/* «Лесенка знаний» — основные стили. Без сборки, без внешних зависимостей. */
@font-face {
  font-family: "Onest"; font-style: normal; font-weight: 400 800; font-display: swap;
  src: url("../fonts/onest-cyrillic.woff2") format("woff2");
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: "Onest"; font-style: normal; font-weight: 400 800; font-display: swap;
  src: url("../fonts/onest-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Цвета: светлая тема по умолчанию, тёмная — по настройке устройства. */
:root {
  --c-bg: #f4f7fb;
  --c-surface: #ffffff;
  --c-surface-2: #eef3f8;
  --c-text: #18233a;
  --c-muted: #5a6880;
  --c-border: #dfe6ef;
  --c-border-strong: #c6d2e1;
  --c-primary: #1fa97a;          /* фирменный зелёный: полосы, ступени, логотип */
  --c-primary-ink: #0f6e4f;      /* зелёный текст */
  --c-primary-soft: #e2f5ec;
  --c-btn: #12825c;              /* фон главной кнопки (контраст с белым ≥ 4.5) */
  --c-btn-hover: #0e6d4c;
  --c-on-primary: #ffffff;
  --c-accent: #ffc23d;
  --c-accent-hover: #ffb81a;
  --c-accent-ink: #7a5200;
  --c-accent-soft: #fff3d3;
  --c-on-accent: #3d2c00;
  --c-blue: #3d7bfd;
  --c-blue-ink: #2350c2;
  --c-blue-soft: #e7eeff;
  --c-danger: #e5484d;
  --c-danger-hover: #c93b40;
  --c-danger-ink: #a8262c;
  --c-danger-soft: #fde9ea;
  --c-violet: #7c4fe6;
  --c-violet-ink: #5b34c7;
  --c-violet-soft: #efe8ff;
  --c-input: #ffffff;
  --c-img-bg: #ffffff;
  --c-footer-bg: #18233a;
  --c-footer-text: #d7deeb;
  --c-footer-muted: #a8b3c9;
  --c-backdrop: rgba(24, 35, 58, .5);
  --c-primary-dark: var(--c-primary-ink); /* старое имя, используется в admin.css */
  --radius: 16px;
  --radius-sm: 12px;
  --shadow: 0 1px 2px rgba(24, 35, 58, .05);
  --shadow-lg: 0 8px 24px rgba(24, 35, 58, .10);
  --font: "Onest", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --focus: 0 0 0 3px rgba(61, 123, 253, .45);
  --header-h: 64px;
  --tabbar-h: 64px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --c-bg: #0f1620;
    --c-surface: #172130;
    --c-surface-2: #1e2a3b;
    --c-text: #e5ecf5;
    --c-muted: #9babbf;
    --c-border: #2a3849;
    --c-border-strong: #3a4b60;
    --c-primary: #2fbf8c;
    --c-primary-ink: #7fe0bb;
    --c-primary-soft: #143a2d;
    --c-btn: #2fbf8c;
    --c-btn-hover: #4bcf9e;
    --c-on-primary: #052419;
    --c-accent: #ffc94f;
    --c-accent-hover: #ffd36e;
    --c-accent-ink: #ffd77a;
    --c-accent-soft: #3a2f12;
    --c-on-accent: #2a1e00;
    --c-blue: #6b9bff;
    --c-blue-ink: #a9c2ff;
    --c-blue-soft: #1a2846;
    --c-danger: #ff6b70;
    --c-danger-hover: #ff8a8e;
    --c-danger-ink: #ffadb1;
    --c-danger-soft: #3d1e21;
    --c-violet: #a685ff;
    --c-violet-ink: #c8b3ff;
    --c-violet-soft: #2a2145;
    --c-input: #121b27;
    --c-footer-bg: #0b1119;
    --c-footer-text: #c9d3e0;
    --c-footer-muted: #8e9bb0;
    --c-backdrop: rgba(0, 0, 0, .6);
    --shadow: 0 1px 2px rgba(0, 0, 0, .3);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, .4);
    --focus: 0 0 0 3px rgba(107, 155, 255, .55);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: var(--font); font-size: 17px; line-height: 1.55;
  color: var(--c-text); background: var(--c-bg);
  display: flex; flex-direction: column; min-height: 100vh;
}
img { max-width: 100%; height: auto; }
a { color: var(--c-blue-ink); text-underline-offset: 2px; }
a:hover { color: var(--c-blue); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; text-wrap: balance; letter-spacing: -.01em; }
h1 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); font-weight: 800; }
h2 { font-size: clamp(1.3rem, 2.6vw, 1.7rem); font-weight: 800; }
h3 { font-size: 1.15rem; font-weight: 700; }
p { margin: 0 0 1em; }
:focus-visible { outline: none; box-shadow: var(--focus); border-radius: 6px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: 12px; top: -60px; background: var(--c-text); color: var(--c-bg); padding: 10px 14px; border-radius: 8px; z-index: 100; }
.skip-link:focus { top: 12px; color: var(--c-bg); }

.container { width: 100%; max-width: 1160px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.site-main { flex: 1; padding: 24px 0 56px; outline: none; }
.muted { color: var(--c-muted); }
.small { font-size: .88rem; }
.center { text-align: center; }
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }
.stack > * + * { margin-top: 16px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.row-between { justify-content: space-between; }
.num, .tabular { font-variant-numeric: tabular-nums; }

/* Значки (SVG) */
.ico { width: 1.25em; height: 1.25em; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; vertical-align: -.22em; }
.subj-ico { width: 44px; height: 44px; flex: none; border-radius: 12px; display: inline-grid; place-items: center; }
.subj-ico .ico { width: 24px; height: 24px; }
.subj-ico.sm { width: 28px; height: 28px; border-radius: 8px; vertical-align: middle; margin-right: 6px; }
.subj-ico.sm .ico { width: 17px; height: 17px; }
.tone-green { background: var(--c-primary-soft); color: var(--c-primary-ink); }
.tone-blue { background: var(--c-blue-soft); color: var(--c-blue-ink); }
.tone-yellow { background: var(--c-accent-soft); color: var(--c-accent-ink); }
.tone-violet { background: var(--c-violet-soft); color: var(--c-violet-ink); }

/* Шапка */
.site-header { background: var(--c-surface); border-bottom: 1px solid var(--c-border); position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50; }
.header-inner { display: flex; align-items: center; gap: 20px; min-height: var(--header-h); }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--c-text); font-weight: 800; font-size: 1.12rem; letter-spacing: -.01em; }
.brand:hover { color: var(--c-text); }
.main-nav { display: flex; align-items: center; gap: 16px; flex: 1; justify-content: space-between; }
.main-nav ul { list-style: none; display: flex; gap: 2px; margin: 0; padding: 0; }
.main-nav ul a { display: block; padding: 8px 12px; border-radius: 10px; color: var(--c-muted); text-decoration: none; font-weight: 600; }
.main-nav ul a:hover { background: var(--c-surface-2); color: var(--c-text); }
.main-nav ul a[aria-current="page"] { background: var(--c-surface-2); color: var(--c-text); }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.points-chip { font-weight: 700; font-size: .85rem; background: var(--c-accent-soft); color: var(--c-accent-ink); padding: 5px 11px; border-radius: 999px; white-space: nowrap; text-decoration: none; }
.points-chip:hover { color: var(--c-accent-ink); }
.user-chip { display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--c-text); font-weight: 600; padding: 4px 10px 4px 4px; border-radius: 999px; background: var(--c-surface-2); max-width: 220px; }
.user-chip:hover { color: var(--c-text); }
.user-chip span:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--c-accent); color: var(--c-on-accent); display: grid; place-items: center; font-weight: 800; flex: none; }
.inline-form { display: inline; margin: 0; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 0; width: 44px; height: 44px; border-radius: 10px; cursor: pointer; position: relative; color: var(--c-text); }
.nav-toggle-bar, .nav-toggle-bar::before, .nav-toggle-bar::after { display: block; width: 22px; height: 2.5px; background: currentColor; border-radius: 2px; position: absolute; left: 11px; transition: transform .2s; }
.nav-toggle-bar { top: 21px; }
.nav-toggle-bar::before { content: ""; top: -7px; left: 0; }
.nav-toggle-bar::after { content: ""; top: 7px; left: 0; }

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .main-nav { display: none; position: absolute; left: 0; right: 0; top: var(--header-h); background: var(--c-surface); border-bottom: 1px solid var(--c-border); flex-direction: column; align-items: stretch; padding: 12px max(16px, env(safe-area-inset-right, 0px)) 16px max(16px, env(safe-area-inset-left, 0px)); box-shadow: var(--shadow-lg); }
  .main-nav.open { display: flex; }
  .main-nav ul { flex-direction: column; }
  .nav-actions { flex-wrap: wrap; }
}

/* Нижнее меню на телефоне (для вошедших учеников) */
.tabbar { display: none; }
@media (max-width: 760px) {
  .has-tabbar { padding-bottom: calc(var(--tabbar-h) + env(safe-area-inset-bottom, 0px)); }
  .has-tabbar .main-nav ul .tab-dup { display: none; }
  .tabbar {
    display: grid; grid-template-columns: repeat(4, 1fr); position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
    background: var(--c-surface); border-top: 1px solid var(--c-border);
    padding: 6px max(4px, env(safe-area-inset-right, 0px)) calc(6px + env(safe-area-inset-bottom, 0px)) max(4px, env(safe-area-inset-left, 0px));
  }
  .tabbar a { display: grid; justify-items: center; gap: 2px; padding: 4px 0; min-height: 50px; font-size: .72rem; font-weight: 700; color: var(--c-muted); text-decoration: none; border-radius: 10px; }
  .tabbar a .ico { width: 24px; height: 24px; }
  .tabbar a[aria-current="page"] { color: var(--c-primary-ink); }
  .tabbar a[aria-current="page"] .ico { stroke-width: 2.4; }
}

/* Кнопки */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 20px; border-radius: 12px; border: 2px solid transparent; font: inherit; font-weight: 700; text-decoration: none; cursor: pointer; transition: transform .12s ease, background-color .15s, border-color .15s; line-height: 1.2; min-height: 44px; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--c-btn); color: var(--c-on-primary); }
.btn-primary:hover { background: var(--c-btn-hover); color: var(--c-on-primary); }
.btn-secondary { background: var(--c-blue-soft); color: var(--c-blue-ink); }
.btn-secondary:hover { background: var(--c-surface-2); color: var(--c-blue-ink); border-color: var(--c-blue-soft); }
.btn-accent { background: var(--c-accent); color: var(--c-on-accent); }
.btn-accent:hover { background: var(--c-accent-hover); color: var(--c-on-accent); }
.btn-ghost { background: transparent; color: var(--c-text); border-color: var(--c-border-strong); }
.btn-ghost:hover { background: var(--c-surface-2); color: var(--c-text); }
.btn-light { background: var(--c-surface); color: var(--c-primary-ink); }
.btn-light:hover { background: var(--c-primary-soft); color: var(--c-primary-ink); }
.btn-danger { background: var(--c-danger); color: #fff; }
.btn-danger:hover { background: var(--c-danger-hover); color: #fff; }
.btn-sm { padding: 7px 14px; min-height: 36px; font-size: .92rem; }
.btn-lg { padding: 15px 26px; font-size: 1.08rem; }
.btn-block { width: 100%; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; }

/* Карточки: рамка вместо тени, тень только при наведении на ссылку-карточку */
.card { background: var(--c-surface); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px; border: 1px solid var(--c-border); }
.card-title { margin-top: 0; }
.grid { display: grid; gap: 18px; }
/* Элементы сетки не должны растягиваться шире экрана из-за картинок и таблиц */
.grid > *, .review > *, .stat-grid > *, .answer-grid > *, .result-hero > *, .trail-layout > *, .path-item > * { min-width: 0; }
.q-image { display: block; width: 100%; max-width: 560px; height: auto; object-fit: contain; }
.answer-box { overflow-wrap: anywhere; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.section { margin-top: 44px; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.section-head h2 { margin: 0; }
.eyebrow { font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; color: var(--c-muted); font-weight: 700; margin: 0 0 4px; }

/* Главная для гостя */
.hero { position: relative; overflow: hidden; background: var(--c-primary-soft); border-radius: 24px; padding: clamp(24px, 5vw, 56px); display: grid; grid-template-columns: 1.2fr .8fr; gap: 32px; align-items: center; }
.hero h1 { font-size: clamp(2rem, 4.6vw, 3.2rem); margin-bottom: 16px; letter-spacing: -.02em; }
.hero h1 em { font-style: normal; color: var(--c-primary-ink); }
.hero-lead { font-size: 1.12rem; color: var(--c-muted); max-width: 560px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.hero-art { width: 100%; max-width: 320px; justify-self: center; }
.hero-art .step { transform-origin: bottom; animation: rise .7s ease-out both; }
.hero-art .step:nth-child(2) { animation-delay: .12s; }
.hero-art .step:nth-child(3) { animation-delay: .24s; }
.hero-art .step:nth-child(4) { animation-delay: .36s; }
.hero-art .star { animation: bob 3s ease-in-out infinite; transform-origin: center; }
@keyframes rise { from { transform: scaleY(.2); opacity: .3; } to { transform: scaleY(1); opacity: 1; } }
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; gap: 12px; }
  .hero-art { max-width: 116px; order: -1; justify-self: start; }
  .hero-lead { font-size: 1rem; }
}

.grade-card { display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: center; color: var(--c-text); transition: border-color .15s, box-shadow .15s; }
.grade-card:hover { border-color: var(--c-border-strong); box-shadow: var(--shadow-lg); }
.grade-card .grade-link { color: var(--c-text); text-decoration: none; font-weight: 800; font-size: 1.2rem; }
.grade-card .grade-link::after { content: ""; position: absolute; inset: 0; }
.grade-card { position: relative; }
.grade-card .subj-links { position: relative; z-index: 1; display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.grade-card .subj-links a { font-size: .82rem; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: var(--c-surface-2); color: var(--c-text); text-decoration: none; }
.grade-card .subj-links a:hover { background: var(--c-primary-soft); color: var(--c-primary-ink); }
.grade-num { width: 72px; height: 72px; flex: none; border-radius: 20px; display: grid; place-items: center; font-size: 2.1rem; font-weight: 800; color: #fff; }
.grade-num.g4 { background: #12825c; }
.grade-num.g7 { background: #2f68e0; }
.subject-tile { display: flex; align-items: center; gap: 12px; padding: 16px; text-decoration: none; color: var(--c-text); }
.subject-tile:hover { color: var(--c-text); border-color: var(--c-border-strong); }
.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.steps li { counter-increment: step; background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 18px 18px 18px 66px; position: relative; }
.steps li::before { content: counter(step); position: absolute; left: 16px; top: 16px; width: 36px; height: 36px; border-radius: 11px; background: var(--c-accent); color: var(--c-on-accent); font-weight: 800; display: grid; place-items: center; }

/* Главная ученика: «Тропа» */
.trail-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.trail-head h1 { margin: 0; font-size: clamp(1.5rem, 3vw, 2rem); }
.trail-layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 24px; align-items: start; }
@media (max-width: 900px) { .trail-layout { grid-template-columns: 1fr; } }
.trail-main { display: grid; gap: 20px; }
.continue-card { background: var(--c-btn); color: var(--c-on-primary); border-radius: 22px; padding: 22px; display: grid; gap: 12px; }
.continue-card .eyebrow { color: inherit; opacity: .85; margin: 0; }
.continue-card h2 { margin: 0; font-size: clamp(1.15rem, 2.4vw, 1.4rem); }
.continue-card p { margin: 0; opacity: .9; }
.continue-card .progress { background: rgba(255, 255, 255, .28); }
.continue-card .progress > span, .continue-card .progress.mid > span, .continue-card .progress.low > span { background: var(--c-on-primary); }
.continue-card .btn { justify-self: start; }
.continue-card.done { background: var(--c-accent-soft); color: var(--c-text); }
.continue-card.done .progress { background: var(--c-surface-2); }
.subject-switch { display: flex; gap: 6px; flex-wrap: wrap; list-style: none; margin: 0; padding: 0; }
.subject-switch a { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px 7px 8px; min-height: 40px; border-radius: 999px; border: 1px solid var(--c-border); background: var(--c-surface); color: var(--c-text); text-decoration: none; font-weight: 600; font-size: .92rem; }
.subject-switch a .subj-ico.sm { margin: 0; }
.subject-switch a:hover { border-color: var(--c-border-strong); }
.subject-switch a[aria-current="page"] { background: var(--c-text); color: var(--c-bg); border-color: var(--c-text); }
.stage { border: 1px solid var(--c-border); border-radius: var(--radius); background: var(--c-surface); }
.stage + .stage { margin-top: 12px; }
.stage > summary { display: flex; align-items: center; gap: 12px; padding: 14px 18px; cursor: pointer; list-style: none; font-weight: 700; }
.stage > summary::-webkit-details-marker { display: none; }
.stage > summary::after { content: ""; width: 10px; height: 10px; border-right: 2.5px solid var(--c-muted); border-bottom: 2.5px solid var(--c-muted); transform: rotate(45deg); margin-left: auto; flex: none; transition: transform .15s; }
.stage[open] > summary::after { transform: rotate(-135deg); }
.stage-count { font-size: .82rem; font-weight: 600; color: var(--c-muted); }
.stage-mini { width: 72px; flex: none; }
.stage-mini .progress > span, .stage-mini .progress.mid > span, .stage-mini .progress.low > span { background: var(--c-primary); }
.path { list-style: none; margin: 0; padding: 0 18px 10px; }
.path-item { display: grid; grid-template-columns: 52px minmax(0, 1fr) auto; gap: 14px; align-items: center; padding: 8px 0; position: relative; }
.path-item::before { content: ""; position: absolute; left: 24.5px; top: 0; bottom: 0; width: 3px; background: var(--c-border); }
.path-item:first-child::before { top: 50%; }
.path-item:last-child::before { bottom: 50%; }
.path-item:only-child::before { display: none; }
.node { width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center; font-weight: 800; font-size: 1.05rem; position: relative; z-index: 1; background: var(--c-surface); border: 3px solid var(--c-border-strong); color: var(--c-muted); text-decoration: none; }
.node .ico { width: 24px; height: 24px; stroke-width: 2.6; }
.path-item.is-done .node { background: var(--c-btn); border-color: var(--c-btn); color: var(--c-on-primary); }
.path-item.is-weak .node { background: var(--c-accent); border-color: var(--c-accent); color: var(--c-on-accent); }
.path-item.is-now .node, .path-item.is-next .node { border-color: var(--c-blue); color: var(--c-blue-ink); box-shadow: 0 0 0 5px var(--c-blue-soft); }
.path-title { display: block; font-weight: 700; line-height: 1.3; color: var(--c-text); text-decoration: none; }
.path-title:hover { color: var(--c-primary-ink); text-decoration: underline; }
.path-meta { display: block; font-size: .84rem; color: var(--c-muted); }
.path-side { display: flex; align-items: center; gap: 8px; }
.pill { font-size: .78rem; font-weight: 700; padding: 3px 10px; border-radius: 999px; background: var(--c-surface-2); color: var(--c-muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.pill-ok { background: var(--c-primary-soft); color: var(--c-primary-ink); }
.pill-rep { background: var(--c-accent-soft); color: var(--c-accent-ink); }
.pill-now { background: var(--c-blue-soft); color: var(--c-blue-ink); }
.pill-off { background: var(--c-blue-soft); color: var(--c-blue-ink); }
@media (max-width: 520px) {
  .path { padding: 0 12px 8px; }
  .stage > summary { padding: 12px 14px; }
  .stage-mini { display: none; }
  .path-item { grid-template-columns: 44px minmax(0, 1fr); gap: 12px; }
  .path-item::before { left: 20.5px; }
  .node { width: 44px; height: 44px; border-radius: 14px; font-size: .95rem; }
  .path-side { grid-column: 2; margin-top: -4px; }
}
.trail-note { margin: 12px 0 0; }
.trail-side { display: grid; gap: 14px; }
@media (max-width: 900px) and (min-width: 521px) { .trail-side { grid-template-columns: repeat(2, 1fr); } }
.side-box { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 16px 18px; display: grid; gap: 8px; align-content: start; }
.side-box h2 { font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; color: var(--c-muted); margin: 0; font-weight: 700; }
.side-box strong { line-height: 1.3; }
.side-box a.more { font-size: .9rem; font-weight: 600; }
.medals { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0; padding: 0; }
.medal { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; background: var(--c-accent-soft); color: var(--c-accent-ink); border: 2px solid var(--c-accent); }
.medal .ico { width: 19px; height: 19px; }
.medal.off { background: var(--c-surface-2); color: var(--c-muted); border: 2px dashed var(--c-border-strong); opacity: .8; }

/* Карточка теста */
.test-card { display: flex; flex-direction: column; gap: 10px; }
.test-card .btn { margin-top: auto; }
.test-card-top { display: flex; gap: 12px; align-items: flex-start; }
.test-card-title { margin: 0; font-size: 1.08rem; }
.test-card-title a { color: var(--c-text); text-decoration: none; }
.test-card-title a:hover { color: var(--c-primary-ink); }
.subject-badge { width: 44px; height: 44px; flex: none; border-radius: 12px; display: grid; place-items: center; }
.chips { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-size: .78rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; background: var(--c-surface-2); color: var(--c-muted); }
.chip-d1 { background: var(--c-primary-soft); color: var(--c-primary-ink); }
.chip-d2 { background: var(--c-accent-soft); color: var(--c-accent-ink); }
.chip-d3 { background: var(--c-danger-soft); color: var(--c-danger-ink); }
.chip-official { background: var(--c-blue-soft); color: var(--c-blue-ink); }
.chip-example { background: var(--c-violet-soft); color: var(--c-violet-ink); }
.test-meta { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 4px 0; }
.test-meta div { background: var(--c-surface-2); border-radius: 10px; padding: 8px; text-align: center; }
.test-meta dt { font-size: .74rem; color: var(--c-muted); }
.test-meta dd { margin: 0; font-weight: 800; font-variant-numeric: tabular-nums; }
.last-result { display: grid; gap: 6px; }

/* Прогресс */
.progress { height: 10px; background: var(--c-surface-2); border-radius: 999px; overflow: hidden; }
.progress > span { display: block; height: 100%; border-radius: inherit; background: var(--c-primary); }
.progress.mid > span { background: var(--c-accent); }
.progress.low > span { background: var(--c-danger); }
.progress.lg { height: 14px; }

/* Формы */
.form-card { max-width: 440px; margin: 24px auto; }
.field { display: grid; gap: 6px; margin-bottom: 16px; }
.field label, .label { font-weight: 700; }
.hint { font-size: .85rem; color: var(--c-muted); }
input[type=text], input[type=password], input[type=number], input[type=search], input[type=url], input[type=file], select, textarea {
  font: inherit; width: 100%; padding: 11px 14px; border-radius: var(--radius-sm); border: 2px solid var(--c-border); background: var(--c-input); color: var(--c-text); min-height: 46px;
}
textarea { min-height: 110px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--c-blue); outline: none; box-shadow: var(--focus); }
.field-error input, input[aria-invalid="true"] { border-color: var(--c-danger); }
.error-text { color: var(--c-danger-ink); font-size: .9rem; }
.form-foot { margin-top: 12px; text-align: center; }
.checkbox { display: flex; gap: 10px; align-items: flex-start; }
.checkbox input { width: 20px; height: 20px; margin-top: 3px; accent-color: var(--c-btn); }

/* Сообщения */
.flash-stack { margin-bottom: 16px; display: grid; gap: 8px; }
.alert { padding: 12px 16px; border-radius: var(--radius-sm); font-weight: 600; border: 1px solid transparent; }
.alert-success { background: var(--c-primary-soft); color: var(--c-primary-ink); border-color: color-mix(in srgb, var(--c-primary) 30%, transparent); }
.alert-error { background: var(--c-danger-soft); color: var(--c-danger-ink); border-color: color-mix(in srgb, var(--c-danger) 30%, transparent); }
.alert-info { background: var(--c-blue-soft); color: var(--c-blue-ink); border-color: color-mix(in srgb, var(--c-blue) 30%, transparent); }
.alert-warn { background: var(--c-accent-soft); color: var(--c-accent-ink); border-color: color-mix(in srgb, var(--c-accent) 40%, transparent); }

/* Выбор класса */
.choice-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
.choice { position: relative; }
.choice input { position: absolute; opacity: 0; }
.choice label { display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 24px; border-radius: var(--radius); border: 3px solid var(--c-border); background: var(--c-surface); cursor: pointer; font-weight: 800; font-size: 1.1rem; transition: border-color .15s, transform .15s; }
.choice input:checked + label { border-color: var(--c-primary); background: var(--c-primary-soft); transform: translateY(-2px); }
.choice input:focus-visible + label { box-shadow: var(--focus); }

/* Кабинет */
.stat-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat { padding: 14px; }
  .stat .value { font-size: 1.5rem; }
}
.stat { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 18px; }
.stat .value { font-size: 1.9rem; font-weight: 800; line-height: 1.1; font-variant-numeric: tabular-nums; }
.stat .label { font-size: .85rem; color: var(--c-muted); font-weight: 600; }
.stat.accent { background: var(--c-accent-soft); border-color: transparent; }
.stat.green { background: var(--c-primary-soft); border-color: transparent; }
.welcome { display: flex; justify-content: space-between; gap: 16px; align-items: center; flex-wrap: wrap; margin-bottom: 20px; }
.achievements { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.ach { text-align: center; padding: 16px 10px; border-radius: var(--radius); background: var(--c-surface); border: 2px dashed var(--c-border-strong); display: grid; justify-items: center; gap: 4px; align-content: start; }
.ach .ach-icon { width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center; background: var(--c-surface-2); color: var(--c-muted); }
.ach .ach-icon .ico { width: 24px; height: 24px; }
.ach.earned { border: 2px solid var(--c-accent); background: var(--c-accent-soft); }
.ach.earned .ach-icon { background: var(--c-accent); color: var(--c-on-accent); animation: pop .5s ease-out; }
.ach .ach-title { font-weight: 800; font-size: .92rem; display: block; }
.ach .ach-desc { font-size: .78rem; color: var(--c-muted); }
@keyframes pop { 0% { transform: scale(.6); } 70% { transform: scale(1.15); } 100% { transform: scale(1); } }
.chart { width: 100%; height: auto; display: block; }
.chart .grid-line { stroke: var(--c-border); stroke-width: 1; }
.chart .line { fill: none; stroke: var(--c-primary); stroke-width: 3; stroke-linejoin: round; stroke-linecap: round; }
.chart .area { fill: var(--c-primary); fill-opacity: .12; }
.chart .dot { fill: var(--c-surface); stroke: var(--c-primary); stroke-width: 3; }
.chart text { font-size: 12px; fill: var(--c-muted); font-family: var(--font); }
.reco-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.reco-list li { display: grid; gap: 6px; }

/* Таблицы */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table { width: 100%; border-collapse: collapse; background: var(--c-surface); }
.table th, .table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--c-border); vertical-align: middle; }
.table th { font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--c-muted); background: var(--c-surface-2); }
.table tr:last-child td { border-bottom: 0; }
.table tr.me td { background: var(--c-accent-soft); font-weight: 700; }
.table .num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.place { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; font-weight: 800; background: var(--c-surface-2); }
.place-1 { background: #ffd54a; color: #3d2c00; } .place-2 { background: #dfe6ef; color: #18233a; } .place-3 { background: #f2c39a; color: #3d2400; }
.task-table { border-collapse: collapse; margin: 12px 0; background: var(--c-surface); min-width: 260px; }
.task-table th, .task-table td { border: 1px solid var(--c-border-strong); padding: 8px 12px; text-align: center; }
.task-table th { background: var(--c-surface-2); }

/* Вкладки и фильтры */
.tabs { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 12px; padding: 4px; background: var(--c-surface-2); border-radius: 14px; width: fit-content; max-width: 100%; }
.tabs a { padding: 8px 16px; border-radius: 10px; text-decoration: none; color: var(--c-muted); font-weight: 700; }
.tabs a:hover { color: var(--c-text); }
.tabs a[aria-current="page"] { background: var(--c-surface); box-shadow: var(--shadow); color: var(--c-text); }
.filters { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); align-items: end; }
.filters .field { margin: 0; }
.search-row { display: flex; gap: 8px; }
.search-row input { flex: 1; min-width: 0; }
.filter-box { margin-top: 12px; }
.filter-box > summary { cursor: pointer; font-weight: 700; padding: 8px 0; color: var(--c-blue-ink); list-style-position: inside; }
.filter-box[open] > summary { margin-bottom: 8px; }

/* Прохождение теста */
.quiz { max-width: 820px; margin: 0 auto; }
.quiz-head { display: flex; justify-content: space-between; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.quiz-head h1 { font-size: 1.4rem; margin: 0; }
.timer { font-weight: 800; font-variant-numeric: tabular-nums; background: var(--c-blue-soft); color: var(--c-blue-ink); padding: 8px 14px; border-radius: 12px; }
.timer.warn { background: var(--c-danger-soft); color: var(--c-danger-ink); animation: pulse 1s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .65; } }
.qnav { display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0; list-style: none; padding: 0; }
.qnav button { width: 40px; height: 40px; border-radius: 10px; border: 2px solid var(--c-border); background: var(--c-surface); color: var(--c-text); font: inherit; font-weight: 800; cursor: pointer; }
.qnav button.answered { background: var(--c-primary-soft); border-color: var(--c-primary); color: var(--c-primary-ink); }
.qnav button[aria-current="step"] { border-color: var(--c-blue); box-shadow: var(--focus); }
.question + .question { margin-top: 32px; }
.js .question { display: none; margin-top: 0; }
.js .question.active { display: block; animation: fadein .25s ease-out; }
html:not(.js) .qnav, html:not(.js) #btn-prev, html:not(.js) #btn-next { display: none; }
@keyframes fadein { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.q-num { color: var(--c-muted); font-weight: 700; margin-bottom: 6px; }
.q-body { font-size: 1.15rem; font-weight: 600; margin-bottom: 16px; }
.q-image { margin: 8px 0 16px; border-radius: 12px; border: 1px solid var(--c-border); background: var(--c-img-bg); max-height: 360px; }
.options { display: grid; gap: 10px; margin: 0; padding: 0; border: 0; }
.option { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border: 2px solid var(--c-border); border-radius: 12px; background: var(--c-surface); cursor: pointer; font-weight: 600; transition: border-color .12s, background .12s; }
.option:hover { border-color: var(--c-border-strong); }
.option input { width: 22px; height: 22px; flex: none; accent-color: var(--c-btn); }
.option:has(input:checked) { border-color: var(--c-primary); background: var(--c-primary-soft); }
.answer-input { max-width: 340px; font-size: 1.2rem; }
.quiz-actions { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
.save-state { font-size: .85rem; color: var(--c-muted); min-height: 1.4em; }
.save-state.error { color: var(--c-danger-ink); font-weight: 700; }
dialog { border: 0; border-radius: 18px; padding: 26px; max-width: 440px; width: calc(100% - 32px); box-shadow: var(--shadow-lg); background: var(--c-surface); color: var(--c-text); }
dialog::backdrop { background: var(--c-backdrop); }

/* Результаты */
.result-hero { display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: center; }
@media (max-width: 640px) { .result-hero { grid-template-columns: 1fr; justify-items: center; text-align: center; } }
.ring { width: 160px; height: 160px; }
.ring .bg { stroke: var(--c-surface-2); }
.ring .fg { stroke: var(--c-primary); stroke-linecap: round; transform: rotate(-90deg); transform-origin: center; transition: stroke-dashoffset 1s ease; }
.ring.mid .fg { stroke: var(--c-accent); } .ring.low .fg { stroke: var(--c-danger); }
.ring text { font-size: 26px; font-weight: 800; fill: var(--c-text); font-family: var(--font); }
.review { display: grid; gap: 14px; }
.verdict { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: .88rem; font-weight: 800; }
.verdict.ok { color: var(--c-primary-ink); background: var(--c-primary-soft); } .verdict.bad { color: var(--c-danger-ink); background: var(--c-danger-soft); } .verdict.part { color: var(--c-accent-ink); background: var(--c-accent-soft); }
.answer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px; margin: 10px 0; }
.answer-box { background: var(--c-surface-2); border-radius: 10px; padding: 10px 12px; }
.answer-box .label { display: block; font-size: .78rem; color: var(--c-muted); }
.explain { background: var(--c-blue-soft); border-radius: 10px; padding: 10px 12px; color: var(--c-blue-ink); }

/* Пустые состояния */
.empty { text-align: center; padding: 36px 16px; color: var(--c-muted); }
.empty .empty-ico { display: block; width: 44px; height: 44px; margin: 0 auto 10px; stroke-width: 1.6; color: var(--c-border-strong); }

/* Подвал */
.site-footer { background: var(--c-footer-bg); color: var(--c-footer-text); padding: 32px 0; }
.site-footer a { color: #fff; }
.site-footer .muted { color: var(--c-footer-muted); }
.footer-inner { display: grid; gap: 16px; grid-template-columns: 1.2fr 1fr; align-items: start; }
.footer-inner > p { grid-column: 1 / -1; margin: 0; }
.footer-brand { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.footer-brand p { width: 100%; margin: 4px 0 0; }
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
@media (max-width: 640px) { .footer-inner { grid-template-columns: 1fr; } }

.prose { max-width: 780px; }
.prose li { margin-bottom: 6px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
@media print {
  .site-header, .site-footer, .tabbar, .quiz-actions, .btn { display: none !important; }
}