/* AM Platform — стиль «Пещеры»: тёмный фон, синее свечение, стекло.
   Правило: ховеры БЕЗ подъёма (никаких translateY) — только свечение. */
:root {
  --blue: #388CF8;
  --blue2: #9ECBFF;
  --fire: #FF6A00;
  --bg: #04060A;
  --ink: #F4F7FB;
  --dim: #96A8BD;
  --hair: rgba(158, 203, 255, .16);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "IBM Plex Sans", -apple-system, sans-serif;
  min-height: 100vh;
  background-image:
    radial-gradient(100% 55% at 50% -6%, rgba(56,140,248,.12), transparent 62%),
    linear-gradient(rgba(120,185,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,185,255,.05) 1px, transparent 1px);
  background-size: 100% 100%, 46px 46px, 46px 46px;
}

h1, h2, h3 { font-family: "Inter Tight", sans-serif; }
a { color: var(--blue2); text-decoration: none; }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 20px; }

/* ---------- шапка ---------- */
.topbar {
  border-bottom: 1px solid var(--hair);
  backdrop-filter: blur(16px);
  position: sticky; top: 0; z-index: 50;
  background: rgba(4, 6, 10, .72);
}
.topbar .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 62px;
}
.logo {
  font-family: "JetBrains Mono", monospace;
  font-weight: 700; font-size: 15px; letter-spacing: .1em;
  color: var(--ink); text-transform: uppercase;
}
.logo span { color: var(--blue); }
.topnav { display: flex; align-items: center; gap: 18px; }
.topnav a {
  font-family: "JetBrains Mono", monospace; font-size: 12px;
  letter-spacing: .07em; text-transform: uppercase; color: var(--dim);
}
.topnav a:hover { color: var(--blue2); text-shadow: 0 0 18px rgba(56,140,248,.6); }
.avatar { width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--hair); }

/* ---------- кнопки ---------- */
.btn {
  display: inline-block;
  padding: 14px 26px;
  border-radius: 14px;
  font-family: "JetBrains Mono", monospace;
  font-size: 13px; letter-spacing: .08em; text-transform: uppercase;
  color: #fff; cursor: pointer;
  border: 1px solid rgba(120, 185, 255, .75);
  background: linear-gradient(180deg, rgba(56,140,248,.4), rgba(56,140,248,.14));
  box-shadow: 0 0 30px rgba(56,140,248,.4), inset 0 1px 0 rgba(255,255,255,.3);
  transition: box-shadow .3s;
}
.btn:hover { box-shadow: 0 0 44px rgba(56,140,248,.65), inset 0 1px 0 rgba(255,255,255,.3); }
.btn.small { padding: 9px 16px; font-size: 11px; border-radius: 10px; }
.btn.ghost {
  border: 1px solid var(--hair);
  background: transparent; box-shadow: none; color: var(--blue2);
}
.btn.ghost:hover { box-shadow: 0 0 26px rgba(56,140,248,.25); }
.btn.fire {
  border-color: rgba(255,106,0,.7);
  background: linear-gradient(180deg, rgba(255,106,0,.38), rgba(255,106,0,.12));
  box-shadow: 0 0 30px rgba(255,106,0,.35), inset 0 1px 0 rgba(255,255,255,.25);
}
.btn.fire:hover { box-shadow: 0 0 46px rgba(255,106,0,.55), inset 0 1px 0 rgba(255,255,255,.25); }
button.btn { font-family: "JetBrains Mono", monospace; }

/* ---------- карточки-«стекло» ---------- */
.glass {
  border-radius: 20px;
  border: 1px solid transparent;
  background:
    linear-gradient(155deg, rgba(20,30,45,.66), rgba(8,13,21,.72) 45%, rgba(10,15,24,.6)) padding-box,
    linear-gradient(150deg, rgba(158,203,255,.42), rgba(56,140,248,.08) 34%, rgba(120,150,190,.06) 62%, rgba(255,106,0,.22)) border-box;
  backdrop-filter: blur(16px) saturate(1.35);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 22px 55px rgba(0,0,0,.45);
  transition: box-shadow .35s ease;
}
a.glass:hover, .glass.hoverable:hover {
  box-shadow: inset 0 1px 0 rgba(255,255,255,.14), 0 26px 60px rgba(0,0,0,.5),
              0 0 44px rgba(56,140,248,.18);
}

.eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--blue2); display: flex; align-items: center; gap: 10px;
}
.eyebrow::before {
  content: ""; width: 26px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--blue), transparent);
}

.chip {
  display: inline-block; padding: 4px 10px; border-radius: 999px;
  border: 1px solid var(--hair); color: var(--dim);
  font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: .06em;
}
.chip.ok { color: #7ee0a3; border-color: rgba(126,224,163,.3); }
.chip.fire { color: var(--fire); border-color: rgba(255,106,0,.35); }

/* ---------- сетки курсов ---------- */
.page { padding: 44px 0 90px; }
.page h1 { font-size: 34px; font-weight: 900; margin: 10px 0 8px; }
.page .lead { color: var(--dim); font-size: 15px; max-width: 640px; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; margin-top: 26px; }
.card { display: block; padding: 24px; color: var(--ink); }
.card h3 { font-size: 19px; font-weight: 800; margin: 8px 0 6px; }
.card p { color: var(--dim); font-size: 13.5px; line-height: 1.5; }
.card .price {
  font-family: "JetBrains Mono", monospace; color: var(--blue2);
  font-size: 15px; margin-top: 14px;
}

/* ---------- обложки ---------- */
.cover { position: relative; aspect-ratio: 16/9; overflow: hidden; }
.cover svg { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.cover-fill { position: absolute; inset: 0; aspect-ratio: auto; }
.cover-badge {
  position: absolute; top: 12px; right: 12px; z-index: 2;
  padding: 5px 11px; border-radius: 999px;
  font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: .06em;
  color: var(--ink); background: rgba(4,6,10,.72); border: 1px solid var(--hair);
  backdrop-filter: blur(8px);
}
.cover-badge.done-badge { color: #7ee0a3; border-color: rgba(126,224,163,.4); }
.cover-badge.fire-badge { color: var(--fire); border-color: rgba(255,106,0,.4); }

/* карточка курса в кабинете */
.course-card { padding: 0; overflow: hidden; border-radius: 20px; }
.course-card .card-body { padding: 20px 22px 22px; }
.course-card h3 { margin-top: 0; }

/* сетка уроков-карточек (как «Программа» на лендинге) */
.lgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; margin-top: 14px; }
.lesson-card { display: block; padding: 0; overflow: hidden; border-radius: 20px; color: var(--ink); }
.lesson-card-body { padding: 14px 16px 16px; }
.lesson-card .lt { font-family: "Inter Tight", sans-serif; font-weight: 800; font-size: 15px; line-height: 1.35; }
.lesson-card .ldur { font-family: "JetBrains Mono", monospace; font-size: 11px; color: var(--dim); margin-top: 7px; }
.lesson-card.is-done .lt { color: var(--dim); }
.lesson-card.locked { opacity: .55; }

/* прогресс */
.progress { height: 6px; border-radius: 3px; background: rgba(158,203,255,.12); margin-top: 16px; overflow: hidden; }
.progress i {
  display: block; height: 100%; border-radius: 3px;
  background: linear-gradient(90deg, var(--blue), var(--blue2));
  box-shadow: 0 0 14px rgba(56,140,248,.8);
}
.progress-label { font-family: "JetBrains Mono", monospace; font-size: 11px; color: var(--dim); }
.progress-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 8px; }
.level-chip {
  padding: 3px 10px; border-radius: 999px; border: 1px solid;
  font-family: "JetBrains Mono", monospace; font-size: 10.5px; letter-spacing: .05em;
  text-transform: uppercase; white-space: nowrap;
}

/* ---------- страница курса ---------- */
.module { margin-top: 28px; }
.module h2 { font-size: 15px; color: var(--blue2); font-family: "JetBrains Mono", monospace; letter-spacing: .1em; text-transform: uppercase; font-weight: 700; }
.lesson-row {
  display: flex; align-items: center; gap: 14px;
  padding: 15px 18px; margin-top: 10px; color: var(--ink);
}
.lesson-row .num {
  font-family: "JetBrains Mono", monospace; font-size: 12px; color: var(--dim);
  min-width: 34px;
}
.lesson-row .t { flex: 1; font-weight: 600; font-size: 15px; }
.lesson-row .dur { font-family: "JetBrains Mono", monospace; font-size: 11px; color: var(--dim); }
.lesson-row .check { color: #7ee0a3; font-size: 15px; }
.lesson-row.locked { opacity: .55; }

/* тарифы на странице курса */
.tariffs { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-top: 22px; max-width: 720px; }
.tariff { padding: 24px; display: flex; flex-direction: column; }
.tariff h3 { font-size: 18px; font-weight: 800; }
.tariff-price { font-family: "JetBrains Mono", monospace; color: var(--blue2); font-size: 24px; margin: 8px 0 14px; }
.tariff .perks { list-style: none; margin: 0 0 18px; padding: 0; flex: 1; }
.tariff .perks li { color: var(--dim); font-size: 13.5px; line-height: 1.5; padding-left: 20px; position: relative; margin-bottom: 7px; }
.tariff .perks li::before { content: "✓"; position: absolute; left: 0; color: var(--blue); }
.tariff .btn { text-align: center; }

/* материалы курса */
.mat-list { display: grid; gap: 10px; margin-top: 14px; max-width: 720px; }
.mat { display: flex; align-items: center; gap: 14px; padding: 15px 18px; color: var(--ink); }
.mat-ico { font-size: 18px; }
.mat-title { flex: 1; font-weight: 600; font-size: 15px; }
.mat-act { font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: .06em; color: var(--blue2); text-transform: uppercase; }

/* блок допродажи */
.upsell {
  margin-top: 34px; padding: 30px;
  border-radius: 20px; border: 1px solid rgba(255,106,0,.35);
  background:
    radial-gradient(80% 120% at 15% 0%, rgba(255,106,0,.14), transparent 60%),
    linear-gradient(155deg, rgba(20,30,45,.66), rgba(8,13,21,.72));
  box-shadow: 0 0 60px rgba(255,106,0,.12), inset 0 1px 0 rgba(255,255,255,.08);
}
.upsell .eyebrow { color: var(--fire); }
.upsell .eyebrow::before { background: linear-gradient(90deg, var(--fire), transparent); }
.upsell h2 { font-size: 24px; font-weight: 900; margin: 10px 0 8px; }
.upsell p { color: var(--dim); font-size: 14.5px; max-width: 560px; line-height: 1.55; }

/* ---------- страница урока ---------- */
.lesson-layout { display: grid; grid-template-columns: 1fr 300px; gap: 22px; margin-top: 24px; }
@media (max-width: 900px) { .lesson-layout { grid-template-columns: 1fr; } }

.player-box { overflow: hidden; border-radius: 20px; }
.player-box .frame { position: relative; aspect-ratio: 16/9; background: #000; }
.player-box iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.player-box .no-video {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: var(--dim); font-family: "JetBrains Mono", monospace; font-size: 13px;
}

.side { padding: 20px; align-self: start; }
.side h3 { font-size: 13px; font-family: "JetBrains Mono", monospace; letter-spacing: .1em; text-transform: uppercase; color: var(--blue2); margin-bottom: 12px; }
.tc { display: flex; gap: 10px; padding: 8px 10px; border-radius: 10px; cursor: pointer; width: 100%; text-align: left; background: none; border: 0; color: var(--ink); font-family: "IBM Plex Sans", sans-serif; font-size: 13.5px; transition: background .2s, box-shadow .2s; }
.tc:hover { background: rgba(56,140,248,.1); box-shadow: 0 0 18px rgba(56,140,248,.15); }
.tc .time { font-family: "JetBrains Mono", monospace; color: var(--blue); font-size: 12.5px; min-width: 44px; }

.transcript { margin-top: 22px; padding: 26px; }
.transcript h3 { font-size: 13px; font-family: "JetBrains Mono", monospace; letter-spacing: .1em; text-transform: uppercase; color: var(--blue2); margin-bottom: 14px; }
.transcript .body { color: #c3cede; font-size: 14.5px; line-height: 1.7; white-space: pre-wrap; max-height: 420px; overflow-y: auto; }

.lesson-nav { display: flex; align-items: center; gap: 12px; margin-top: 22px; flex-wrap: wrap; }
.lesson-nav .spacer { flex: 1; }

/* ---------- вход ---------- */
.login-hero { min-height: calc(100vh - 62px); display: flex; align-items: center; justify-content: center; }
.login-card { padding: 46px 42px; max-width: 460px; text-align: center; }
.login-card h1 { font-size: 30px; font-weight: 900; margin: 14px 0 10px; }
.login-card p { color: var(--dim); font-size: 14.5px; line-height: 1.6; margin-bottom: 26px; }

/* ---------- админка ---------- */
.admin-table { width: 100%; border-collapse: collapse; margin-top: 20px; }
.admin-table th, .admin-table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--hair); font-size: 14px; }
.admin-table th { font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--dim); }

.form { display: grid; gap: 14px; margin-top: 20px; }
.form label { display: grid; gap: 6px; font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--dim); }
.form input[type=text], .form input[type=number], .form textarea, .form select {
  background: rgba(8,13,21,.8); border: 1px solid var(--hair); border-radius: 10px;
  color: var(--ink); padding: 11px 13px; font-size: 14px; font-family: "IBM Plex Sans", sans-serif;
}
.form textarea { min-height: 110px; resize: vertical; }
.form textarea.tall { min-height: 220px; }
.form input:focus, .form textarea:focus, .form select:focus {
  outline: none; border-color: rgba(120,185,255,.6); box-shadow: 0 0 18px rgba(56,140,248,.2);
}
.form .row { display: flex; gap: 14px; }
.form .row label { flex: 1; }
.inline-form { display: flex; gap: 10px; margin-top: 14px; }
.inline-form input { flex: 1; background: rgba(8,13,21,.8); border: 1px solid var(--hair); border-radius: 10px; color: var(--ink); padding: 10px 13px; font-size: 14px; }

.muted { color: var(--dim); font-size: 13px; }
.mt { margin-top: 22px; }
.mb { margin-bottom: 16px; }