/* SRS-оверлей для кабинета.
 * См. srs_overlay.js — рантайм, который монтирует эту разметку.
 */

html.srs-overlay-lock,
body.srs-overlay-lock {
  overflow: hidden;
}

.srs-overlay {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: flex;
  align-items: stretch;
  justify-content: center;
  font-family: 'DM Sans', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

.srs-overlay-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 25, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.srs-overlay-panel {
  position: relative;
  z-index: 1;
  width: min(640px, 100%);
  margin: auto;
  max-height: 100vh;
  background: #fff;
  border-radius: 24px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

@media (max-width: 720px) {
  .srs-overlay-panel {
    margin: 0;
    border-radius: 0;
    width: 100%;
    max-height: 100vh;
    height: 100vh;
  }
}

.srs-overlay-header {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid #eef0ec;
}

.srs-overlay-progress {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.srs-overlay-counter {
  font-size: 13px;
  color: #6b7770;
  letter-spacing: 0.01em;
}

.srs-overlay-bar {
  display: block;
  width: 100%;
  height: 4px;
  background: #eef0ec;
  border-radius: 99px;
  overflow: hidden;
}

.srs-overlay-bar-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #3e8c6f, #5fb398);
  transition: width 220ms ease;
}

.srs-overlay-close {
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: #f3f5f1;
  color: #2a3531;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  transition: background 150ms ease;
}
.srs-overlay-close:hover { background: #e6eae0; }

.srs-overlay-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
}

.srs-overlay-empty {
  margin: auto;
  text-align: center;
  color: #4d5852;
  max-width: 420px;
  padding: 24px;
}

/* Skeleton — повторяет форму реальной карточки, шиммерит и плавно
 * уходит в фон, когда приезжает контент. */
.srs-overlay-skeleton {
  display: flex;
  flex-direction: column;
  gap: 14px;
  animation: srs-sk-fade-in 320ms ease both;
}

.srs-overlay-skeleton.srs-sk-leaving {
  animation: srs-sk-fade-out 200ms ease both;
}

.srs-sk {
  position: relative;
  overflow: hidden;
  background: #eef0ec;
  border-radius: 8px;
}

.srs-sk::after {
  content: '';
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.65) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  animation: srs-sk-shimmer 1.4s ease-in-out infinite;
}

.srs-sk-crumb {
  width: 42%;
  height: 10px;
  border-radius: 99px;
  opacity: 0.7;
}

.srs-sk-line {
  height: 22px;
  border-radius: 10px;
  background: #e6e9e3;
}
.srs-sk-line-1 { width: 92%; }
.srs-sk-line-2 { width: 78%; }
.srs-sk-line-3 { width: 54%; margin-bottom: 4px; }

.srs-sk-context {
  height: 64px;
  border-radius: 14px;
  background: #f1f3ee;
  margin-top: 4px;
}

.srs-sk-button {
  height: 52px;
  border-radius: 14px;
  background: #dbe7df;
  margin-top: 8px;
}

.srs-sk-caption {
  margin-top: 6px;
  text-align: center;
  font-size: 12px;
  color: #8a948c;
  letter-spacing: 0.04em;
  animation: srs-sk-caption-pulse 1.8s ease-in-out infinite;
}

@keyframes srs-sk-shimmer {
  0% { transform: translateX(-100%); }
  60% { transform: translateX(100%); }
  100% { transform: translateX(100%); }
}

@keyframes srs-sk-fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes srs-sk-fade-out {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(-4px); }
}

@keyframes srs-sk-caption-pulse {
  0%, 100% { opacity: 0.55; }
  50%      { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .srs-sk::after,
  .srs-sk-caption,
  .srs-overlay-skeleton { animation: none !important; }
}

.srs-overlay-empty h3 {
  margin: 0 0 8px;
  font-size: 20px;
  color: #1c2622;
}

.srs-overlay-empty p {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.5;
  color: #4d5852;
}

.srs-overlay-finish-line { margin: 4px 0 !important; }
.srs-overlay-finish-muted { color: #788278 !important; font-size: 13px !important; }

.srs-overlay-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1 1 auto;
  min-height: 0;
}

.srs-overlay-card--enter {
  animation: srs-card-enter 360ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

.srs-overlay-card--enter > * {
  animation: srs-card-child-enter 420ms cubic-bezier(0.16, 1, 0.3, 1) both;
}
.srs-overlay-card--enter > *:nth-child(1) { animation-delay: 40ms; }
.srs-overlay-card--enter > *:nth-child(2) { animation-delay: 100ms; }
.srs-overlay-card--enter > *:nth-child(3) { animation-delay: 160ms; }
.srs-overlay-card--enter > *:nth-child(4) { animation-delay: 220ms; }
.srs-overlay-card--enter > *:nth-child(5) { animation-delay: 280ms; }
.srs-overlay-card--enter > *:nth-child(6) { animation-delay: 320ms; }

@keyframes srs-card-enter {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes srs-card-child-enter {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .srs-overlay-card--enter,
  .srs-overlay-card--enter > * { animation: none !important; }
}

.srs-overlay-crumbs {
  font-size: 11.5px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: #6b7770;
  flex: 0 0 auto;
}

.srs-overlay-question {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 23px;
  line-height: 1.3;
  color: #1c2622;
  font-weight: 600;
  flex: 0 0 auto;
}

/* Контекст — цитата из методички, может быть длинной. Скроллим её
 * внутри собственного блока, чтобы вопрос и опции/кнопки всегда
 * оставались на экране. Мягкие fade-маски сверху/снизу подсказывают,
 * что внутри ещё есть текст. */
.srs-overlay-context {
  font-size: 14px;
  line-height: 1.55;
  color: #4d5852;
  background: #f6f7f3;
  border-radius: 14px;
  padding: 10px 14px;
  flex: 0 1 auto;
  min-height: 0;
  max-height: clamp(96px, 26vh, 240px);
  overflow-y: auto;
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 14px, #000 calc(100% - 14px), transparent 100%);
          mask-image: linear-gradient(to bottom, transparent 0, #000 14px, #000 calc(100% - 14px), transparent 100%);
  scrollbar-width: thin;
  scrollbar-color: #cdd3c8 transparent;
}
.srs-overlay-context::-webkit-scrollbar { width: 6px; }
.srs-overlay-context::-webkit-scrollbar-thumb { background: #cdd3c8; border-radius: 99px; }

.srs-overlay-divider {
  height: 1px;
  background: #eef0ec;
  margin: 2px 0;
}

.srs-overlay-answer {
  font-size: 17px;
  line-height: 1.55;
  color: #1c2622;
}

.srs-overlay-btn {
  appearance: none;
  border: none;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  border-radius: 14px;
  padding: 14px 18px;
  font-size: 15px;
  transition: transform 120ms ease, background 150ms ease, box-shadow 150ms ease;
}

.srs-overlay-btn-primary {
  background: #3e8c6f;
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 10px 24px rgba(62, 140, 111, 0.25);
}
.srs-overlay-btn-primary:hover { background: #357a61; }
.srs-overlay-btn-primary:active { transform: translateY(1px); }

.srs-overlay-reveal {
  align-self: stretch;
}

.srs-overlay-reveal-key {
  font-size: 12px;
  background: rgba(255,255,255,0.18);
  padding: 3px 8px;
  border-radius: 8px;
  font-weight: 500;
}

.srs-overlay-grades {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  margin-top: 4px;
  flex: 0 0 auto;
}

.srs-overlay-grade {
  appearance: none;
  border: 1px solid transparent;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  border-radius: 12px;
  padding: 11px 10px;
  font-size: 15px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: transform 120ms ease, background 150ms ease, box-shadow 150ms ease;
}

.srs-overlay-grade:active { transform: translateY(1px); }

.srs-overlay-grade-again {
  background: #fff1ec;
  color: #b94626;
  border-color: #f5d6c8;
}
.srs-overlay-grade-again:hover { background: #ffe6dc; }

.srs-overlay-grade-hard {
  background: #f4eedc;
  color: #7d5a1d;
  border-color: #e6dcb8;
}
.srs-overlay-grade-hard:hover { background: #ede4c8; }

.srs-overlay-grade-easy {
  background: #e6f3ec;
  color: #226a48;
  border-color: #c5dfcf;
}
.srs-overlay-grade-easy:hover { background: #d8ecdf; }

.srs-overlay-grade-key {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  opacity: 0.75;
}

.srs-overlay-hint {
  margin: 6px 0 0;
  text-align: center;
  font-size: 12px;
  color: #788278;
}

.srs-overlay-source {
  margin-top: 4px;
  align-self: flex-start;
  font-size: 12.5px;
  color: #3e8c6f;
  text-decoration: none;
  border-bottom: 1px dashed rgba(62, 140, 111, 0.4);
  padding-bottom: 1px;
  flex: 0 0 auto;
}
.srs-overlay-source:hover { color: #2f6f56; }

.srs-overlay-hint-warn { color: #b94626 !important; }

.srs-overlay-grades-single { grid-template-columns: 1fr; }

/* Markdown-контент внутри карточки: убираем лишние верхние/нижние
 * отступы у первого/последнего параграфа, чтобы блоки не разъезжались. */
.md-content > *:first-child { margin-top: 0; }
.md-content > *:last-child  { margin-bottom: 0; }
.md-content p { margin: 0.45em 0; }
.md-content ul,
.md-content ol { margin: 0.5em 0; padding-left: 1.4em; }
.md-content li { margin: 0.18em 0; }
.md-content strong { font-weight: 600; }
.md-content em { font-style: italic; }
.md-content code {
  background: #eef0ec;
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 0.92em;
}
.md-content .katex { font-size: 1em; }
.md-content .katex-display { margin: 0.4em 0; overflow-x: auto; overflow-y: hidden; padding: 2px 0; }
/* GFM-таблицы: даём горизонтальный скролл, чтобы широкие таблицы
   (препарат · дозы · кратность) не ломали ширину карточки/оверлея. */
.md-content table {
  border-collapse: collapse;
  width: 100%;
  margin: 0.6em 0;
  font-size: 0.92em;
  display: block;
  overflow-x: auto;
}
.md-content thead { background: #f5f3ee; }
.md-content th,
.md-content td {
  border: 1px solid #d8d4cb;
  padding: 6px 10px;
  text-align: left;
  vertical-align: top;
  line-height: 1.4;
}
.md-content th { font-weight: 600; color: var(--ink, #2c2926); }
.md-content tbody tr:nth-child(even) td { background: rgba(0, 0, 0, 0.02); }

.srs-overlay-options {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 2px;
  flex: 0 0 auto;
}

.srs-overlay-option {
  appearance: none;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  text-align: left;
  cursor: pointer;
  font: inherit;
  font-size: 14.5px;
  line-height: 1.4;
  color: #1c2622;
  padding: 10px 14px;
  background: #f6f7f3;
  border: 1.5px solid #e6e9e3;
  border-radius: 12px;
  transition: background 150ms ease, border-color 150ms ease, transform 120ms ease;
}
.srs-overlay-option:hover { background: #eef0e7; }
.srs-overlay-option:active { transform: translateY(1px); }
.srs-overlay-option:disabled { cursor: default; }
.srs-overlay-option:disabled:hover { background: #f6f7f3; }

.srs-overlay-option-letter {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  color: #5d6864;
  background: #fff;
  border: 1px solid #d8dcd4;
  border-radius: 8px;
}

.srs-overlay-option-text { flex: 1 1 auto; min-width: 0; }
.srs-overlay-option-text p { margin: 0; }

.srs-overlay-options-revealed .srs-overlay-option {
  opacity: 0.85;
}

.srs-overlay-option-correct {
  background: #e6f3ec !important;
  border-color: #87c2a3 !important;
  opacity: 1 !important;
}
.srs-overlay-option-correct .srs-overlay-option-letter {
  background: #2f8b62; color: #fff; border-color: #2f8b62;
}

.srs-overlay-option-wrong {
  background: #fdecea !important;
  border-color: #e6a094 !important;
  opacity: 1 !important;
}
.srs-overlay-option-wrong .srs-overlay-option-letter {
  background: #b94626; color: #fff; border-color: #b94626;
}

.srs-overlay-reveal-link {
  appearance: none;
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  color: #6b7770;
  align-self: center;
  margin-top: 4px;
  text-decoration: underline dotted;
  text-underline-offset: 4px;
}
.srs-overlay-reveal-link:hover { color: #3e8c6f; }