/* ════════════════════════════════════════════════════════════════════
   ОНЛАЙН-ОБУЧЕНИЕ — стили страницы курсов
   ════════════════════════════════════════════════════════════════════ */

/* ─── HERO ───────────────────────────────────────── */
.obu-hero {
  padding: 140px 40px 80px;
  background:
    radial-gradient(ellipse at 70% 20%, var(--rose-soft) 0%, transparent 50%),
    var(--paper);
  position: relative;
  overflow: hidden;
}
.obu-hero-inner {
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
}
.obu-h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(40px, 6vw, 84px);
  line-height: 1.02;
  letter-spacing: -.015em;
  color: var(--ink);
  margin: 28px 0 24px;
}
.obu-h1 em {
  font-style: italic;
  color: var(--gold);
  font-weight: 400;
}
.obu-lede {
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin-bottom: 36px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.obu-cta-row {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── ПРЕИМУЩЕСТВА ─────────────────────────────────── */
.obu-benefits {
  padding: 80px 40px;
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.obu-benefits-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.obu-benefit {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.obu-bnum {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  color: var(--gold);
  margin-bottom: 6px;
}
.obu-benefit h3 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--ink);
}
.obu-benefit p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ─── ШАПКА СЕКЦИИ ─────────────────────────────────── */
.obu-section-head {
  max-width: 800px;
  margin: 0 auto 48px;
  text-align: center;
}
.obu-section-head .head-meta {
  justify-content: center;
}
.obu-h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(36px, 4.5vw, 64px);
  line-height: 1.05;
  letter-spacing: -.015em;
  color: var(--ink);
  margin-top: 14px;
}
.obu-h2 em {
  font-style: italic;
  color: var(--gold);
  font-weight: 400;
}

/* ─── КУРСЫ ────────────────────────────────────────── */
.obu-courses {
  padding: 90px 40px;
  background: var(--paper-2);
}
.obu-courses-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.obu-loading {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--ink-soft);
  padding: 60px 0;
}
.obu-course-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color .3s, transform .3s, box-shadow .3s;
}
.obu-course-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 24px 48px rgba(184,147,90,.15);
}
.obu-course-img {
  aspect-ratio: 16/10;
  background: var(--paper-2);
  overflow: hidden;
}
.obu-course-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease);
}
.obu-course-card:hover .obu-course-img img { transform: scale(1.04); }
.obu-course-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 14px;
}
.obu-course-title {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 500;
  line-height: 1.2;
  color: var(--ink);
}
.obu-course-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
  flex: 1;
}
.obu-course-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--ash);
  letter-spacing: .04em;
  text-transform: uppercase;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.obu-course-price {
  margin-left: auto;
  color: var(--gold);
  font-weight: 600;
  font-size: 14px;
  text-transform: none;
  letter-spacing: 0;
}
.obu-course-cta {
  display: block;
  margin-top: 14px;
  background: var(--ink);
  color: var(--paper);
  text-align: center;
  padding: 14px 24px;
  font-size: 13px;
  letter-spacing: .1em;
  text-transform: uppercase;
  border-radius: 4px;
  transition: background .2s;
}
.obu-course-cta:hover { background: var(--gold); color: var(--paper); }

/* ─── ЛИЧНЫЙ КАБИНЕТ / ВХОД ───────────────────────── */
.obu-account {
  padding: 90px 40px;
  background: var(--paper);
}
.obu-account-inner {
  max-width: 560px;
  margin: 0 auto;
}
.obu-login-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.obu-field { display: flex; flex-direction: column; gap: 6px; }
.obu-field label {
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.obu-field input {
  padding: 12px 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
  font-family: var(--sans);
  color: var(--ink);
  outline: none;
  transition: border-color .2s;
}
.obu-field input:focus { border-color: var(--gold); }
.obu-login-btn { align-self: flex-start; margin-top: 12px; }
.obu-login-hint {
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-soft);
  margin-top: 8px;
}
.obu-login-hint a { color: var(--gold); text-decoration: underline; }
.obu-login-error {
  padding: 12px 16px;
  border-radius: 4px;
  background: rgba(220,53,69,.08);
  color: #C0392B;
  font-size: 14px;
  margin-top: 14px;
}

/* ─── ПОСЛЕ ВХОДА — список моих курсов ──────────── */
.my-courses-list { display: flex; flex-direction: column; gap: 16px; margin-bottom: 28px; }
.my-course-row {
  display: grid;
  grid-template-columns: 92px 1fr auto;
  gap: 18px;
  align-items: center;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px;
  transition: border-color .25s, transform .25s;
}
.my-course-row:hover { border-color: var(--gold); transform: translateY(-2px); }
.my-course-row .mc-img {
  width: 92px; height: 70px;
  background: var(--paper);
  border-radius: 4px;
  overflow: hidden;
}
.my-course-row .mc-img img { width: 100%; height: 100%; object-fit: cover; }
.my-course-row .mc-info { display: flex; flex-direction: column; gap: 4px; }
.my-course-row .mc-title { font-size: 16px; font-weight: 500; color: var(--ink); }
.my-course-row .mc-meta { font-size: 12px; color: var(--ink-soft); }
.my-course-row .mc-meta.expired { color: #C0392B; }
.my-course-row .mc-open {
  background: var(--gold);
  color: var(--paper);
  padding: 10px 18px;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  border-radius: 3px;
}
.my-course-row .mc-open:hover { background: var(--ink); }
.my-course-row .mc-locked {
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #C0392B;
  padding: 10px 18px;
  border: 1px solid #C0392B;
  border-radius: 3px;
}
.obu-logout-btn { margin-top: 20px; }

/* ─── FAQ ──────────────────────────────────────────── */
.obu-faq {
  padding: 90px 40px;
  background: var(--paper-2);
}
.obu-faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.obu-faq-item {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px;
  margin-bottom: 10px;
  padding: 0;
  overflow: hidden;
  transition: border-color .2s;
}
.obu-faq-item[open] { border-color: var(--gold); }
.obu-faq-item summary {
  padding: 18px 22px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  list-style: none;
  position: relative;
  user-select: none;
}
.obu-faq-item summary::-webkit-details-marker { display: none; }
.obu-faq-item summary::after {
  content: '+';
  position: absolute;
  right: 22px;
  top: 18px;
  font-size: 22px;
  color: var(--gold);
  transition: transform .25s;
}
.obu-faq-item[open] summary::after { content: '−'; }
.obu-faq-item p {
  padding: 0 22px 20px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink-soft);
}

/* ─── ПОП-АП ВИДЕОПЛЕЕР УРОКА ──────────────────── */
.lesson-player {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: none;
}
.lesson-player[hidden] { display: none; }
.lesson-player:not([hidden]) { display: block; }
.lesson-player-overlay {
  position: absolute;
  inset: 0;
  background: rgba(26,24,21,.85);
  backdrop-filter: blur(8px);
}
.lesson-player-box {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  width: min(1200px, 92vw);
  max-height: 92vh;
  background: var(--paper);
  border-radius: 8px;
  overflow-y: auto;
  overflow-x: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,.5);
}
.lesson-player-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(26,24,21,.85);
  color: var(--paper);
  font-size: 24px;
  border: none;
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s;
}
.lesson-player-close:hover { background: var(--gold); }
.lesson-player-content { padding: 28px 36px 36px; }
.lp-course-title {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 20px;
  padding-right: 50px;
}
.lp-lessons-list { display: flex; flex-direction: column; gap: 28px; }
.lp-lesson {
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--paper-2);
}
.lp-lesson-title {
  padding: 14px 20px;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.lp-lesson-video {
  background: #000;
  position: relative;
}
.lp-lesson-video video,
.lp-lesson-video iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  border: none;
}
.lp-lesson-desc {
  padding: 16px 20px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ─── RESPONSIVE ──────────────────────────────────── */
@media (max-width: 1180px) {
  .obu-benefits-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
}
@media (max-width: 640px) {
  .obu-hero { padding: 100px 20px 60px; }
  .obu-benefits { padding: 60px 20px; }
  .obu-benefits-grid { grid-template-columns: 1fr; gap: 24px; }
  .obu-courses, .obu-account, .obu-faq { padding: 60px 20px; }
  .obu-courses-grid { grid-template-columns: 1fr; }
  .obu-cta-row { flex-direction: column; align-items: stretch; }
  .obu-cta-row a { width: 100%; text-align: center; }
  .my-course-row { grid-template-columns: 60px 1fr; }
  .my-course-row .mc-open, .my-course-row .mc-locked { grid-column: 1 / -1; text-align: center; }
  .lesson-player-content { padding: 22px 20px 26px; }
  .lp-course-title { font-size: 22px; }
}