/* Global styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  display: flex;
  height: 100vh;
  overflow: hidden;
  background: transparent; /* Use the mesh on body from theme.css */
}

#sidebar {
  width: 260px;
  min-width: 260px;
  background: var(--sidebar-bg);
  backdrop-filter: var(--backdrop-blur-md);
  -webkit-backdrop-filter: var(--backdrop-blur-md);
  color: var(--sidebar-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-right: 1px solid var(--sidebar-border);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1), min-width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.sidebar-collapsed #sidebar {
  width: 0;
  min-width: 0;
}

#sidebar-header {
  padding: 16px;
  background: var(--sidebar-header-bg);
  border-bottom: 1px solid var(--sidebar-border);
}

#sidebar-header h1 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

#sidebar-actions {
  display: flex;
  gap: 8px;
}

#btn-add {
  flex: 1;
  padding: 8px;
  background: var(--sidebar-btn-bg);
  color: var(--sidebar-accent);
  border: 1px solid var(--sidebar-btn-border);
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: background 0.15s;
}
#btn-add:hover {
  background: var(--sidebar-btn-hover);
}

#btn-split,
#btn-theme {
  padding: 8px;
  background: var(--sidebar-btn-bg);
  color: var(--sidebar-accent);
  border: 1px solid var(--sidebar-btn-border);
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}
#btn-split:hover,
#btn-theme:hover {
  background: var(--sidebar-btn-hover);
}
#btn-split.active {
  background: var(--accent);
  border-color: var(--sidebar-accent);
  color: #fff;
}

#spec-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.spec-item {
  display: flex;
  align-items: center;
  padding: 9px 10px;
  border-radius: 4px;
  cursor: pointer;
  margin-bottom: 3px;
  transition: background 0.12s;
  gap: 6px;
}
.spec-item:hover,
.spec-item:focus-visible {
  background: var(--sidebar-item-hover);
  outline: none;
}
.spec-item:focus-visible {
  outline: 2px solid var(--sidebar-accent);
  outline-offset: -2px;
}
.spec-item.active {
  background: var(--sidebar-item-active);
}

.spec-item-name {
  flex: 1;
  font-size: 13px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.spec-item-actions {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.12s;
}
.spec-item:hover .spec-item-actions,
.spec-item.active .spec-item-actions {
  opacity: 1;
}

.icon-btn {
  background: none;
  border: none;
  color: var(--icon-btn);
  cursor: pointer;
  padding: 2px 5px;
  border-radius: 4px;
  font-size: 13px;
  line-height: 1;
  transition: color 0.12s, background 0.12s;
}
.icon-btn:hover {
  color: var(--text);
  background: var(--icon-btn-hover-bg);
}
.icon-btn.delete:hover {
  color: #ff6b6b;
}

.spec-item-badges {
  display: flex;
  gap: 4px;
}

.badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 3px;
  font-size: 9px;
  font-weight: 800;
  color: #fff;
  user-select: none;
}

.badge.left {
  background: #2b6cb0;
}

.badge.right {
  background: #c53030;
}

#empty-state {
  padding: 20px 16px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.5;
}