:root {
  color-scheme: light dark;
  --primary: #6650a4;
  --on-primary: #ffffff;
  --primary-container: #e9ddff;
  --on-primary-container: #221048;
  --background: #fbf8ff;
  --on-background: #1d1a22;
  --surface: #ffffff;
  --surface-variant: #f2ecf8;
  --on-surface-variant: #5d5668;
  --outline: #d8cfdf;
  --danger: #ba1a1a;
  --danger-container: #ffdad6;
  --on-danger-container: #410002;
  --success-container: #d8f4df;
  --on-success-container: #11391e;
  --shadow: 0 18px 55px rgba(35, 20, 58, .10);
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #d0bcff;
    --on-primary: #251247;
    --primary-container: #3a285f;
    --on-primary-container: #f0e7ff;
    --background: #121018;
    --on-background: #f4eff8;
    --surface: #1c1724;
    --surface-variant: #282233;
    --on-surface-variant: #d8cee2;
    --outline: #3c3349;
    --danger: #ffb4ab;
    --danger-container: #5e1713;
    --on-danger-container: #ffdad6;
    --success-container: #173c29;
    --on-success-container: #c3f5d3;
    --shadow: 0 18px 55px rgba(0, 0, 0, .28);
  }
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--background); }
body {
  margin: 0;
  min-height: 100%;
  background: var(--background);
  color: var(--on-background);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.62;
}
a { color: var(--primary); }
button, input { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: default; opacity: .58; }

.site-header {
  border-bottom: 1px solid var(--outline);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(14px);
}
.header-inner, .page-shell, .site-footer {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
}
.header-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: inline-flex; align-items: center; min-width: 0; }
.brand img { display: block; width: min(310px, 58vw); height: auto; }
.header-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.lang-button, .nav-link {
  min-height: 40px;
  border-radius: 13px;
  border: 1px solid var(--outline);
  background: var(--surface-variant);
  color: var(--on-background);
  padding: 8px 12px;
  text-decoration: none;
}
.lang-button[aria-pressed="true"] { border-color: var(--primary); color: var(--primary); }

.page-shell { padding: 38px 0 54px; }
.hero-card, .content-card, .auth-card, .status-card {
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: 22px;
  box-shadow: var(--shadow);
}
.hero-card { padding: clamp(22px, 4vw, 38px); margin-bottom: 18px; }
.content-card, .auth-card, .status-card { padding: clamp(18px, 3vw, 28px); margin-top: 16px; }
.eyebrow { color: var(--primary); font-weight: 760; letter-spacing: .04em; text-transform: uppercase; font-size: .82rem; }
h1 { margin: 6px 0 12px; line-height: 1.16; font-size: clamp(2rem, 7vw, 3.25rem); }
h2 { margin: 0 0 12px; line-height: 1.25; font-size: clamp(1.25rem, 4vw, 1.65rem); }
h3 { margin: 20px 0 8px; line-height: 1.3; }
p { margin: 0 0 12px; }
ul { margin: 8px 0 14px; padding-left: 22px; }
li + li { margin-top: 6px; }
.muted { color: var(--on-surface-variant); }
.notice {
  padding: 14px 16px;
  border-radius: 15px;
  background: var(--primary-container);
  color: var(--on-primary-container);
  margin: 14px 0;
}
.danger-notice { background: var(--danger-container); color: var(--on-danger-container); }
.success-notice { background: var(--success-container); color: var(--on-success-container); }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.link-card { display: block; text-decoration: none; color: inherit; padding: 16px; border: 1px solid var(--outline); border-radius: 16px; background: var(--surface-variant); }
.link-card strong { color: var(--primary); display: block; margin-bottom: 4px; }

.button-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.button {
  min-height: 46px;
  border-radius: 14px;
  border: 1px solid transparent;
  padding: 10px 16px;
  font-weight: 720;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.button-primary { background: var(--primary); color: var(--on-primary); }
.button-secondary { background: var(--surface-variant); border-color: var(--outline); color: var(--on-background); }
.button-danger { background: var(--danger-container); color: var(--on-danger-container); border-color: color-mix(in srgb, var(--danger) 35%, var(--outline)); }

.form-field { margin-top: 14px; }
.form-field label { display: block; font-weight: 700; margin-bottom: 6px; }
.form-field input[type="text"] {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--outline);
  border-radius: 14px;
  background: var(--surface-variant);
  color: var(--on-background);
  padding: 10px 13px;
}
.check-row { display: flex; align-items: flex-start; gap: 10px; margin-top: 16px; }
.check-row input { width: 20px; height: 20px; margin-top: 3px; }
.account-summary { display: flex; align-items: center; gap: 14px; }
.account-avatar { width: 58px; height: 58px; border-radius: 50%; background: var(--primary-container); object-fit: cover; display: grid; place-items: center; font-weight: 800; color: var(--on-primary-container); }
.account-meta { min-width: 0; }
.account-name { font-weight: 800; font-size: 1.08rem; overflow-wrap: anywhere; }
.account-sub { color: var(--on-surface-variant); overflow-wrap: anywhere; }
.preview-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; margin-top: 14px; }
.preview-item { border: 1px solid var(--outline); border-radius: 14px; padding: 12px; background: var(--surface-variant); }
.preview-item b { display: block; font-size: 1.15rem; color: var(--primary); }
.status-line { min-height: 24px; margin-top: 12px; color: var(--on-surface-variant); }
.status-line.error { color: var(--danger); }
.status-line.success { color: var(--on-success-container); }
.telegram-slot { min-height: 48px; display: flex; align-items: center; }
[hidden] { display: none !important; }

.site-footer { padding: 0 0 34px; color: var(--on-surface-variant); font-size: .92rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 8px; }

@media (max-width: 700px) {
  .header-inner { align-items: flex-start; padding: 12px 0; flex-direction: column; }
  .header-actions { width: 100%; justify-content: flex-start; }
  .grid, .preview-list { grid-template-columns: 1fr; }
  .button { width: 100%; }
  .brand img { width: min(320px, 84vw); }
}