/**
 * Novel Theme - Sidebar Styles
 * Layout, sidebar, plan navigation, TOC
 */

/* Layout */
.layout {
  display: flex;
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  min-width: 200px;
  max-width: 480px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 1.5rem;
  overflow-y: auto;
  position: fixed;
  top: var(--header-height);
  bottom: 0;
  left: 0;
  transform: translateX(0);
  transition: transform 0.3s ease;
}

/* Custom scrollbar */
.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Resize handle */
.sidebar-resize-handle {
  position: absolute;
  top: 0;
  right: -3px;
  bottom: 0;
  width: 6px;
  cursor: col-resize;
  background: transparent;
  z-index: 10;
  transition: background 0.2s;
}

.sidebar-resize-handle:hover,
.sidebar-resize-handle.dragging {
  background: var(--accent);
}

.sidebar.hidden {
  transform: translateX(-100%);
}

/* Plan Navigation */
.plan-nav {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.plan-title {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.plan-icon {
  font-size: 1rem;
}

.phase-list {
  list-style: none;
}

.phase-item {
  margin-bottom: 0.25rem;
}

/* Inline section items (anchors within same doc) - indented with visual distinction */
.phase-item.inline-section {
  margin-left: 0.75rem;
  position: relative;
}

.phase-item.inline-section::before {
  content: '';
  position: absolute;
  left: -0.5rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
  border-radius: 1px;
}

.phase-item a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  border-radius: 6px;
  transition: all 0.2s;
}

/* Inline sections have subtler styling */
.phase-item.inline-section a {
  font-size: 0.8125rem;
  padding: 0.375rem 0.625rem;
  background: var(--bg-secondary);
  border: 1px solid transparent;
}

.phase-item.inline-section a:hover {
  background: var(--bg-tertiary);
  border-color: var(--border);
}

.phase-item a:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.phase-item.active a {
  background: var(--accent);
  color: white;
}

.phase-item.inline-section.active a {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* Type indicator icon */
.phase-type-icon {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  opacity: 0.6;
}

.phase-item.active .phase-type-icon {
  opacity: 1;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-dot.pending { background: #d4a574; }
.status-dot.in-progress { background: #4a90d9; }
.status-dot.completed, .status-dot.done { background: #5cb85c; }
.status-dot.overview { background: #8b4513; }

/* Unavailable/Planned phases */
.phase-item.unavailable {
  opacity: 0.6;
}

.phase-item.unavailable .phase-link-disabled {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  border-radius: 6px;
  cursor: not-allowed;
  background: var(--bg-tertiary);
  border: 1px dashed var(--border);
}

.phase-item.unavailable .status-dot {
  background: var(--text-muted);
  opacity: 0.5;
}

.unavailable-badge,
.nav-badge {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  background: var(--text-muted);
  color: var(--bg-primary);
  margin-left: auto;
}

/* Nav footer unavailable state */
.nav-unavailable {
  opacity: 0.5;
  cursor: not-allowed;
  border-style: dashed !important;
}

.nav-unavailable .nav-badge {
  font-size: 0.6rem;
  margin: 0 0.25rem;
}

/* Phase accordion */
.phase-group {
  margin-bottom: 0.5rem;
}

.phase-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.625rem 0.75rem;
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  transition: background 0.2s;
}

.phase-header:hover {
  background: var(--bg-tertiary);
}

.phase-chevron {
  font-size: 0.625rem;
  color: var(--text-muted);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.phase-group.collapsed .phase-chevron {
  transform: rotate(-90deg);
}

.phase-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Progress badges */
.phase-badge {
  font-size: 0.75rem;
  padding: 0.125rem 0.375rem;
  border-radius: 4px;
  font-weight: 600;
  flex-shrink: 0;
}

.badge-done {
  background: #d4edda;
  color: #155724;
}

[data-theme="dark"] .badge-done {
  background: #1e3a2f;
  color: #75d49b;
}

.badge-progress {
  background: #cce5ff;
  color: #004085;
}

[data-theme="dark"] .badge-progress {
  background: #1a3a5c;
  color: #6db3f2;
}

.badge-pending {
  background: var(--bg-tertiary);
  color: var(--text-muted);
}

/* Phase items container — visible by default, collapsed state hides */
.phase-items {
  list-style: none;
  padding-left: 1.25rem;
  margin-top: 0.25rem;
  transition: max-height 0.3s ease, opacity 0.2s ease;
}

.phase-group.collapsed .phase-items {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  margin-top: 0;
}

/* TOC */
.toc-section {
  margin-top: 1rem;
}

.toc-title {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.toc-list {
  list-style: none;
}

.toc-list li {
  margin-bottom: 0.25rem;
}

.toc-list a {
  display: block;
  padding: 0.25rem 0;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.toc-list a:hover {
  color: var(--accent);
}