/* Страница «Все предметы» /predmety/ (templates/public/subjects_index.html).
   Макеты — _lab/24-pages/subjects-index: 01-hero v2, 02-live v3, 03-soon v1, 04-cta v2.
   Все классы с префиксом si-. */

.si-hero, .si-block { --si-shadow: 0 30px 60px -30px rgba(25, 30, 80, .28), 0 2px 6px rgba(25, 30, 80, .05);
  --si-shadow-s: 0 16px 34px -20px rgba(25, 30, 80, .3), 0 1px 3px rgba(25, 30, 80, .05); }
.si-hero ul, .si-block ul { list-style: none; margin: 0; padding: 0; }
.si-hero li, .si-block li { margin: 0; }
.si-hero a, .si-block a { text-decoration: none; }

/* ── 1. Первый экран: мозаика и стеклянная карточка ── */
.si-hero {
  position: relative; isolation: isolate; overflow: clip;
  margin: 0 calc(50% - 50vw); padding: 4px 0 clamp(56px, 7vw, 96px);
}
.si-mos {
  position: absolute; inset: -140px -120px; z-index: -2;
  display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 18px;
  transform: rotate(-9deg); opacity: .5;
}
.si-mos img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 16px; }
.si-hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(60% 70% at 50% 50%, rgba(246, 247, 251, .92) 0%, rgba(246, 247, 251, .55) 60%, rgba(246, 247, 251, .25) 100%),
    linear-gradient(180deg, rgba(246, 247, 251, 0) 70%, var(--page) 100%);
}
.si-hero-in { max-width: 1360px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 48px); }
.si-hero .crumbs ol { margin: 18px 0 40px; }
.si-hero .crumbs a { color: var(--ink-2); font-weight: 600; }
.si-glass {
  display: grid; justify-items: center; gap: 18px; max-width: 860px; margin: 0 auto;
  padding: 48px 56px 44px; border-radius: 34px; text-align: center;
  background: rgba(255, 255, 255, .72);
  -webkit-backdrop-filter: blur(18px) saturate(1.3); backdrop-filter: blur(18px) saturate(1.3);
  box-shadow: var(--si-shadow), inset 0 0 0 1px rgba(255, 255, 255, .8);
}
.si-glass .kicker { margin: 0; }
.si-glass h1 { margin: 0; font-size: clamp(40px, 6vw, 64px); line-height: 1.02; letter-spacing: -.04em; }
.si-lead { max-width: 640px; margin: 0; font-size: 18px; line-height: 1.55; color: var(--muted); }
.si-glass .si-pills { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 8px; }
.si-pills a {
  display: inline-flex; align-items: center; gap: 10px; height: 52px; padding: 0 18px 0 8px;
  border-radius: var(--pill); background: var(--surface); box-shadow: var(--si-shadow-s);
  font-size: 15px; font-weight: 700; color: var(--ink); transition: transform .15s;
}
.si-pills a:hover { color: var(--ink); transform: translateY(-2px); }
.si-pills img { width: 38px; height: 38px; object-fit: contain; }
.si-pills small { font-size: 13px; font-weight: 600; color: var(--d); }
.si-sum { margin: 0; font-size: 14px; color: var(--muted); }
.si-sum b { color: var(--ink); }

@media (min-width: 900px) {
  /* шапка-пилюля над мозаикой (body.is-glass), как на главной */
  .is-glass .si-hero { margin-top: -84px; padding-top: 84px; }
}

/* ── общее для блоков ниже ── */
.si-block { margin-top: clamp(56px, 7vw, 96px); }
.si-hd { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 14px 32px; align-items: end; margin-bottom: 32px; }
.si-hd > div:first-child { display: grid; gap: 12px; }
.si-hd .kicker { margin: 0; }
.si-hd h2 { margin: 0; font-size: clamp(30px, 4vw, 44px); line-height: 1.06; letter-spacing: -.035em; }
.si-sub { max-width: 660px; margin: 0; font-size: 18px; line-height: 1.55; color: var(--muted); }

/* ── 2. Что есть для вашего класса ── */
.si-tabs { display: inline-flex; flex-wrap: wrap; gap: 4px; padding: 5px; border-radius: var(--pill); background: var(--surface); box-shadow: var(--si-shadow-s); }
.si-tabs[hidden] { display: none; }
.si-tabs button {
  height: 44px; padding: 0 20px; border: 0; border-radius: var(--pill); background: none; cursor: pointer;
  font: 700 15px var(--font); color: var(--ink-2);
}
.si-tabs button:hover { color: var(--ink); background: var(--surface-2); }
.si-tabs button[aria-pressed="true"] { color: #fff; background: var(--ink); }
.si-list { display: grid; gap: 18px; }
.si-it {
  display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 24px; align-items: center;
  padding: 20px; border-radius: 28px; background: var(--surface); box-shadow: var(--si-shadow);
}
.si-it[hidden], .si-it [hidden] { display: none !important; }
.si-who { display: grid; gap: 10px; padding: 8px 4px 8px 8px; }
.si-name { display: flex; align-items: center; gap: 14px; }
.si-name img { flex: none; width: 54px; height: 54px; object-fit: contain; }
.si-name h3 { margin: 0; font-size: 22px; line-height: 1.15; letter-spacing: -.02em; }
.si-name h3 a { color: var(--ink); }
.si-name h3 a:hover { color: var(--d); }
.si-name small { display: block; margin-top: 3px; font-size: 13px; font-weight: 700; color: var(--d); }
.si-who > p { margin: 0; font-size: 14px; color: var(--muted); }
.si-who > p b { color: var(--ink); }
.si-cls { display: flex; flex-wrap: wrap; gap: 6px; }
.si-cls a {
  display: inline-flex; align-items: baseline; gap: 5px; padding: 7px 12px; border-radius: var(--pill);
  font-size: 13px; font-weight: 700; line-height: 1.2; color: var(--ink);
  background: rgba(255, 255, 255, .8); box-shadow: inset 0 0 0 1px rgba(21, 23, 46, .08);
}
.si-cls a small { font-size: 12px; font-weight: 600; color: var(--muted); }
.si-cls a:hover { color: var(--d); background: var(--surface); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--d) 40%, transparent); }
.si-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.si-ch { display: grid; gap: 8px; align-content: start; color: var(--ink); }
.si-art {
  position: relative; display: block; overflow: hidden; aspect-ratio: 16 / 9; border-radius: 16px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--a) 22%, #fff), color-mix(in srgb, var(--b) 22%, #fff));
}
.si-art img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .25s; }
.si-art.is-icon img { width: 46%; height: auto; margin: 9% auto 0; object-fit: contain; }
.si-art.is-set img { width: 70%; margin: 0 auto; object-fit: contain; }
.si-ch:hover .si-art img { transform: scale(1.04); }
.si-art i {
  position: absolute; left: 8px; top: 8px; padding: 3px 8px; border-radius: var(--pill);
  font-style: normal; font-size: 11px; font-weight: 800; line-height: 1.4; color: var(--d); background: rgba(255, 255, 255, .9);
}
.si-ch b { font-size: 14px; line-height: 1.3; font-weight: 700; }
.si-ch:hover b { color: var(--d); }

/* ── 3. Готовятся: колонки групп, как в меню ── */
.si-leg { display: flex; flex-wrap: wrap; gap: 16px; font-size: 14px; color: var(--muted); }
.si-leg li { display: inline-flex; align-items: center; gap: 8px; }
.si-leg i { width: 14px; height: 14px; border-radius: 5px; background: #e3e5ef; }
.si-leg i.is-live { background: #4d97ff; }
.si-groups { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; align-items: start; }
.si-grp { padding: 24px 22px 18px; border-radius: 28px; background: var(--surface); box-shadow: var(--si-shadow); }
.si-grp h3 {
  display: flex; justify-content: space-between; align-items: baseline; gap: 10px; margin: 0 0 12px;
  font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--muted);
}
.si-grp h3 small { font-size: 12px; font-weight: 600; letter-spacing: 0; text-transform: none; white-space: nowrap; }
.si-grp li + li { margin-top: 2px; }
.si-row { display: grid; grid-template-columns: 40px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 8px; border-radius: 16px; color: var(--ink); }
.si-row img, .si-dot { width: 40px; height: 40px; object-fit: contain; }
.si-dot {
  display: grid; place-items: center; border-radius: 30%; font-style: normal; font-size: 16px; font-weight: 800; color: #fff;
  background: linear-gradient(135deg, var(--c), color-mix(in srgb, var(--c) 55%, #fff));
}
.si-row b { display: block; font-size: 15px; line-height: 1.25; font-weight: 700; }
.si-row small { display: block; font-size: 12px; line-height: 1.4; color: var(--muted); }
.si-row em { padding: 4px 9px; border-radius: var(--pill); font-style: normal; font-size: 12px; font-weight: 700; line-height: 1.3; white-space: nowrap; }
a.si-row { background: linear-gradient(135deg, color-mix(in srgb, var(--c) 12%, #fff), #fff); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--c) 25%, #fff); }
a.si-row em { color: #fff; background: var(--c); }
a.si-row:hover { color: var(--ink); }
a.si-row:hover b { color: var(--c); }
.si-row.is-soon img { filter: grayscale(.85); opacity: .55; }
.si-row.is-soon .si-dot { filter: grayscale(.8); opacity: .45; }
.si-row.is-soon b { color: var(--ink-2); font-weight: 600; }
.si-row.is-soon em { color: var(--muted); background: var(--surface-2); }

/* ── 4. Призыв: почта и веер обложек ── */
.si-cta-box {
  position: relative; overflow: hidden; display: grid; grid-template-columns: minmax(0, 1fr) 470px; gap: 30px; align-items: center;
  padding: 54px 56px; border-radius: 28px; background: var(--surface); box-shadow: var(--si-shadow);
}
.si-cta-txt { display: grid; gap: 18px; }
.si-cta-txt .kicker { margin: 0; }
.si-cta-txt h2 { margin: 0; font-size: clamp(28px, 3.4vw, 38px); line-height: 1.08; letter-spacing: -.03em; }
.si-cta-txt p { margin: 0; font-size: 18px; line-height: 1.5; color: var(--muted); }
.si-cta-txt .signup { margin-top: 6px; }
.si-fan { position: relative; height: 330px; }
.si-fan img {
  position: absolute; width: 300px; aspect-ratio: 16 / 9; object-fit: cover; border: 5px solid #fff; border-radius: 20px;
  box-shadow: 0 30px 50px -24px rgba(25, 30, 80, .45);
}
.si-f1 { left: 0; top: 40px; transform: rotate(-9deg); }
.si-f2 { left: 150px; top: 0; transform: rotate(5deg); }
.si-f3 { left: 60px; top: 160px; transform: rotate(-2deg); z-index: 2; }
.si-tag {
  position: absolute; z-index: 3; right: 14px; bottom: 26px; display: flex; align-items: center; gap: 10px;
  padding: 10px 16px 10px 10px; border-radius: var(--pill); background: var(--surface); box-shadow: var(--si-shadow);
  font-size: 14px; font-weight: 700; white-space: nowrap;
}
.si-tag i {
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; font-style: normal; color: #fff;
  background: linear-gradient(95deg, #1f7bff 0%, #17bfe0 55%, #2ee59d 100%);
}

@media (max-width: 1100px) {
  .si-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .si-it { grid-template-columns: 260px minmax(0, 1fr); }
  .si-cta-box { grid-template-columns: minmax(0, 1fr) 380px; padding: 44px 40px; }
  .si-fan img { width: 240px; }
  .si-f2 { left: 120px; }
  .si-f3 { left: 40px; top: 140px; }
}
@media (max-width: 860px) {
  .si-it { grid-template-columns: 1fr; gap: 12px; padding: 16px; }
  .si-who { padding: 4px; }
  .si-strip { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .si-mos { grid-template-columns: repeat(4, minmax(0, 1fr)); inset: -60px -160px; }
  .si-hero .crumbs ol { margin-bottom: 22px; }
  .si-glass { padding: 30px 18px 26px; border-radius: 28px; }
  .si-lead, .si-sub { font-size: 16px; }
  .si-pills a { height: 46px; font-size: 14px; }
  .si-pills img { width: 32px; height: 32px; }
  .si-hd { grid-template-columns: 1fr; }
  .si-tabs { display: flex; }
  .si-tabs button { flex: 1; padding: 0 8px; font-size: 14px; }
  .si-groups { grid-template-columns: 1fr; gap: 14px; }
  .si-cta-box { grid-template-columns: 1fr; gap: 10px; padding: 30px 18px 22px; }
  .si-cta-txt p { font-size: 16px; }
  .si-fan { height: 240px; }
  .si-fan img { width: 200px; border-width: 4px; border-radius: 16px; }
  .si-f1 { left: 0; top: 30px; }
  .si-f2 { left: auto; right: 0; top: 0; }
  .si-f3 { left: 50px; top: 110px; }
  .si-tag { right: 0; bottom: 0; font-size: 13px; }
}
@media (max-width: 380px) {
  .si-fan img { width: 170px; }
  .si-f3 { left: 30px; }
}
@media (prefers-reduced-motion: no-preference) {
  .si-mos { animation: si-drift 60s linear infinite alternate; }
  @keyframes si-drift { to { transform: rotate(-9deg) translateY(-60px); } }
}