/* Общие стили теста и админ-панели: фирменные цвета Newton, шапка, кнопки, карточки. */
:root {
  --ink: #13123a;
  --ink-soft: #565a7d;
  --paper: #f5f5fc;
  --card: #ffffff;
  --line: #dedff2;
  --tint: #ecebff;
  --sky: #3716ff;
  --sky-deep: #2a0fd0;
  --sun: #9e2d95;
  --fill: #3716ff;
  --grad: linear-gradient(115deg, #1f7bde 0%, #3716ff 52%, #9e2d95 100%);
  --grad-text: linear-gradient(100deg, #1f7bde 0%, #3716ff 55%, #9e2d95 100%);
  --shadow: rgba(40, 22, 140, .22);
  --danger: #c2372b;
  --ok: #1b8a5a;
  --display: "Unbounded", "Arial Black", system-ui, sans-serif;
  --body: "Golos Text", "Segoe UI", system-ui, -apple-system, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #ecebff; --ink-soft: #a7a9cc; --paper: #0c0c22; --card: #15153a;
    --line: #2b2c5c; --tint: #1f1f4d; --sky: #9283ff; --sky-deep: #b5abff; --sun: #d66bcb;
    --grad-text: linear-gradient(100deg, #5aa8ff 0%, #9283ff 55%, #d66bcb 100%);
    --shadow: rgba(0, 0, 0, .5); --danger: #ff7b6e; --ok: #4fd09a; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 16px/1.55 var(--body);
  padding: env(safe-area-inset-top, 0px) 0 env(safe-area-inset-bottom, 0px);
}
.wrap { max-width: 860px; margin: 0 auto; padding-inline: 16px; }
[hidden] { display: none !important; }
button, input, select { font: inherit; }
:focus-visible { outline: 2px solid var(--sky); outline-offset: 2px; }

/* Шапка */
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-block: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.brand svg { width: 40px; height: 40px; flex: none; }
.brand-word { font: 800 17px/.92 "Montserrat", "Arial Black", system-ui, sans-serif; letter-spacing: -.01em; }
.brand-word span { display: block; }
.lang { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: 3px; background: var(--card); }
.lang button {
  font: 600 13px/1 var(--body); border: 0; background: none; color: var(--ink-soft);
  padding: 8px 14px; border-radius: 999px; cursor: pointer;
}
.lang button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font: 600 13px/1.2 var(--body); letter-spacing: .08em; text-transform: uppercase; color: var(--sky-deep);
}
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--sun); flex: none; }
.grad { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.muted { color: var(--ink-soft); }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 24px; padding: 24px; }
@media (max-width: 560px) { .card { padding: 20px 16px; border-radius: 20px; } }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 0; border-radius: 16px; padding: 16px 26px; cursor: pointer;
  font: 600 17px/1.2 var(--body); text-decoration: none;
}
.btn-main { background: var(--grad); color: #fff; box-shadow: 0 10px 24px -10px var(--shadow); }
.btn-main:hover { filter: brightness(1.06); }
.btn-main:disabled { opacity: .6; cursor: default; filter: none; }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { background: var(--tint); }
.btn-sm { padding: 10px 16px; border-radius: 12px; font-size: 15px; }

.foot { padding: 0 0 32px; font-size: 13px; color: var(--ink-soft); text-align: center; }