/* Course Finder — Autocomplete + Detail Panel */
:root {
  --cs-green: #0b704e;
  --cs-green-light: #e8f7f0;
  --cs-green-mid: #31c48d;
  --cs-border: #e2e8f0;
  --cs-text: #1a1a2e;
  --cs-muted: #64748b;
  --cs-bg: #f8fafc;
}

/* ── Section wrapper ─────────────────────────────────────────────────────── */
.course-finder {
  max-width: 720px;
  margin: 0 auto;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ── Search box ──────────────────────────────────────────────────────────── */
.cs-search-wrap {
  position: relative;
}

.cs-input-row {
  display: flex;
  align-items: center;
  background: #fff;
  border: 2px solid var(--cs-border);
  border-radius: 12px;
  padding: 0 16px;
  gap: 10px;
  transition: border-color .2s, box-shadow .2s;
}

.cs-input-row:focus-within {
  border-color: var(--cs-green);
  box-shadow: 0 0 0 4px rgba(11, 112, 78, .1);
}

.cs-input-row svg {
  width: 20px;
  height: 20px;
  stroke: var(--cs-muted);
  fill: none;
  stroke-width: 2;
  flex-shrink: 0;
}

.cs-input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 16px;
  color: var(--cs-text);
  padding: 16px 0;
  background: transparent;
}

.cs-input::placeholder {
  color: #a0aec0;
}

.cs-spinner {
  width: 18px;
  height: 18px;
  border: 2.5px solid #e2e8f0;
  border-top-color: var(--cs-green);
  border-radius: 50%;
  animation: cs-spin .65s linear infinite;
  display: none;
  flex-shrink: 0;
}

.cs-spinner.visible { display: block; }

@keyframes cs-spin { to { transform: rotate(360deg); } }

/* ── Dropdown ────────────────────────────────────────────────────────────── */
.cs-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: #fff;
  border: 1.5px solid var(--cs-border);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .1);
  overflow: hidden;
  z-index: 50;
  display: none;
}

.cs-dropdown.open { display: block; }

.cs-item {
  padding: 12px 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid #f1f5f9;
  transition: background .1s;
}

.cs-item:last-child { border-bottom: none; }

.cs-item:hover,
.cs-item.focused {
  background: var(--cs-green-light);
}

.cs-item-code {
  font-family: monospace;
  font-size: 13px;
  font-weight: 700;
  color: var(--cs-green);
  background: var(--cs-green-light);
  padding: 2px 8px;
  border-radius: 5px;
  white-space: nowrap;
  flex-shrink: 0;
}

.cs-item-title {
  font-size: 14px;
  color: var(--cs-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cs-empty {
  padding: 20px 18px;
  text-align: center;
  color: var(--cs-muted);
  font-size: 14px;
}

/* ── Detail card ─────────────────────────────────────────────────────────── */
.cs-detail {
  margin-top: 20px;
  background: #fff;
  border: 1.5px solid var(--cs-border);
  border-radius: 14px;
  overflow: hidden;
  display: none;
  animation: cs-fadein .2s ease;
}

.cs-detail.visible { display: block; }

@keyframes cs-fadein {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.cs-detail-header {
  background: var(--cs-green);
  color: #fff;
  padding: 20px 24px;
}

.cs-detail-code {
  font-family: monospace;
  font-size: 13px;
  opacity: .8;
  margin-bottom: 4px;
}

.cs-detail-title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
}

.cs-detail-body {
  padding: 20px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.cs-field-group { }

.cs-field-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--cs-muted);
  margin-bottom: 3px;
}

.cs-field-value {
  font-size: 14px;
  color: var(--cs-text);
  font-weight: 500;
}

.cs-field-value.empty { color: var(--cs-muted); font-weight: 400; }

.cs-detail-desc {
  grid-column: 1 / -1;
  border-top: 1px solid var(--cs-border);
  padding-top: 16px;
}

.cs-detail-desc .cs-field-value {
  font-size: 14px;
  line-height: 1.6;
  font-weight: 400;
  color: #374151;
}

.cs-loading-detail {
  padding: 32px;
  text-align: center;
  color: var(--cs-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.cs-loading-detail .cs-spinner {
  display: block;
}

/* ── Mobile ──────────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .cs-input { font-size: 15px; padding: 14px 0; }
  .cs-detail-body { grid-template-columns: 1fr; }
  .cs-detail-title { font-size: 17px; }
}