/* ============================================
   Shared UI Components
   ============================================ */

/* Panels */
.panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-muted);
}

.panel-title {
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Code blocks */
pre {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 16px;
  overflow-x: auto;
  margin-bottom: 16px;
  font-size: 0.85rem;
  line-height: 1.5;
}

pre code {
  background: none;
  padding: 0;
  border: none;
  font-size: inherit;
}

code {
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.85em;
  color: var(--accent-amber);
}

/* Highlight.js overrides */
.hljs {
  background: var(--bg-tertiary) !important;
  color: var(--text-primary) !important;
  padding: 16px !important;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-green {
  background: rgba(63, 185, 80, 0.15);
  color: var(--accent-green);
}

.badge-amber {
  background: rgba(210, 153, 34, 0.15);
  color: var(--accent-amber);
}

.badge-red {
  background: rgba(248, 81, 73, 0.15);
  color: var(--accent-red);
}

.badge-blue {
  background: rgba(88, 166, 255, 0.15);
  color: var(--accent-blue);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-green-dim);
  color: var(--text-primary);
  border: 1px solid var(--accent-green);
}

.btn-primary:hover {
  background: var(--accent-green);
  color: #000;
}

.btn-primary:active {
  background: var(--accent-green);
  color: #000;
  transform: scale(0.97);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--text-muted);
}

.btn-secondary:active {
  background: var(--bg-hover);
  transform: scale(0.97);
}

.btn-danger {
  background: rgba(248, 81, 73, 0.15);
  color: var(--accent-red);
  border: 1px solid rgba(248, 81, 73, 0.3);
}

.btn-danger:hover {
  background: rgba(248, 81, 73, 0.25);
}

.btn-danger:active {
  background: rgba(248, 81, 73, 0.25);
  transform: scale(0.97);
}

.btn-sm {
  padding: 4px 10px;
  font-size: 0.8rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Tables */
.table-wrapper {
  overflow-x: auto;
  margin-bottom: 16px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

th, td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-muted);
}

th {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

td {
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

tr:hover td {
  background: var(--bg-tertiary);
}

/* Input fields */
.input-group {
  margin-bottom: 12px;
}

.input-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.input-field {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  transition: border-color var(--transition-fast);
}

.input-field:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.15);
}

textarea.input-field {
  resize: vertical;
  min-height: 80px;
}

select.input-field {
  cursor: pointer;
  appearance: auto;
}

/* Success / Error banners */
.banner {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  display: none;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.banner.visible {
  display: flex;
}

.banner-success {
  background: rgba(63, 185, 80, 0.12);
  border: 1px solid rgba(63, 185, 80, 0.3);
  color: var(--accent-green);
}

.banner-error {
  background: rgba(248, 81, 73, 0.12);
  border: 1px solid rgba(248, 81, 73, 0.3);
  color: var(--accent-red);
}

.banner-info {
  background: rgba(88, 166, 255, 0.12);
  border: 1px solid rgba(88, 166, 255, 0.3);
  color: var(--accent-blue);
}

.banner-warning {
  background: rgba(210, 153, 34, 0.12);
  border: 1px solid rgba(210, 153, 34, 0.3);
  color: var(--accent-amber);
}

/* Loading spinner */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-default);
  border-top-color: var(--accent-green);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

.loading-indicator {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Tabs */
.tab-bar {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--border-default);
  margin-bottom: 16px;
  overflow-x: auto;
}

.tab-btn {
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--accent-green);
  border-bottom-color: var(--accent-green);
}

/* Tooltip */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 8px;
  background: var(--text-primary);
  color: var(--bg-primary);
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.tooltip:hover::after {
  opacity: 1;
}

/* Flex/Grid utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: 8px; }
.gap-md { gap: 16px; }
.gap-lg { gap: 24px; }
.mt-sm { margin-top: 8px; }
.mt-md { margin-top: 16px; }
.mt-lg { margin-top: 24px; }
.mb-sm { margin-bottom: 8px; }
.mb-md { margin-bottom: 16px; }

/* Theory section styling */
.theory-section {
  margin-bottom: 32px;
}

.theory-section ul, .theory-section ol {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 12px;
}

.theory-section ol {
  list-style: decimal;
}

.theory-section li {
  color: var(--text-secondary);
  margin-bottom: 6px;
  line-height: 1.6;
}

.theory-section li strong {
  color: var(--text-primary);
}

/* Callout box */
.callout {
  padding: 16px;
  border-radius: var(--radius-md);
  border-left: 3px solid;
  margin-bottom: 16px;
}

.callout-info {
  background: rgba(88, 166, 255, 0.08);
  border-color: var(--accent-blue);
}

.callout-warning {
  background: rgba(210, 153, 34, 0.08);
  border-color: var(--accent-amber);
}

.callout-danger {
  background: rgba(248, 81, 73, 0.08);
  border-color: var(--accent-red);
}

.callout-success {
  background: rgba(63, 185, 80, 0.08);
  border-color: var(--accent-green);
}

/* Light theme: override highlight.js dark styles */
[data-theme="light"] .hljs {
  background: var(--bg-tertiary) !important;
  color: #1f2328 !important;
}
[data-theme="light"] .hljs-keyword,
[data-theme="light"] .hljs-selector-tag { color: #cf222e; }
[data-theme="light"] .hljs-string,
[data-theme="light"] .hljs-attr { color: #0a3069; }
[data-theme="light"] .hljs-number,
[data-theme="light"] .hljs-literal { color: #0550ae; }
[data-theme="light"] .hljs-comment { color: #6e7781; }
[data-theme="light"] .hljs-title,
[data-theme="light"] .hljs-function { color: #8250df; }
[data-theme="light"] .hljs-built_in { color: #0550ae; }
[data-theme="light"] .hljs-type,
[data-theme="light"] .hljs-class { color: #953800; }
[data-theme="light"] .hljs-meta { color: #0550ae; }
[data-theme="light"] .hljs-variable { color: #953800; }

/* Light theme: inline code */
[data-theme="light"] code {
  color: #953800;
}