/* SMSLab — courses catalog */

.courses-page {
  padding: 88px 0 64px;
}

.courses-hero {
  margin-bottom: 24px;
}

.courses-hero h1 {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.courses-hero p {
  color: var(--text-dim, #6b7280);
  font-size: 16px;
  max-width: 640px;
  line-height: 1.65;
}

.course-cat-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--blue, #2563eb);
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 999px;
  padding: 5px 12px;
  margin-bottom: 10px;
}

.courses-catalog-tools {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 18px 0 10px;
  border-top: 1px solid var(--border, rgba(24, 31, 71, 0.1));
  margin-bottom: 8px;
}

.course-filter-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.course-filter-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-mute, #8b92a8);
}

.course-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.course-filter {
  appearance: none;
  border: 1px solid var(--border, rgba(24, 31, 71, 0.1));
  background: #fff;
  color: var(--text-dim, #5a6178);
  border-radius: 999px;
  padding: 8px 13px;
  font: 500 12px Inter, sans-serif;
  cursor: pointer;
  transition: 0.2s;
}

.course-filter:hover {
  border-color: var(--blue, #4954e6);
  color: var(--blue, #4954e6);
}

.course-filter.active {
  background: linear-gradient(135deg, #4954e6, #8a5cf6);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 6px 18px rgba(73, 84, 230, 0.22);
}

.course-result-count {
  margin: 0 0 18px;
  color: var(--text-mute, #8b92a8);
  font-size: 12px;
}

.courses-catalog .course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.courses-catalog .card-course {
  background: var(--panel, #fff);
  border: 1px solid var(--border, rgba(24, 31, 71, 0.1));
  border-radius: 14px;
  box-shadow: var(--shadow-card, 0 2px 10px rgba(24, 31, 71, 0.04));
  transition: transform 0.22s ease, box-shadow 0.22s ease;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  padding: 0;
}

.courses-catalog .card-course:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover, 0 14px 32px rgba(24, 31, 71, 0.1));
}

.courses-catalog .card-preview {
  position: relative;
  aspect-ratio: 2.15 / 1;
  overflow: hidden;
  background: #f6f7fb;
  border-bottom: 1px solid var(--border, rgba(24, 31, 71, 0.1));
  line-height: 0;
}

.courses-catalog .card-preview-label {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 2;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(73, 84, 230, 0.18);
  box-shadow: 0 6px 18px rgba(24, 31, 71, 0.1);
  font-family: "IBM Plex Mono", monospace;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #4954e6;
  backdrop-filter: blur(8px);
}

.courses-catalog .card-preview img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: top center;
}

.courses-catalog .card-body {
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.courses-catalog .card-url {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  color: #0e9e97;
  margin-bottom: 6px;
  display: block;
}

.courses-catalog .card-course h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.35;
  color: var(--text, #10142a);
}

.courses-catalog .card-course p {
  font-size: 12px;
  line-height: 1.5;
  margin-bottom: 12px;
  color: var(--text-dim, #5a6178);
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.courses-catalog .btn-link {
  font-size: 12px;
  color: var(--blue, #4954e6);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
}

.course-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.course-card-tag {
  display: inline-flex;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(73, 84, 230, 0.07);
  border: 1px solid rgba(73, 84, 230, 0.12);
  color: var(--blue, #4954e6);
  font-size: 10px;
  font-weight: 600;
  width: fit-content;
}

.courses-empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 24px;
  color: var(--text-dim, #5a6178);
  font-size: 15px;
  border: 1px dashed var(--border, rgba(24, 31, 71, 0.1));
  border-radius: 14px;
  background: #fff;
}

@media (max-width: 980px) {
  .courses-catalog .course-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .courses-catalog .course-grid {
    grid-template-columns: 1fr;
  }
}