/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  min-width: 44px;
  padding: 12px 24px;
  font: 700 0.875rem/1.25rem var(--font-display);
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-default);
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s;
}

.btn:hover {
  text-decoration: none;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary-container);
  color: var(--color-on-primary);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-on-tertiary-fixed);
  border-color: var(--color-on-tertiary-fixed);
}

.btn--secondary:hover {
  background-color: var(--color-tertiary-fixed);
  color: var(--color-on-tertiary-fixed);
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-primary);
  border-color: transparent;
  padding-inline: 16px;
}

.btn--ghost:hover {
  background-color: var(--color-primary-fixed);
  color: var(--color-on-primary-fixed);
}

.btn--icon {
  padding: 10px;
  min-width: 44px;
}

/* Chips / tags */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font: var(--text-label-md);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
}

.chip--primary {
  background-color: var(--color-primary-fixed);
  color: var(--color-on-primary-fixed-variant);
}

.chip--secondary {
  background-color: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
}

.chip--tertiary {
  background-color: var(--color-tertiary-fixed);
  color: var(--color-on-tertiary-fixed-variant);
}

/* Cards */
.card {
  background-color: var(--color-surface-container-lowest);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.card:hover {
  border-color: var(--color-outline-variant);
  box-shadow: var(--shadow-ambient);
}

.card--surface {
  background-color: var(--color-surface-container-low);
  border-color: var(--color-surface-container-highest);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary-fixed);
  color: var(--color-on-primary-fixed-variant);
  border-radius: var(--radius-default);
  margin-bottom: 20px;
}

.card__icon--green {
  background-color: var(--color-secondary-fixed);
  color: var(--color-on-secondary-fixed-variant);
}

.card__title {
  font: var(--text-headline-md);
  color: var(--color-on-tertiary-fixed);
  margin-bottom: 8px;
}

.card__title a {
  color: inherit;
  text-decoration: none;
}

.card__title a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.card__desc {
  font: var(--text-body-md);
  color: var(--color-on-surface-variant);
  margin-bottom: 16px;
}

.card__link {
  font: var(--text-label-md);
  color: var(--color-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
}

.card__link:hover {
  text-decoration: underline;
}

.card__meta {
  font: var(--text-label-md);
  color: var(--color-on-surface-variant);
  margin-bottom: 12px;
}

/* Forms */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font: var(--text-label-md);
  color: var(--color-on-surface);
}

.form-input {
  width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  font: var(--text-body-md);
  color: var(--color-on-surface);
  background-color: var(--color-surface-container-lowest);
  border: 1px solid rgba(28, 37, 38, 0.2);
  border-radius: var(--radius-default);
}

.form-input:focus {
  border-color: var(--color-primary);
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.search-form {
  display: flex;
  gap: 8px;
  width: 100%;
}

.search-form--hero {
  align-items: flex-end;
}

.search-form__field {
  flex: 1;
}

.search-form .form-input {
  flex: 1;
}

/* Valves list */
.valve-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.valve-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

.valve-item:first-child {
  padding-top: 0;
}

.valve-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.valve-item__marker {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

.valve-item__content {
  flex: 1;
  min-width: 0;
}

.valve-item__title {
  font: 600 1rem/1.5rem var(--font-body);
  color: var(--color-on-surface);
  margin-bottom: 4px;
}

.valve-item__title a {
  color: inherit;
  text-decoration: none;
}

.valve-item__title a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.valve-item__date {
  font: var(--text-label-md);
  color: var(--color-on-surface-variant);
}

/* Carousel (accessible, manual only) */
.carousel {
  position: relative;
}

.carousel__viewport {
  overflow: hidden;
}

.carousel__track {
  position: relative;
}

.carousel__slide[hidden] {
  display: none;
}

.carousel__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}

.carousel__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 10px;
  background: var(--color-surface-container-lowest);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-default);
  color: var(--color-on-surface);
  cursor: pointer;
  font: var(--text-label-md);
}

.carousel__btn:hover {
  background: var(--color-surface-container-low);
  border-color: var(--color-outline-variant);
}

.carousel__btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.carousel__indicator {
  font: var(--text-label-md);
  color: var(--color-on-surface-variant);
  min-width: 80px;
  text-align: center;
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--color-inverse-surface);
  color: var(--color-inverse-on-surface);
  padding: 20px var(--gutter);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
}

.cookie-banner[hidden] {
  display: none;
}

.cookie-banner__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.cookie-banner__text {
  flex: 1;
  min-width: 280px;
  font: var(--text-body-md);
}

.cookie-banner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.cookie-banner .btn--primary {
  background-color: var(--color-primary-container);
}

.cookie-banner .btn--ghost {
  color: var(--color-inverse-on-surface);
  border: 1px solid rgba(233, 243, 243, 0.4);
}

.cookie-banner .btn--ghost:hover {
  background-color: rgba(233, 243, 243, 0.1);
  color: var(--color-inverse-on-surface);
}

/* Icon SVG helper */
.icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.icon--sm {
  width: 20px;
  height: 20px;
}