:root {
  color-scheme: light dark;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #cbd5e1;
  --accent: #16a34a;
  --accent-text: #ffffff;
  --error: #dc2626;
  --soft: #f1f5f9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --card: #1e293b;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --border: #334155;
    --error: #f87171;
    --soft: #0f172a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border-radius: 16px;
  padding: 28px 24px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, .12);
}
h1 { font-size: 22px; margin: 0 0 12px; }
h2 { font-size: 19px; margin: 0 0 8px; }
.muted { color: var(--muted); font-size: 15px; }
label { display: block; font-size: 14px; margin: 16px 0 6px; }
input[type=tel], input[type=text] {
  width: 100%;
  padding: 12px 14px;
  font-size: 18px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
  color: inherit;
}
#code { letter-spacing: 6px; text-align: center; font-size: 24px; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 12px; color: var(--muted); }
.check input { margin-top: 3px; flex: none; width: 18px; height: 18px; }
.btn {
  display: block;
  width: 100%;
  margin-top: 20px;
  padding: 14px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-text);
  font-size: 17px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
.btn:disabled { opacity: .6; cursor: default; }
.link {
  display: block;
  margin: 12px auto 0;
  background: none;
  border: 0;
  color: var(--muted);
  font-size: 15px;
  text-decoration: underline;
  cursor: pointer;
}
.link:disabled { text-decoration: none; cursor: default; }
.error { color: var(--error); margin: 16px 0 0; font-size: 15px; }
.langs { display: flex; justify-content: flex-end; gap: 10px; margin: -8px 0 8px; font-size: 13px; }
.langs a { color: var(--muted); text-decoration: none; }
.langs a[aria-current] { color: var(--text); font-weight: 600; }
.logo { display: block; max-width: 160px; max-height: 80px; margin: 0 auto 16px; object-fit: contain; }
.welcome { margin: 0 0 8px; white-space: pre-line; }
.note { font-size: 13px; color: var(--muted); background: var(--soft); border-radius: 8px; padding: 8px 10px; }
.promo { margin: 16px 0; padding: 14px; border-radius: 10px; background: var(--soft);
         border-left: 4px solid var(--accent); white-space: pre-line; }
body.has-bg .card { box-shadow: 0 10px 40px rgba(0, 0, 0, .35); }
.layout { width: 100%; max-width: 420px; }
.brand, .d-only { display: none; }

/* Ноутбук и большой экран: слева фирменная панель объекта, справа форма */
@media (min-width: 900px) {
  body.with-brand { padding: 0; display: block; }
  body.with-brand .layout {
    max-width: none;
    min-height: 100vh;
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  }
  body.with-brand .brand {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 64px 7vw;
    color: #fff;
    /* Тёмный градиент поверх цвета объекта: белый текст читается при любом цвете */
    background-color: var(--accent);
    background-image: linear-gradient(135deg, rgba(0, 0, 0, .12), rgba(0, 0, 0, .5));
  }
  /* С фото объекта: лёгкое затемнение под текст, плавно исчезающее к форме — без шва */
  body.with-brand.has-bg .brand {
    background-color: transparent;
    background-image: linear-gradient(90deg, rgba(4, 7, 22, .62) 0%, rgba(4, 7, 22, .38) 65%, rgba(4, 7, 22, 0) 100%);
    text-shadow: 0 2px 18px rgba(0, 0, 0, .45);
  }
  .brand-logo {
    align-self: flex-start;
    max-width: 220px;
    max-height: 110px;
    object-fit: contain;
    margin: 0 0 40px;
    padding: 12px 16px;
    background: #fff;
    border-radius: 14px;
  }
  .brand-kicker { margin: 0 0 10px; font-size: 14px; letter-spacing: .14em; text-transform: uppercase; opacity: .85; }
  .brand-name { margin: 0 0 20px; font-size: clamp(32px, 3.6vw, 52px); line-height: 1.08; }
  .brand-welcome { margin: 0 0 28px; max-width: 34ch; font-size: 20px; white-space: pre-line; opacity: .95; }
  .brand-hint { margin: 0; max-width: 40ch; font-size: 15px; opacity: .8; }
  body.with-brand main.card {
    align-self: center;
    justify-self: center;
    width: min(440px, 88%);
    margin: 48px 0;
    padding: 36px 32px;
  }
  body.with-brand .m-only { display: none !important; }
  body.with-brand .d-only { display: block; }
  .btn:hover { filter: brightness(1.08); }
  .link:hover { color: var(--text); }
}
input:focus-visible, .btn:focus-visible, .link:focus-visible, .langs a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent);
  outline-offset: 2px;
}
[hidden] { display: none !important; }