/* === Top panel =============================================================== */
.top-panel {
  background: var(--c-primary-dk);
  color: #fff;
  padding: 0 16px;
  height: 56px;
  min-height: 56px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 2px 6px rgba(0,0,0,.25);
  flex-wrap: nowrap;
  overflow-x: auto;
  flex-shrink: 0;
  z-index: 100;
}
.top-panel-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .4px;
  white-space: nowrap;
  margin-right: 8px;
  flex-shrink: 0;
}
.top-panel-sep {
  width: 1px;
  height: 24px;
  background: rgba(255,255,255,.2);
  flex-shrink: 0;
}
.top-panel label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: rgba(255,255,255,.75);
  white-space: nowrap;
  flex-shrink: 0;
}
.top-panel input {
  width: 100px;
  height: 28px;
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--r-sm);
  background: rgba(255,255,255,.12);
  color: #fff;
  padding: 0 7px;
  font-size: 12px;
}
.top-panel input::placeholder { color: rgba(255,255,255,.45); }
.top-panel input:focus {
  outline: none;
  border-color: rgba(255,255,255,.65);
  background: rgba(255,255,255,.20);
}
.top-sel {
  height: 28px;
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--r-sm);
  background: rgba(255,255,255,.12);
  color: #fff;
  padding: 0 6px;
  font-size: 12px;
}
.top-sel:focus { outline: none; border-color: rgba(255,255,255,.65); }
.top-sel option { background: var(--c-primary-dk); color: #fff; }
.top-check {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: rgba(255,255,255,.85);
  cursor: pointer;
  white-space: nowrap;
}
.top-check input[type=checkbox] {
  width: 14px; height: 14px;
  accent-color: var(--c-teal);
  cursor: pointer;
}
.btn-test {
  flex-shrink: 0;
  padding: 4px 12px;
  background: var(--c-teal);
  color: #fff;
  border: none;
  border-radius: var(--r-sm);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: .3px;
  transition: background .15s;
}
.btn-test:hover { background: #00695c; }

.btn-validate {
  flex-shrink: 0;
  padding: 4px 10px;
  line-height: 1.4;
  background: #fff8e1;
  color: #e65100;
  border: 1px solid #ffcc80;
  border-radius: var(--r-sm);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: .3px;
  transition: background .15s;
}
.btn-validate:hover { background: #ffe0b2; }

.preview-mode-btn {
  flex-shrink: 0;
  padding: 4px 10px;
  line-height: 1.4;
  background: #f0f4f8;
  color: #374151;
  border: 1px solid #d1d5db;
  border-radius: var(--r-sm);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: .3px;
  transition: background .15s, color .15s, border-color .15s;
  white-space: nowrap;
}
.preview-mode-btn:hover { background: #e5e7eb; }
.preview-mode-btn.btn-fhir--active {
  background: #1e293b;
  color: #f8fafc;
  border-color: #1e293b;
}
.preview-mode-btn.btn-fhir--active:hover {
  background: #334155;
  border-color: #334155;
}
/* Active item checkmark in preview-mode dropdown */
.load-menu-item--checked::before { content: '\2713\00A0'; }

.top-github-link {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  font-weight: 600;
  color: var(--c-text-2);
  text-decoration: none;
  padding: 4px 8px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  background: var(--c-surface);
  margin-left: 4px;
  white-space: nowrap;
  transition: color .15s, background .15s;
}
.top-github-link:hover { color: var(--c-text); background: #e8eaed; }

.right-panel-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}
.right-panel-header-top .section-title { margin-bottom: 0; }
.right-panel-header-top .section-title [data-testid="preview-panel-title"]:focus { outline: none; }
.preview-header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* === Two-column layout ======================================================= */
.layout {
  display: flex;
  flex-direction: row;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}
.panel-resizer {
  width: 5px;
  flex-shrink: 0;
  cursor: col-resize;
  background: var(--c-border);
  transition: background 0.15s;
  position: relative;
  z-index: 10;
}
.panel-resizer:hover,
.panel-resizer.resizing { background: var(--c-primary); }
.left-panel {
  width: 470px;
  min-width: 200px;
  max-width: 70vw;
  flex-shrink: 0;
  background: var(--c-surface);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.left-panel-header {
  padding: 10px 14px 8px;
  flex-shrink: 0;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.left-panel-header-right {
  display: flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
}
.top-panel-copyright {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-size: 10px;
  color: rgba(255,255,255,.55);
  white-space: nowrap;
}
.top-panel-copyright span { }
.top-panel-copyright a {
  color: rgba(255,255,255,.55);
  text-decoration: none;
}
.top-panel-copyright a:hover { color: #fff; text-decoration: underline; }
.top-panel-github-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: rgba(255,255,255,.80) !important;
  font-weight: 600;
  font-size: 11px;
}
.top-panel-github-link:hover { color: #fff !important; }

.top-panel-auth {
  margin-left: 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}
.left-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 10px 14px 14px;
}
.right-panel {
  flex: 1;
  min-width: 0;
  background: var(--c-bg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.right-panel-header {
  padding: 14px 14px 8px;
  flex-shrink: 0;
  border-bottom: 1px solid var(--c-border);
}
.right-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 10px 14px 50px;
}

/* === Section titles ========================================================== */
.section-title {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--c-text-2);
  margin-bottom: 10px;
}
.left-panel-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.loaded-file-name-wrap {
  display: inline-flex;
  align-items: center;
  gap: 3px;
}
.loaded-file-name {
  display: inline;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
  color: var(--c-accent);
}
.clear-form-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--c-text-2);
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  opacity: 0.6;
  transition: opacity 0.15s, background 0.15s;
}
.clear-form-btn:hover {
  opacity: 1;
  background: var(--c-err);
  color: #fff;
}