/**
 * Cards — Warm-Platinum (Sprint S8)
 *
 * Источник: docs/s8/moodboard.md §4.5 (card), §6 (WCAG).
 * Универсальная карточка .sk-card + модификаторы для программ/новостей/педагогов/отзывов/документов.
 */

.sk-card {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border: var(--card-border);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  height: 100%;
  text-decoration: none;
  color: inherit;
  transition: var(--card-transition);
}

.sk-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
}

.sk-card[href]:focus,
.sk-card-link:focus { outline: none; }

.sk-card[href]:focus-visible,
.sk-card-link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

.sk-card__media {
  position: relative;
  display: block;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  margin: 0;
  background: var(--color-bg-alt);
}

.sk-card__media img,
.sk-card__media picture {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--dur-slow) var(--ease-out);
}

.sk-card:hover .sk-card__media img {
  transform: scale(1.03);
}

.sk-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding: var(--card-padding);
  flex: 1;
}

.sk-card__eyebrow {
  font-family: var(--ff-body);
  font-size: var(--fs-12);
  font-weight: 600;
  letter-spacing: var(--ls-ultra);
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0;
}

.sk-card__title {
  font-family: var(--ff-display);
  font-size: var(--fs-24);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text-primary);
  margin: 0;
}

.sk-card__subtitle {
  font-family: var(--ff-body);
  font-size: var(--fs-14);
  font-weight: 500;
  color: var(--color-text-tertiary);
  margin: 0;
}

.sk-card__divider {
  width: 32px;
  height: 2px;
  background: var(--color-divider);
  border: 0;
  margin: var(--sp-2) 0;
}

.sk-card__text {
  font-family: var(--ff-body);
  font-size: var(--fs-16);
  line-height: var(--lh-relaxed);
  color: var(--color-text-secondary);
  margin: 0;
}

.sk-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  margin-top: auto;
  font-family: var(--ff-body);
  font-size: var(--fs-14);
  font-weight: 500;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}

.sk-card__link::after {
  content: "\2192";
  display: inline-block;
  margin-left: var(--sp-2);
  transition: transform var(--dur-fast) var(--ease-out);
}

.sk-card:hover .sk-card__link {
  color: var(--color-accent-hover);
}

.sk-card:hover .sk-card__link::after {
  transform: translateX(4px);
}

/* ===== Модификатор: Program ===== */
.sk-card--program {
  position: relative;
  border-top: 3px solid var(--color-accent);
}

.sk-card--program .sk-card__title {
  font-size: var(--fs-24);
}

/* ===== Модификатор: News ===== */
.sk-card--news .sk-card__title {
  font-size: var(--fs-18);
  line-height: 1.4;
}

.sk-card--news .sk-card__eyebrow {
  color: var(--color-text-tertiary);
}

/* ===== Модификатор: Staff ===== */
.sk-card--staff .sk-card__media {
  aspect-ratio: 1 / 1;
}

.sk-card--staff .sk-card__title {
  font-size: var(--fs-18);
  font-family: var(--ff-display);
}

.sk-card--staff .sk-card__subtitle {
  font-size: var(--fs-14);
  color: var(--color-text-tertiary);
}

/* ===== Модификатор: Testimonial ===== */
.sk-card--testimonial {
  background: var(--color-bg-subtle);
  border: 1px solid transparent;
}

.sk-card--testimonial .sk-card__body {
  position: relative;
  padding-top: var(--sp-8);
  gap: var(--sp-4);
}

.sk-card--testimonial .sk-card__body::before {
  content: "\201C";
  position: absolute;
  top: var(--sp-2);
  left: var(--sp-4);
  font-family: var(--ff-display);
  font-size: var(--fs-72);
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.5;
}

.sk-card--testimonial .sk-card__text {
  font-family: var(--ff-serif-body);
  font-style: italic;
  color: var(--color-text-primary);
}

.sk-card--testimonial .sk-card__author {
  font-size: var(--fs-14);
  font-weight: 600;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ===== Модификатор: Document ===== */
.sk-card--document {
  flex-direction: row;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-4);
}

.sk-card--document .sk-card__media {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  aspect-ratio: 1 / 1;
  background: var(--color-bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}

.sk-card--document .sk-card__media svg {
  width: 60%;
  height: 60%;
  fill: currentColor;
}

.sk-card--document .sk-card__body {
  padding: 0;
  gap: var(--sp-1);
}

.sk-card--document .sk-card__title {
  font-size: var(--fs-16);
  font-family: var(--ff-body);
  font-weight: 600;
}

.sk-card--document .sk-card__meta {
  font-size: var(--fs-12);
  color: var(--color-text-tertiary);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
}

.sk-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  .sk-card,
  .sk-card__media img,
  .sk-card__link,
  .sk-card__link::after {
    transition: none;
  }
  .sk-card:hover {
    transform: none;
  }
  .sk-card:hover .sk-card__media img {
    transform: none;
  }
  .sk-card:hover .sk-card__link::after {
    transform: none;
  }
}

/* ===== Responsive ===== */
@media (min-width: 768px) {
  .sk-cards-grid { grid-template-columns: repeat(2, 1fr); gap: var(--sp-8); }
  .sk-card--testimonial .sk-card__body { padding: var(--sp-8); padding-top: var(--sp-12); }
}

@media (min-width: 1024px) {
  .sk-cards-grid { grid-template-columns: repeat(3, 1fr); }
  .sk-cards-grid--4 { grid-template-columns: repeat(4, 1fr); }
}