/* ==========================================================================
   Components: button, card, form, badge, icon, link, carousel
   ========================================================================== */

/* Button =================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  border: 1px solid transparent;
  text-decoration: none;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn--ghost:hover {
  background: var(--color-bg-alt);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--lg { padding: 14px 28px; font-size: var(--text-base); }
.btn--sm { padding: 6px 14px; font-size: var(--text-xs); }
.btn--icon { width: 40px; height: 40px; padding: 0; }
.btn--block { width: 100%; }

/* Icon ====================================================================== */
.icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}
.icon--sm { width: 16px; height: 16px; }
.icon--lg { width: 28px; height: 28px; }

/* Link ====================================================================== */
.link {
  color: var(--color-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: color var(--transition-fast);
}
.link:hover { color: var(--color-primary-dark); }
.link::after {
  content: '→';
  transition: transform var(--transition-fast);
}
.link:hover::after { transform: translateX(3px); }

/* Service card ============================================================= */
/* Раскладка: значок слева, заголовок справа в одной строке, описание ниже, org внизу. */
.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  align-items: flex-start;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "icon  title"
    "desc  desc"
    "org   org";
  column-gap: var(--space-3);
  row-gap: var(--space-2);
  min-height: 200px;
  transition: all var(--transition);
  cursor: pointer;
  text-decoration: none;
  flex-direction: column;
  color: inherit;
}
.service-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.service-card__icon {
  grid-area: icon;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-bottom: 0;
}
.service-card__icon svg {
  width: 22px;
  height: 22px;
  stroke-width: 1.5;
}
.service-card__title {
  grid-area: title;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
  margin: 0;
}
.service-card__desc { grid-area: desc; }
.service-card__desc:empty { display: none; }
.service-card__badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--color-primary-light);
  color: var(--color-primary);
  align-self: flex-start;
}
.service-card__badge--free {
  background: var(--color-success-light);
  color: var(--color-success);
}
.service-card__org {
  grid-area: org;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* News card ================================================================ */
.news-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}
.news-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.news-card__image {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  position: relative;
  overflow: hidden;
}
.news-card__image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 30%, rgba(255,255,255,0.18), transparent 60%);
}
.news-card__image--alt {
  background: linear-gradient(135deg, #0D47A1 0%, #1976D2 100%);
}
.news-card__image--alt2 {
  background: linear-gradient(135deg, #006064 0%, #00A6D6 100%);
}
.news-card__image--alt3 {
  background: linear-gradient(135deg, #4A148C 0%, #9C27B0 100%);
}
.news-card__category {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--color-primary);
  padding: 4px 12px;
  font-size: var(--text-xs);
  font-weight: 700;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  z-index: 1;
}
.news-card__body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}
.news-card__date {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}
.news-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
  margin: 0;
}
.news-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
  flex: 1;
}

/* Form ===================================================================== */
.input {
  width: 100%;
  padding: 12px 16px;
  font-size: var(--text-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  transition: all var(--transition-fast);
}
.input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-group { margin-bottom: var(--space-4); }
.form-group__label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

/* Search form (hero) ======================================================= */
.search-form {
  display: flex;
  gap: var(--space-2);
  background: #fff;
  padding: 6px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 640px;
  margin: 0 auto;
}
.search-form__input {
  flex: 1;
  border: none;
  padding: 12px 16px;
  font-size: var(--text-base);
  background: transparent;
  color: var(--color-text);
}
.search-form__input:focus { outline: none; }
@media (max-width: 479px) {
  .search-form { flex-direction: column; padding: var(--space-3); }
  .search-form__input { padding: 10px; }
}

/* Carousel ================================================================= */
.carousel { position: relative; }
.carousel__track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: calc((100% - 2 * var(--space-6)) / 3);
  gap: var(--space-6);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: var(--space-3) 4px var(--space-6);
  scrollbar-width: thin;
}
.carousel__track > * { scroll-snap-align: start; }
.carousel__track::-webkit-scrollbar { height: 6px; }
.carousel__track::-webkit-scrollbar-track { background: var(--color-bg-alt); border-radius: 3px; }
.carousel__track::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
.carousel__track::-webkit-scrollbar-thumb:hover { background: var(--color-primary); }

.carousel__controls { display: flex; gap: var(--space-2); }
.carousel__btn {
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  color: var(--color-text);
}
.carousel__btn:hover:not(:disabled) {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.carousel__btn:disabled { opacity: 0.4; cursor: not-allowed; }

@media (max-width: 1023px) {
  .carousel__track { grid-auto-columns: calc((100% - var(--space-6)) / 2); }
}
@media (max-width: 639px) {
  .carousel__track { grid-auto-columns: 85%; }
}