/* 
 * Component Library
 * Reusable UI components with consistent styling
 */

/* ===== ENHANCED HEADER & NAVIGATION ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--bg-glass);
  backdrop-filter: blur(12px) saturate(180%);
  border-bottom: 1px solid var(--border-primary);
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--bg-gradient-primary);
  opacity: 0.6;
}

.site-title {
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-primary);
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--bg-gradient-primary);
  opacity: 0;
  transition: all var(--transition-base);
  z-index: -1;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.nav-link:hover::before {
  left: 0;
  opacity: 0.1;
}

.nav-link.active {
  color: var(--text-inverse);
  background: var(--bg-gradient-primary);
  border-color: transparent;
  box-shadow: var(--shadow-colored);
  transform: translateY(-1px);
}

.nav-link.active::before {
  opacity: 0;
}

.nav-link .icon {
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.nav-link:hover .icon,
.nav-link.active .icon {
  opacity: 1;
}

/* ===== ENHANCED BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-base);
}

.btn:hover:not(:disabled) {
  background: var(--bg-secondary);
  border-color: var(--border-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn:hover:not(:disabled)::before {
  left: 100%;
}

.btn:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: none;
}

.btn:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Enhanced Button variants */
.btn.primary {
  background: var(--bg-gradient-primary);
  border-color: transparent;
  color: var(--text-inverse);
  box-shadow: var(--shadow-colored);
}

.btn.primary:hover:not(:disabled) {
  background: var(--bg-gradient-primary);
  border-color: transparent;
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  transform: translateY(-3px);
}

.btn.success {
  background: var(--status-success);
  border-color: var(--status-success);
  color: var(--text-inverse);
}

.btn.danger {
  background: var(--status-danger);
  border-color: var(--status-danger);
  color: var(--text-inverse);
}

.btn.ghost {
  background: transparent;
  border-color: transparent;
}

.btn.ghost:hover:not(:disabled) {
  background: var(--bg-secondary);
  border-color: var(--border-primary);
}

/* Button sizes */
.btn.sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  gap: var(--space-1);
}

.btn.lg {
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
}

.btn.icon-only {
  padding: var(--space-2);
  aspect-ratio: 1;
}

.btn.icon-only.sm {
  padding: var(--space-1);
}

/* ===== ENHANCED PANELS & CARDS ===== */
.panel {
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-base);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
}

.panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--bg-gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.panel:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-primary);
}

.panel:hover::before {
  opacity: 1;
}

.panel.interactive {
  cursor: pointer;
}

.panel.interactive:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.panel.tall {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4);
  border-bottom: 1px solid var(--border-primary);
  background: var(--bg-secondary);
}

.panel-title {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  margin: 0;
}

.panel-body {
  padding: var(--space-4);
  flex: 1;
  min-height: 0;
}

.panel-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--border-primary);
  background: var(--bg-secondary);
}

/* ===== FORMS ===== */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-base);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-primary-light);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
  font-family: 
    "JetBrains Mono",
    "Fira Code",
    ui-monospace, 
    SFMono-Regular, 
    monospace;
}

.form-error {
  color: var(--status-danger);
  font-size: var(--font-size-xs);
  margin-top: var(--space-1);
}

/* ===== CODE EDITOR ===== */
.code-editor {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-base);
  background: var(--bg-tertiary);
  overflow: hidden;
  font-family: 
    "JetBrains Mono",
    "Fira Code",
    ui-monospace, 
    SFMono-Regular, 
    monospace;
}

.code-editor.focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-primary-light);
}

.line-numbers {
  background: var(--bg-secondary);
  color: var(--text-tertiary);
  padding: var(--space-3) var(--space-2);
  border-right: 1px solid var(--border-primary);
  text-align: right;
  min-width: 4ch;
  user-select: none;
  white-space: pre;
  line-height: 1.55;
  font-size: var(--font-size-xs);
  overflow: hidden;
}

.code-editor textarea {
  border: none;
  border-radius: 0;
  padding: var(--space-3);
  outline: none;
  resize: none;
  height: 50vh;
  line-height: 1.55;
  font-size: var(--font-size-xs);
  background: transparent;
  color: var(--text-primary);
  font-family: inherit;
}

.code-editor textarea::placeholder {
  color: var(--text-tertiary);
}

/* CodeMirror container */
.code-editor-container {
  position: relative;
  border-radius: var(--radius-base);
  overflow: hidden;
  min-height: 300px;
}

/* CodeMirror theme integration */
.cm-editor {
  background: var(--bg-tertiary) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border-primary) !important;
  border-radius: var(--radius-base) !important;
}

.cm-editor.cm-focused {
  border-color: var(--border-focus) !important;
  box-shadow: 0 0 0 3px var(--accent-primary-light) !important;
}

.cm-content {
  background: var(--bg-tertiary) !important;
  color: var(--text-primary) !important;
  caret-color: var(--text-primary) !important;
}

.cm-gutters {
  background: var(--bg-secondary) !important;
  border-right: 1px solid var(--border-primary) !important;
}

.cm-lineNumbers .cm-gutterElement {
  color: var(--text-tertiary) !important;
}

.cm-activeLine {
  background: var(--accent-primary-light) !important;
}

.cm-selectionBackground {
  background: var(--accent-primary-light) !important;
}

.cm-cursor {
  border-left-color: var(--text-primary) !important;
}

/* JSON syntax highlighting */
.cm-string {
  color: #059669 !important;
}

.cm-number {
  color: var(--accent-primary) !important;
}

.cm-keyword {
  color: #d97706 !important;
}

.cm-atom {
  color: #9ca3af !important;
}

/* Linting */
.cm-diagnostic-error {
  border-bottom: 2px solid var(--status-danger) !important;
}

.cm-diagnostic-warning {
  border-bottom: 2px solid var(--status-warning) !important;
}

.cm-tooltip {
  background: var(--bg-elevated) !important;
  border: 1px solid var(--border-primary) !important;
  border-radius: var(--radius-base) !important;
  color: var(--text-primary) !important;
  box-shadow: var(--shadow-lg) !important;
}

/* Fallback editor styles */
.fallback-editor {
  display: flex;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-base);
  background: var(--bg-tertiary);
  overflow: hidden;
  font-family: "JetBrains Mono", "Fira Code", ui-monospace, monospace;
  font-size: 13px;
  line-height: 1.5;
}

.fallback-line-numbers {
  background: var(--bg-secondary);
  color: var(--text-tertiary);
  padding: 12px 8px;
  border-right: 1px solid var(--border-primary);
  text-align: right;
  min-width: 4ch;
  user-select: none;
  white-space: pre;
  overflow: hidden;
}

.fallback-textarea {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-primary);
  padding: 12px;
  resize: none;
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

.fallback-textarea::placeholder {
  color: var(--text-tertiary);
}

/* ===== TOOLBAR ===== */
.toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1);
  border-radius: var(--radius-base);
  background: var(--bg-secondary);
}

.toolbar-separator {
  width: 1px;
  height: var(--space-6);
  background: var(--border-primary);
  margin: 0 var(--space-2);
}

/* ===== SEARCH ===== */
.search-input {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-base);
  background: var(--bg-tertiary);
  transition: all var(--transition-fast);
}

.search-input:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-primary-light);
}

.search-input input {
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  flex: 1;
  min-width: 0;
}

.search-input input::placeholder {
  color: var(--text-tertiary);
}

.search-count {
  color: var(--text-tertiary);
  font-size: var(--font-size-xs);
  min-width: 4ch;
  text-align: center;
}

/* ===== STATUS & FEEDBACK ===== */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-base);
  border: 1px solid;
  margin: var(--space-4) 0;
}

.alert.success {
  background: var(--surface-success);
  border-color: var(--status-success);
  color: var(--status-success);
}

.alert.danger {
  background: var(--surface-danger);
  border-color: var(--status-danger);
  color: var(--status-danger);
}

.alert.warning {
  background: var(--surface-warning);
  border-color: var(--status-warning);
  color: var(--status-warning);
}

.toast {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-tooltip);
  max-width: 400px;
  padding: var(--space-4);
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-base);
  box-shadow: var(--shadow-lg);
  animation: slideDown var(--transition-base);
}

.loading-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-primary);
  border-top-color: var(--accent-primary);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

/* ===== LAYOUT ===== */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.container.wide {
  max-width: var(--container-2xl);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  align-items: stretch;
}

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
}

.splitter {
  cursor: col-resize;
  background: var(--border-primary);
  width: 6px;
  transition: background var(--transition-fast);
}

.splitter:hover {
  background: var(--accent-primary);
}

.splitter.vertical {
  cursor: row-resize;
  height: 6px;
  width: auto;
}

/* ===== ICONS ===== */
.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon svg {
  width: 1em;
  height: 1em;
  fill: none;
  stroke: currentColor;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .site-header {
    flex-direction: column;
    gap: var(--space-2);
  }
  
  .site-nav {
    order: -1;
    width: 100%;
    justify-content: center;
  }
  
  .grid-2 {
    grid-template-columns: 1fr;
  }
  
  .panel.tall {
    min-height: 60vh;
  }
  
  .code-editor textarea {
    height: 40vh;
  }
  
  .nav-link span {
    display: none;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 var(--space-2);
  }
  
  .toolbar {
    gap: var(--space-1);
  }
  
  .btn {
    padding: var(--space-2) var(--space-3);
  }
  
  .panel-body {
    padding: var(--space-3);
  }
}