3px var(--s1-soft); }
.panel .btn.block { width: 100%; margin-top: 22px; padding: 14px 18px; font-size: 16px; }
.panel .error { margin-top: 12px; color: var(--down); font-size: 14px; min-height: 21px; }
.panel .hint { color: var(--muted); font-size: 14px; margin-top: 12px; }
.panel .divider { border-top: 1px solid var(--border); margin: 22px 0 18px; }
.panel .demo-offer { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 15px; color: var(--ink-2); }
@media (max-width: 520px) { .panel { padding: 24px 20px; border-radius: 16px; } .auth-page { place-items: start center; } }