/* ==========================================================================
   Страницы курсов. Подключается после ../../styles.css и использует его
   переменные и классы (.section, .label, .h2, .btn, .cta, .final).
   Устройство: docs/guides/courses.md
   ========================================================================== */

/* ---------- Шапка курса ---------- */

.course-header__actions {
  display: flex;
  align-items: center;
  gap: 20px;
}
.course-header__link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
  text-decoration: none;
}
.course-header__link:hover { color: var(--ink); }

@media (max-width: 420px) {
  .course-header__link { display: none; }
}

/* ---------- Плашка черновика ---------- */

.course-draft {
  padding: 10px 0;
  background: var(--butter-soft);
  font-size: 0.9rem;
  font-weight: 600;
  text-align: center;
}

/* ---------- Первый экран курса ---------- */

.course-hero {
  padding: clamp(40px, 7vw, 96px) 0 clamp(56px, 7vw, 96px);
}
.course-hero__title {
  max-width: 16em;
  margin-bottom: clamp(18px, 2vw, 26px);
  font-size: clamp(2.3rem, 1.4rem + 3.4vw, 4.2rem);
  line-height: 1.04;
}
.course-hero__lead {
  max-width: 36em;
  margin-bottom: 28px;
  font-size: clamp(1.05rem, 0.98rem + 0.35vw, 1.25rem);
  color: var(--ink-soft);
}

.course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(28px, 4vw, 40px);
}
.course-meta li {
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--paper);
  box-shadow: 0 0 0 1px var(--line);
  font-size: 0.92rem;
  font-weight: 600;
}

.course-hero .cta { display: grid; width: fit-content; }

/* ---------- Для кого / что изменится ---------- */

.course-for__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.course-list {
  padding: clamp(24px, 4vw, 40px);
  border-radius: var(--radius-lg);
  background: var(--paper);
  box-shadow: var(--shadow-soft);
}
.course-list__title {
  margin-bottom: 18px;
  font-size: clamp(1.6rem, 1.3rem + 1vw, 2.2rem);
}
.course-list ul { display: grid; gap: 12px; }
.course-list li {
  position: relative;
  padding-left: 26px;
  color: var(--ink-soft);
}
.course-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.6em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--sage);
}
.course-list:last-child li::before { background: var(--butter); }

/* ---------- Программа ---------- */

.course-modules { display: grid; gap: 14px; }
.course-module details {
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: 0 0 0 1px var(--line);
}
.course-module summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  padding: 22px clamp(18px, 3vw, 28px);
  cursor: pointer;
  list-style: none;
}
.course-module summary::-webkit-details-marker { display: none; }
.course-module__num {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 500;
  line-height: 1;
  color: var(--sage-deep);
}
.course-module__title {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 1.2rem + 0.5vw, 1.65rem);
  font-weight: 500;
  line-height: 1.2;
}
.course-module__count {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-mute);
  white-space: nowrap;
}
.course-module__desc {
  margin: 0;
  padding: 0 clamp(18px, 3vw, 28px) 12px;
  color: var(--ink-soft);
}

.course-lessons {
  margin: 0 clamp(18px, 3vw, 28px);
  padding-bottom: 8px;
  border-top: 1px solid var(--line);
  counter-reset: lesson;
}
.course-lesson {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  counter-increment: lesson;
}
.course-lesson:last-child { border-bottom: 0; }
.course-lesson__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}
.course-lesson__title { font-weight: 600; }
.course-lesson__title::before {
  content: counter(lesson) ". ";
  color: var(--sage-deep);
}
.course-lesson__duration {
  flex: none;
  font-size: 0.85rem;
  color: var(--ink-mute);
}
.course-lesson__summary {
  margin: 4px 0 0;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

/* ---------- Автор ---------- */

.course-author__inner {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  align-items: center;
  gap: clamp(28px, 5vw, 64px);
}
.course-author__photo {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: 50% 20%;
  border-radius: 50% 50% 24px 24px / 40% 40% 24px 24px;
}
.course-author .h2 { margin-bottom: 12px; }
.course-author .lead { margin-bottom: 20px; color: var(--ink-soft); }
.course-author .link-arrow { color: var(--sage-deep); }

/* ---------- Вопросы ---------- */

.course-faq__list {
  max-width: 820px;
  border-top: 1px solid var(--line);
}
.course-faq__item { border-bottom: 1px solid var(--line); }
.course-faq__item summary {
  position: relative;
  padding: 22px 48px 22px 0;
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  font-weight: 500;
  line-height: 1.25;
  cursor: pointer;
  list-style: none;
}
.course-faq__item summary::-webkit-details-marker { display: none; }
.course-faq__item summary::before,
.course-faq__item summary::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 50%;
  width: 16px;
  height: 1.6px;
  background: var(--ink);
  transition: transform 0.35s var(--ease);
}
.course-faq__item summary::after { transform: rotate(90deg); }
.course-faq__item[open] summary::after { transform: rotate(0deg); }
.course-faq__item p {
  padding: 0 48px 22px 0;
  color: var(--ink-soft);
}

/* ---------- Каталог ---------- */

.catalog-hero { padding: clamp(40px, 7vw, 96px) 0 clamp(32px, 4vw, 56px); }
.catalog-hero .lead { max-width: 36em; margin-top: 18px; color: var(--ink-soft); }

.catalog-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: 20px;
}
.course-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
  padding: clamp(24px, 3vw, 32px);
  border-radius: var(--radius-lg);
  background: var(--paper);
  box-shadow: var(--shadow-soft);
  text-decoration: none;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.course-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); }
.course-card__badge {
  align-self: flex-start;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--butter-soft);
  font-size: 0.78rem;
  font-weight: 700;
}
.course-card__title { font-size: clamp(1.6rem, 1.4rem + 0.6vw, 2rem); }
.course-card__subtitle { margin: 0; color: var(--ink-soft); }
.course-card__meta { margin: 0; font-size: 0.88rem; font-weight: 600; color: var(--sage-deep); }
.course-card .link-arrow { align-self: flex-start; margin-top: auto; }

.catalog-empty {
  max-width: 640px;
  padding: clamp(28px, 4vw, 48px);
  border: 1.5px dashed rgba(93, 108, 85, 0.45);
  border-radius: var(--radius-lg);
}
.catalog-empty .h2 { margin-bottom: 12px; font-size: clamp(1.7rem, 1.4rem + 1vw, 2.3rem); }
.catalog-empty p { color: var(--ink-soft); margin-bottom: 24px; }

/* ---------- Подвал курсов ---------- */

.course-footer { padding: 0 0 28px; }
.course-footer .footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  border-top: 0;
}

/* ---------- Телефоны ---------- */

@media (max-width: 760px) {
  .course-for__grid { grid-template-columns: minmax(0, 1fr); }
  .course-author__inner { grid-template-columns: minmax(0, 1fr); }
  .course-author__photo { max-width: 200px; }
}
@media (max-width: 480px) {
  .course-hero .cta { width: 100%; }
  .course-module summary { grid-template-columns: auto minmax(0, 1fr); gap: 4px 14px; }
  .course-module__count { grid-column: 2; }
  .course-lesson__head { flex-direction: column; gap: 2px; }
}