/* learn.css — раздел «Обучение»: витрина курса, блоки, уроки.
   Наследует переменные и типографику из style.css. */

.learn main,
main.learn {
  max-width: 820px;
}

/* --- ШАПКА КУРСА --- */

.course-hero {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 28px;
  margin-bottom: 8px;
}

.course-kicker {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
}

.course-hero h1 {
  margin: 0 0 10px;
  font-size: 2.5rem;
}

.course-hero .course-sub {
  color: var(--fg-soft);
  font-size: 1.05rem;
  margin: 0 0 22px;
  max-width: 40em;
}

/* --- ПРОГРЕСС --- */

.progress-box {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 18px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 20px;
  align-items: center;
  justify-content: space-between;
}

.progress-meta {
  font-size: 0.92rem;
  color: var(--muted);
  margin: 0;
}

.progress-meta strong {
  color: var(--fg);
  font-weight: 600;
}

.progress-bar {
  flex: 1 1 100%;
  height: 8px;
  background: var(--rule-soft);
  border-radius: 99px;
  overflow: hidden;
}

.progress-bar > span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent-insight);
  border-radius: 99px;
  transition: width 0.4s ease;
}

.btn {
  display: inline-block;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 8px;
  border: 1px solid var(--fg);
  background: var(--fg);
  color: var(--bg);
  text-decoration: none;
  cursor: pointer;
  transition: opacity 0.15s, background 0.15s, color 0.15s;
}

.btn:hover { opacity: 0.85; color: var(--bg); text-decoration: none; }

.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--rule);
}

.btn-ghost:hover { color: var(--fg); border-color: var(--fg); opacity: 1; }

.btn-small { font-size: 0.85rem; padding: 7px 13px; }

.btn[disabled], .btn.is-disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* --- ЧАСТИ И БЛОКИ --- */

.part-head {
  margin: 54px 0 6px;
  padding-top: 10px;
}

.part-head h2 {
  margin: 0 0 4px;
  font-size: 1.5rem;
}

.part-head p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.block-list {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  display: grid;
  gap: 14px;
}

.block-card {
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: var(--bg-card);
  padding: 18px 20px;
  display: grid;
  grid-template-columns: 46px 1fr auto;
  gap: 4px 16px;
  align-items: start;
  transition: border-color 0.15s, transform 0.15s;
}

.block-card:hover { border-color: var(--muted); }

.block-card.is-locked { opacity: 0.55; }

.block-num {
  grid-row: 1 / span 3;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--muted);
  line-height: 1.4;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.block-title {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.3;
}

.block-title a { text-decoration: none; }
.block-title a:hover { text-decoration: underline; }

.block-goal {
  grid-column: 2;
  margin: 6px 0 0;
  color: var(--fg-soft);
  font-size: 0.95rem;
}

.block-meta {
  grid-column: 2;
  margin: 10px 0 0;
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}

.block-status {
  grid-column: 3;
  grid-row: 1;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
  padding: 4px 10px;
  border-radius: 99px;
  border: 1px solid var(--rule);
  color: var(--muted);
}

.block-status.done { color: var(--accent-insight); border-color: var(--accent-insight); }
.block-status.active { color: var(--accent-cta); border-color: var(--accent-cta); }

.mini-bar {
  width: 120px;
  height: 5px;
  background: var(--rule-soft);
  border-radius: 99px;
  overflow: hidden;
}

.mini-bar > span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent-insight);
  transition: width 0.3s ease;
}

/* --- СПИСОК УРОКОВ (страница блока) --- */

.lesson-list {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
  border-top: 1px solid var(--rule-soft);
}

.lesson-row {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  gap: 4px 14px;
  align-items: center;
  padding: 14px 6px;
  border-bottom: 1px solid var(--rule-soft);
}

.lesson-row.is-locked { opacity: 0.5; }

.lesson-mark {
  font-size: 0.95rem;
  color: var(--muted);
  text-align: center;
}

.lesson-row.is-done .lesson-mark { color: var(--accent-insight); }

.lesson-name { margin: 0; font-size: 1rem; line-height: 1.4; }
.lesson-name a { text-decoration: none; }
.lesson-name a:hover { text-decoration: underline; }

.lesson-time {
  font-size: 0.82rem;
  color: var(--muted);
  white-space: nowrap;
}

/* --- СТРАНИЦА УРОКА --- */

.crumbs {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 18px;
}

.crumbs a { color: var(--muted); text-decoration-color: var(--rule-soft); }

.lesson-head {
  border-bottom: 1px solid var(--rule-soft);
  padding-bottom: 16px;
  margin-bottom: 8px;
}

.lesson-head h1 { margin-top: 0.2rem; }

.lesson-position {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
}

/* Замок */

.lock-screen {
  display: none;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: var(--bg-card);
  padding: 30px 26px;
  text-align: center;
  margin: 30px 0;
}

.lock-screen h2 { margin-top: 0; font-size: 1.3rem; }
.lock-screen p { color: var(--fg-soft); max-width: 34em; margin-left: auto; margin-right: auto; }

.is-locked-view .lesson-body { display: none; }
.is-locked-view .lesson-foot { display: none; }
.is-locked-view .lock-screen { display: block; }

/* Подвал урока: отметка о прохождении и навигация */

.lesson-foot {
  margin-top: 46px;
  border-top: 1px solid var(--rule);
  padding-top: 26px;
}

.done-box {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
}

.done-box p { margin: 0 0 14px; color: var(--fg-soft); font-size: 0.98rem; }

.done-box.is-done { border-color: var(--accent-insight); }

.lesson-nav {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-top: 22px;
  font-size: 0.92rem;
}

.lesson-nav a { color: var(--muted); }
.lesson-nav .next { text-align: right; margin-left: auto; }

/* Практика в уроке */

.task {
  border-left: 3px solid var(--accent-cta);
  background: var(--bg-card);
  padding: 14px 18px;
  border-radius: 0 8px 8px 0;
  margin: 26px 0;
}

.task > p:first-child { margin-top: 0; }
.task > p:last-child { margin-bottom: 0; }

@media (max-width: 620px) {
  .block-card { grid-template-columns: 34px 1fr; }
  .block-status { grid-column: 2; grid-row: auto; justify-self: start; margin-top: 8px; }
  .block-num { font-size: 1.2rem; }
  .lesson-row { grid-template-columns: 24px 1fr; }
  .lesson-time { grid-column: 2; }
}