/* ==========================================================
   PYCLASS · CATÁLOGO DE CURSOS
   Versión: 1.0.0
========================================================== */

.catalog-main {
  min-height: 100vh;
  padding-top: 82px;
}

.catalog-hero {
  padding: 76px 0 68px;
  background:
    radial-gradient(
      circle at 85% 20%,
      rgba(79, 111, 143, 0.11),
      transparent 26%
    ),
    linear-gradient(
      180deg,
      #f7f8fa,
      #f0f3f6
    );
  border-bottom: 1px solid var(--public-border);
}

.catalog-breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 34px;
  color: var(--public-text-muted);
  font-size: 0.82rem;
}

.catalog-breadcrumb a:hover {
  color: var(--public-primary);
}

.catalog-breadcrumb strong {
  color: var(--public-text);
}

.catalog-hero-grid {
  display: grid;
  grid-template-columns:
    minmax(0, 1fr)
    minmax(300px, 0.45fr);
  gap: 60px;
  align-items: end;
}

.catalog-hero h1 {
  max-width: 760px;
  margin: 17px 0 18px;
  font-size: clamp(2.75rem, 6vw, 5rem);
  line-height: 0.99;
  letter-spacing: -0.06em;
}

.catalog-hero p {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--public-text-soft);
  font-size: 1.05rem;
  line-height: 1.75;
}

.catalog-summary-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 19px;
  align-items: center;
  padding: 23px;
  border: 1px solid var(--public-border);
  border-radius: 21px;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: var(--public-shadow-soft);
}

.catalog-summary-card > span {
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
  border-radius: 20px;
  background: var(--public-primary);
  color: white;
  font-size: 1.65rem;
  font-weight: 850;
}

.catalog-summary-card div {
  display: grid;
  gap: 5px;
}

.catalog-summary-card strong {
  font-size: 0.95rem;
}

.catalog-summary-card p {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.5;
}

.catalog-content {
  padding: 58px 0 108px;
  background: var(--public-bg);
}

.catalog-toolbar {
  display: grid;
  grid-template-columns: 1fr 230px;
  gap: 18px;
  align-items: end;
}

.catalog-search,
.catalog-sort {
  display: grid;
  gap: 9px;
}

.catalog-search label,
.catalog-sort label {
  color: var(--public-text);
  font-size: 0.79rem;
  font-weight: 800;
}

.catalog-search-control {
  min-height: 54px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 11px;
  align-items: center;
  padding: 0 16px;
  border: 1px solid var(--public-border);
  border-radius: 15px;
  background: var(--public-surface);
  box-shadow: var(--public-shadow-soft);
  transition:
    border-color var(--public-transition),
    box-shadow var(--public-transition);
}

.catalog-search-control:focus-within {
  border-color: #aebfce;
  box-shadow:
    0 0 0 4px rgba(31, 58, 95, 0.08);
}

.catalog-search-control > span {
  color: var(--public-text-muted);
  font-size: 1.15rem;
}

.catalog-search-control input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--public-text);
}

.catalog-search-control input::placeholder {
  color: #929ead;
}

.catalog-clear-button {
  padding: 7px 9px;
  border-radius: 9px;
  background: var(--public-bg-soft);
  color: var(--public-text-soft);
  font-size: 0.72rem;
  font-weight: 800;
}

.catalog-sort select {
  width: 100%;
  min-height: 54px;
  padding: 0 14px;
  border: 1px solid var(--public-border);
  border-radius: 15px;
  outline: 0;
  background: var(--public-surface);
  color: var(--public-text);
  box-shadow: var(--public-shadow-soft);
}

.catalog-filters {
  display: grid;
  gap: 21px;
  margin-top: 29px;
  padding: 22px;
  border: 1px solid var(--public-border);
  border-radius: 18px;
  background: var(--public-surface);
}

.catalog-filter-group {
  display: grid;
  grid-template-columns: 95px 1fr;
  gap: 16px;
  align-items: center;
}

.catalog-filter-title {
  color: var(--public-text-soft);
  font-size: 0.77rem;
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.catalog-filter-buttons {
  display: flex;
  gap: 9px;
  flex-wrap: wrap;
}

.catalog-filter-button {
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid var(--public-border);
  border-radius: 999px;
  background: var(--public-surface);
  color: var(--public-text-soft);
  font-size: 0.77rem;
  font-weight: 750;
  transition:
    background var(--public-transition),
    color var(--public-transition),
    border-color var(--public-transition);
}

.catalog-filter-button:hover {
  border-color: #b9c6d2;
  color: var(--public-primary);
}

.catalog-filter-button.active {
  border-color: var(--public-primary);
  background: var(--public-primary);
  color: white;
}

.catalog-results-head {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  align-items: end;
  margin: 35px 0 22px;
}

.catalog-results-head > div {
  display: grid;
  gap: 5px;
}

.catalog-results-head strong {
  font-size: 1.05rem;
}

.catalog-results-head span {
  color: var(--public-text-muted);
  font-size: 0.82rem;
}

.catalog-reset-button {
  padding: 0;
  background: transparent;
  color: var(--public-primary);
  font-size: 0.79rem;
  font-weight: 800;
}

.catalog-course-grid {
  display: grid;
  grid-template-columns:
    repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.catalog-course-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--public-border);
  border-radius: var(--public-radius-lg);
  background: var(--public-surface);
  box-shadow: var(--public-shadow-soft);
  transition:
    transform var(--public-transition),
    box-shadow var(--public-transition);
}

.catalog-course-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--public-shadow);
}

.catalog-course-cover {
  min-height: 216px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 22px;
}

.catalog-cover-calculus {
  background:
    linear-gradient(
      145deg,
      #dfe8f1,
      #c7d6e5
    );
}

.catalog-cover-python,
.catalog-cover-logic {
  background:
    linear-gradient(
      145deg,
      #dce6ec,
      #c4d5df
    );
}

.catalog-cover-school,
.catalog-cover-data {
  background:
    linear-gradient(
      145deg,
      #ebe7f3,
      #d9d2e7
    );
}

.catalog-cover-optimization {
  background:
    linear-gradient(
      145deg,
      #e4e8df,
      #cfd8c8
    );
}

.catalog-course-cover-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.catalog-access-badge,
.catalog-audience-badge {
  padding: 7px 10px;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 850;
}

.catalog-audience-badge {
  background: rgba(255, 255, 255, 0.67);
  color: var(--public-text-soft);
}

.catalog-access-free {
  background: var(--public-green-soft);
  color: var(--public-green);
}

.catalog-access-mixed {
  background: var(--public-amber-soft);
  color: var(--public-amber);
}

.catalog-access-premium {
  background: var(--public-purple-soft);
  color: var(--public-purple);
}

.catalog-cover-symbol {
  align-self: flex-end;
  color: rgba(31, 58, 95, 0.7);
  font-size: 4rem;
  font-weight: 750;
  line-height: 1;
}

.catalog-cover-symbol.code {
  font-family:
    ui-monospace,
    SFMono-Regular,
    Menlo,
    Consolas,
    monospace;
  font-size: 3.25rem;
}

.catalog-course-body {
  padding: 24px;
}

.catalog-course-category {
  color: var(--public-primary);
  font-size: 0.71rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.catalog-course-body h2 {
  margin: 12px 0 11px;
  font-size: 1.42rem;
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.catalog-course-description {
  min-height: 80px;
  margin-bottom: 19px;
  color: var(--public-text-soft);
  font-size: 0.9rem;
  line-height: 1.65;
}

.catalog-course-tags {
  display: flex;
  gap: 7px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.catalog-course-tags span {
  padding: 6px 9px;
  border-radius: 9px;
  background: var(--public-bg-soft);
  color: var(--public-text-muted);
  font-size: 0.68rem;
  font-weight: 700;
}

.catalog-course-details {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 9px;
  margin-bottom: 21px;
}

.catalog-course-detail {
  padding: 11px;
  border-radius: 11px;
  background: #f6f8fa;
}

.catalog-course-detail strong {
  display: block;
  margin-bottom: 3px;
  font-size: 0.74rem;
}

.catalog-course-detail span {
  color: var(--public-text-muted);
  font-size: 0.68rem;
}

.catalog-course-action {
  width: 100%;
  min-height: 47px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border-radius: 12px;
  background: var(--public-primary);
  color: white;
  font-size: 0.84rem;
  font-weight: 850;
}

.catalog-course-action.coming-soon {
  background: var(--public-bg-soft);
  color: var(--public-text-soft);
}

.catalog-empty-state {
  grid-column: 1 / -1;
  padding: 54px 24px;
  border: 1px dashed #cbd4dd;
  border-radius: 20px;
  background: var(--public-surface);
  text-align: center;
}

.catalog-empty-state strong {
  display: block;
  margin-bottom: 9px;
  font-size: 1.1rem;
}

.catalog-empty-state p {
  max-width: 540px;
  margin: 0 auto;
  color: var(--public-text-soft);
  line-height: 1.65;
}

@media (max-width: 1040px) {
  .catalog-course-grid {
    grid-template-columns:
      repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .catalog-hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .catalog-summary-card {
    max-width: 480px;
  }

  .catalog-toolbar {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .catalog-main {
    padding-top: 72px;
  }

  .catalog-hero {
    padding: 54px 0 48px;
  }

  .catalog-hero h1 {
    font-size: 2.75rem;
  }

  .catalog-content {
    padding: 40px 0 78px;
  }

  .catalog-filter-group {
    grid-template-columns: 1fr;
    gap: 11px;
  }

  .catalog-results-head {
    display: grid;
    align-items: start;
  }

  .catalog-reset-button {
    justify-self: start;
  }

  .catalog-course-grid {
    grid-template-columns: 1fr;
  }

  .catalog-course-description {
    min-height: auto;
  }
}