/*
 * Sierra Collective — Course library index page styles
 */

.page { max-width: 900px; margin: 0 auto; padding: 56px 48px 96px; }

.search-bar { margin-bottom: 20px; }
.search-bar input {
  width: 100%; padding: 10px 14px; font-family: var(--font-body); font-size: 13px;
  background: var(--bg2); border: 1px solid var(--border2); color: var(--fg);
  letter-spacing: 0.02em; transition: border-color 0.15s;
}
.search-bar input::placeholder { color: var(--muted); }
.search-bar input:focus { outline: none; border-color: var(--amber-dim); }

.filters { display: flex; align-items: center; gap: 8px; margin-bottom: 36px; flex-wrap: wrap; }
.filter-btn {
  padding: 5px 14px; border: 1px solid var(--border2); background: none;
  font-family: var(--font-body); font-size: 10px; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted);
  cursor: crosshair; transition: all 0.15s;
}
.filter-btn:hover { border-color: var(--amber-dim); color: var(--amber); }
.filter-btn.active { border-color: var(--amber); color: var(--amber); background: rgba(200,134,46,0.08); }

.courses-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1px; background: var(--border);
}

.course-card {
  background: var(--bg2); text-decoration: none; color: inherit;
  display: flex; flex-direction: column; transition: background 0.15s;
}
.course-card:hover { background: var(--bg3); }

.course-card-thumb {
  width: 100%; aspect-ratio: 16/9; background: var(--bg); overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  border-bottom: 1px solid var(--border);
}
.course-card-thumb img { width: 100%; height: 100%; object-fit: cover; }
.course-card-thumb-placeholder {
  font-size: 9px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted);
}

.course-card-body { padding: 16px 20px 20px; }

.course-card-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; flex-wrap: wrap; }
.course-card-level {
  font-size: 9px; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--amber-dim); border: 1px solid var(--border2); padding: 2px 8px;
}
.course-card-count { font-size: 11px; font-weight: 300; color: var(--muted); }
.course-card-instructor { font-size: 11px; font-weight: 600; letter-spacing: 0.06em; color: var(--muted); }

.course-card-title {
  font-family: var(--font-display); font-size: 18px; letter-spacing: 0.02em;
  text-transform: uppercase; margin-bottom: 4px;
}
.course-card-desc { font-size: 12px; font-weight: 300; color: var(--muted); line-height: 1.5; }

.empty-state { text-align: center; padding: 80px 0; }
.empty-state p { font-size: 13px; color: var(--muted); }

@media (max-width: 600px) {
  .page { padding: 36px 24px 64px; }
  .courses-grid { grid-template-columns: 1fr; }
}