/**
 * 侧栏导航
 * 结构由 sidebar.js 动态生成：
 *   .sidebar-header  > .sidebar-logo > (.sidebar-logo-icon, .sidebar-logo-text)
 *   .sidebar-nav     > .sidebar-nav-item*
 *   .sidebar-footer  > .sidebar-nav-item.theme-toggle / .sidebar-credits-item / .sidebar-auth-item
 * 图标: Tabler Icons (MIT)
 */

/* ===== 侧栏容器 ===== */
.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  overflow: hidden;
  user-select: none;
  transition: width var(--t) var(--ease), min-width var(--t) var(--ease);
}

/* ===== 头部 ===== */
.sidebar-header {
  flex-shrink: 0;
  padding: 15px 16px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.sidebar-logo-img {
  display: block;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: var(--r-sm);
  object-fit: cover;
  border: 1px solid var(--border);
}

.sidebar-logo-text {
  min-width: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== 导航区 ===== */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 8px;
}

.sidebar-nav-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--r-sm);
  cursor: pointer;
  color: var(--text-2);
  font-size: 13.5px;
  white-space: nowrap;
  transition: background var(--t) var(--ease), color var(--t) var(--ease);
}

.sidebar-nav-item + .sidebar-nav-item {
  margin-top: 2px;
}

.sidebar-nav-item svg {
  flex-shrink: 0;
  opacity: 0.8;
}

.sidebar-nav-item span {
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-nav-item:hover {
  background: var(--surface-2);
  color: var(--text);
}

.sidebar-nav-item.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 500;
}

.sidebar-nav-item.active svg {
  opacity: 1;
}

/* 激活指示条 */
.sidebar-nav-item.active::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 50%;
  width: 3px;
  height: 16px;
  transform: translateY(-50%);
  border-radius: 0 3px 3px 0;
  background: var(--accent);
}

/* ===== 底部区 ===== */
.sidebar-footer {
  flex-shrink: 0;
  padding: 8px;
  border-top: 1px solid var(--border);
}

/* 主题切换：右侧显示当前模式 */
.theme-state {
  margin-left: auto;
  flex-shrink: 0;
  font-size: 11px;
  color: var(--text-3);
}

.theme-state::after {
  content: '暗色';
}

:root[data-theme='light'] .theme-state::after {
  content: '浅色';
}

/* 积分入口 */
.sidebar-credits-item {
  color: var(--text);
}

/* 账号入口头像 */
.sidebar-auth-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-3);
  overflow: hidden;
}

.sidebar-auth-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sidebar-credits-value {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}

/* ===== 展开/收起按钮 ===== */
.sidebar-toggle {
  position: relative;
  z-index: 10;
  align-self: center;
  flex-shrink: 0;
  width: 18px;
  height: 40px;
  min-width: 0;
  margin: 0 -9px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  color: var(--text-3);
  cursor: pointer;
  transition: color var(--t) var(--ease), background var(--t) var(--ease),
    border-color var(--t) var(--ease);
}

.sidebar-toggle:hover {
  color: var(--accent);
  background: var(--surface-2);
  border-color: var(--border-2);
}

/* ============================================================
 * 收起态：仅图标
 * ============================================================ */

.layout.sidebar-collapsed .sidebar {
  width: var(--sidebar-w-collapsed);
  min-width: var(--sidebar-w-collapsed);
}

.layout.sidebar-collapsed .sidebar-header {
  padding: 15px 0;
}

.layout.sidebar-collapsed .sidebar-logo {
  justify-content: center;
}

.layout.sidebar-collapsed .sidebar-logo-text,
.layout.sidebar-collapsed .theme-state {
  display: none;
}

.layout.sidebar-collapsed .sidebar-nav-item {
  justify-content: center;
  padding: 9px 0;
}

.layout.sidebar-collapsed .sidebar-nav-item > span {
  display: none;
}

.layout.sidebar-collapsed .sidebar-nav-item.active::before {
  display: none;
}

/* 收起态：积分项图标在上、数值在下 */
.layout.sidebar-collapsed .sidebar-credits-item {
  flex-direction: column;
  gap: 0;
  padding: 6px 0;
}

.layout.sidebar-collapsed .sidebar-credits-item > span {
  display: block;
  max-width: 100%;
  font-size: 10.5px;
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
}