/* ─────────────────────────────────────────────────────────────────────────
   /courses catalog — surface-scoped styles
   Loaded via {% block head_extra %} on courses/catalog.twig only.
   Tokens consumed from tokens.css.
   ───────────────────────────────────────────────────────────────────────── */

/* ─── Page header ──────────────────────────────────────────────────────── */

.catalog-page-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-block: 0 var(--space-lg);
  padding-bottom: var(--space-xs);
  border-bottom: var(--border-hairline);
}

.catalog-page-header__title {
  font-family: var(--font-sans);
  font-size: var(--type-headline-size);
  font-weight: var(--type-headline-weight);
  line-height: var(--type-headline-line);
  letter-spacing: var(--type-headline-track);
  color: var(--color-text);
  margin: 0;
  text-wrap: balance;
}

.catalog-page-header__count {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  font-size: var(--type-label-size);
  color: var(--color-text-soft);
}

/* ─── Filter panel ─────────────────────────────────────────────────────── */

.catalog-filters {
  background-color: var(--color-surface-elevated);
  border: var(--border-hairline);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-lg);
  box-shadow: none;
}

.catalog-filters .label {
  font-family: var(--font-sans);
  font-size: var(--type-label-size);
  font-weight: var(--type-label-weight);
  color: var(--color-text-soft);
  margin-bottom: var(--space-3xs);
}

.catalog-filters .input,
.catalog-filters .select select {
  background-color: var(--color-surface);
  border: var(--border-hairline);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--type-body-size);
  box-shadow: none;
  transition: border-color 0.15s var(--ease-out-quart);
}
.catalog-filters .input:hover,
.catalog-filters .select select:hover {
  border-color: var(--color-border-strong);
}
.catalog-filters .input:focus,
.catalog-filters .select select:focus,
.catalog-filters .input:focus-visible,
.catalog-filters .select select:focus-visible {
  outline: none;
  border-color: var(--color-sky-action);
  box-shadow: var(--focus-ring);
}
.catalog-filters .input::placeholder {
  color: var(--color-text-soft);
}

/* Inline range readout: "0 - 8 hrs" / "$0 - $500" */
.catalog-filters__readout {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  font-size: var(--type-caption-size);
  font-weight: 500;
  color: var(--color-text-soft);
  margin-left: var(--space-3xs);
}

/* ─── Dual-handle range slider ─────────────────────────────────────────── */

.catalog-slider {
  position: relative;
  height: 30px;
  margin-top: var(--space-3xs);
}

.catalog-slider__thumb {
  position: absolute;
  width: 100%;
  pointer-events: none;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
}
.catalog-slider__thumb--lower { z-index: 3; }
.catalog-slider__thumb--upper { z-index: 4; }

.catalog-slider__thumb::-webkit-slider-thumb {
  -webkit-appearance: none;
  pointer-events: all;
  width: 16px;
  height: 16px;
  border-radius: var(--radius-pill);
  background-color: var(--color-sky-action);
  border: 2px solid var(--color-surface-elevated);
  cursor: pointer;
  transition: transform 0.12s var(--ease-out-quart);
}
.catalog-slider__thumb::-moz-range-thumb {
  pointer-events: all;
  width: 14px;
  height: 14px;
  border-radius: var(--radius-pill);
  background-color: var(--color-sky-action);
  border: 2px solid var(--color-surface-elevated);
  cursor: pointer;
  transition: transform 0.12s var(--ease-out-quart);
}
.catalog-slider__thumb:active::-webkit-slider-thumb,
.catalog-slider__thumb:active::-moz-range-thumb {
  transform: scale(1.15);
}
.catalog-slider__thumb:focus-visible::-webkit-slider-thumb,
.catalog-slider__thumb:focus-visible::-moz-range-thumb {
  box-shadow: var(--focus-ring);
}

.catalog-slider__track {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 100%;
  height: 4px;
  border-radius: var(--radius-pill);
  background-color: var(--color-hairline-strong);
}

.catalog-slider__fill {
  position: absolute;
  height: 100%;
  border-radius: var(--radius-pill);
  background-color: var(--color-sky-action);
}

/* ─── Course card (catalog variant — extended meta) ────────────────────── */

.catalog-course-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background-color: var(--color-surface-elevated);
  border: var(--border-hairline);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.15s var(--ease-out-quart);
}
.catalog-course-card:hover {
  border-color: var(--color-border-strong);
}

.catalog-course-card__figure {
  margin: 0;
  border-bottom: var(--border-hairline);
}

.catalog-course-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--space-md);
  gap: var(--space-2xs);
}

.catalog-course-card__title {
  font-family: var(--font-sans);
  font-size: var(--type-title-size);
  font-weight: var(--type-title-weight);
  line-height: var(--type-title-line);
  letter-spacing: var(--type-title-track);
  margin: 0;
  text-wrap: balance;
}
.catalog-course-card__title a {
  color: var(--color-text);
  text-decoration: none;
  transition: color 0.15s var(--ease-out-quart);
}
.catalog-course-card__title a:hover {
  color: var(--color-sky-action-deep);
}
.catalog-course-card__title a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

.catalog-course-card__heading {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.45;
  color: var(--color-text-soft);
  margin: 0;
  text-wrap: pretty;
}

.catalog-course-card__desc {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-text-soft);
  margin: 0;
  flex: 1;
  text-wrap: pretty;
}

.catalog-course-card__byline {
  font-family: var(--font-sans);
  font-size: var(--type-caption-size);
  color: var(--color-text-soft);
  margin: 0;
}
.catalog-course-card__byline-sep {
  margin: 0 var(--space-3xs);
  color: var(--color-border-strong);
}

.catalog-course-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3xs) var(--space-2xs);
  margin-top: var(--space-2xs);
}

.catalog-course-card__tag {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-sm);
  background-color: var(--color-sky-action-soft);
  color: var(--color-sky-action-deep);
  font-family: var(--font-sans);
  font-size: var(--type-caption-size);
  font-weight: 500;
  line-height: 1.5;
}
.catalog-course-card__tag--neutral {
  background-color: transparent;
  border: var(--border-hairline);
  color: var(--color-text-soft);
}
.catalog-course-card__tag--mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  background-color: transparent;
  border: var(--border-hairline);
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.catalog-course-card__footer {
  border-top: var(--border-hairline);
  padding: var(--space-2xs) var(--space-md);
}
.catalog-course-card__footer a {
  font-family: var(--font-sans);
  font-size: var(--type-label-size);
  font-weight: 500;
  color: var(--color-sky-action-deep);
  text-decoration: none;
}
.catalog-course-card__footer a:hover {
  color: var(--color-sky-action);
}
.catalog-course-card__footer a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

/* ─── Empty state ──────────────────────────────────────────────────────── */

.catalog-empty {
  border: var(--border-hairline);
  border-radius: var(--radius-md);
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
}
.catalog-empty__title {
  font-family: var(--font-sans);
  font-size: var(--type-title-size);
  font-weight: var(--type-title-weight);
  color: var(--color-text);
  margin: 0 0 var(--space-2xs);
}
.catalog-empty__body {
  font-family: var(--font-sans);
  font-size: var(--type-body-size);
  color: var(--color-text-soft);
  margin: 0 0 var(--space-md);
}
.catalog-empty__action {
  font-family: var(--font-sans);
  font-size: var(--type-label-size);
  color: var(--color-sky-action-deep);
  text-decoration: none;
}
.catalog-empty__action:hover {
  color: var(--color-sky-action);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ─── Pagination total caption ─────────────────────────────────────────── */

.catalog-pagination-total {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  font-size: var(--type-caption-size);
  color: var(--color-text-soft);
  text-align: center;
  margin-top: var(--space-sm);
}