/* 主布局与侧边栏：Layout、Sidebar、导航、全局搜索 */
/* ══════════════════════════════════════════════════════
   SIDEBAR — 深色沉稳 · 层级分明 · 渐变徽标
   ══════════════════════════════════════════════════════ */
/* Layout */
.sidebar {
  width: 264px; flex-shrink: 0;
  background: linear-gradient(180deg, var(--surface) 0%, color-mix(in srgb, var(--surface) 88%, var(--bg)) 100%);
  border-right: 1px solid var(--hairline, var(--border));
  display: flex; flex-direction: column;
}
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; min-height: 0; }

/* ── 品牌区 ── */
.sidebar-brand {
  display: flex; align-items: center; gap: 11px;
  padding: 18px 20px 14px;
}
.sidebar-brand-icon {
  width: 34px; height: 34px; border-radius: 10px; flex-shrink: 0;
  background: var(--grad-primary);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  box-shadow: 0 4px 14px -2px color-mix(in srgb, var(--primary) 50%, transparent),
              inset 0 1px 0 rgba(255,255,255,0.28);
}
.sidebar-brand-icon svg { width: 19px; height: 19px; }
.sidebar-brand-text {
  font-size: 16.5px; font-weight: 800; letter-spacing: -0.2px;
  background: linear-gradient(120deg, var(--text) 30%, var(--primary-hover) 95%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

/* ── 用户卡 ── */
.sidebar-header { padding: 2px 12px 12px; border-bottom: none; }
.sidebar-user {
  display: flex; align-items: center; gap: 11px;
  background: color-mix(in srgb, var(--surface2) 72%, transparent);
  border: 1px solid var(--hairline, var(--border));
  border-radius: var(--r-lg, 14px);
  padding: 10px 12px;
}
.sidebar-avatar {
  width: 38px; height: 38px; border-radius: 12px;
  background: var(--grad-primary);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 15px; color: white; flex-shrink: 0;
  box-shadow: 0 3px 10px -2px color-mix(in srgb, var(--primary) 45%, transparent),
              inset 0 1px 0 rgba(255,255,255,0.25);
  transition: transform .15s ease, box-shadow .15s ease;
}
.sidebar-avatar:hover { transform: translateY(-1px); box-shadow: 0 6px 16px -2px color-mix(in srgb, var(--primary) 60%, transparent); }
.sidebar-user-info { flex: 1; min-width: 0; position: relative; }
.sidebar-user-info .name { font-size: 14px; font-weight: 700; letter-spacing: 0.01em; }
.sidebar-user-info .role { font-size: 11px; color: var(--text2); margin-top: 1px; }
.sidebar-team-switcher {
  display: inline-flex; align-items: center; gap: 4px;
  margin-top: 3px; font-size: 11px; color: var(--primary-hover);
  cursor: pointer; max-width: 100%;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.sidebar-team-switcher:hover { text-decoration: underline; }
.btn-logout {
  background: none; border: 1px solid transparent; border-radius: 8px;
  color: var(--text3, var(--text2)); font-size: 11px; padding: 5px 9px;
  cursor: pointer; flex-shrink: 0;
  transition: color .15s, background .15s, border-color .15s;
}
.btn-logout:hover { border-color: color-mix(in srgb, var(--red) 45%, transparent); color: var(--red); background: color-mix(in srgb, var(--red) 8%, transparent); }

/* ── 全局搜索 ── */
.sidebar-search { padding: 4px 12px 12px; border-bottom: none; position: relative; }
.sidebar-search input {
  width: 100%; padding: 9px 13px;
  border: 1px solid var(--hairline, var(--border));
  border-radius: 10px;
  background: color-mix(in srgb, var(--bg) 42%, transparent);
  color: var(--text); font-size: 12.5px; outline: none; box-sizing: border-box;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.sidebar-search input::placeholder { color: var(--text3, var(--text2)); }
.sidebar-search input:hover { border-color: var(--border-strong, var(--border)); }
.sidebar-search input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 20%, transparent);
  background: color-mix(in srgb, var(--bg) 25%, transparent);
}
.search-results-dropdown {
  position: absolute; left: 12px; right: 12px; top: 100%;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg, 14px);
  max-height: calc(100vh - 300px); overflow-y: auto; z-index: 200;
  box-shadow: var(--shadow-lg, 0 20px 48px -12px rgba(0,0,0,0.55));
  padding: 4px;
}
.search-result-item { padding: 9px 11px; cursor: pointer; border-bottom: none; border-radius: 9px; font-size: 12px; }
.search-result-item:hover { background: var(--surface2); }
.search-result-item .sr-type { font-size: 10px; color: var(--primary); text-transform: uppercase; font-weight: 700; letter-spacing: 0.5px; }
.search-result-item .sr-title { font-weight: 600; color: var(--text); margin: 2px 0; }
.search-result-item .sr-snippet { font-size: 11px; color: var(--text2); line-height: 1.5; }
.search-result-item .sr-snippet b { color: var(--primary); font-weight: 700; }

/* ── 导航 ── */
.nav { flex: 1; padding: 8px 12px 12px; overflow-y: auto; }
.nav-item {
  position: relative;
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; margin-bottom: 2px;
  border-radius: 10px; cursor: pointer;
  color: var(--text2); font-size: 13.5px; font-weight: 500;
  transition: background .15s ease, color .15s ease;
}
.nav-item .nav-icon { transition: color .15s ease, transform .15s ease; }
.nav-item:hover { background: color-mix(in srgb, var(--surface2) 80%, transparent); color: var(--text); }
.nav-item:hover .nav-icon { color: var(--text); }
.nav-item.active {
  background: var(--grad-primary-soft);
  color: var(--text); font-weight: 650;
}
.nav-item.active .nav-icon { color: var(--primary-hover); }
.nav-item.active::before {
  content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 3.5px; height: 56%; border-radius: 99px;
  background: var(--grad-primary);
  box-shadow: 0 0 10px color-mix(in srgb, var(--primary) 55%, transparent);
}
.nav-item .badge {
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
  margin-left: auto;
  background: linear-gradient(135deg, #f26d6d, #e05252);
  color: white; font-size: 10px; font-weight: 700; line-height: 1;
  padding: 0 5px; border-radius: 999px; min-width: 18px; height: 18px; text-align: center; white-space: nowrap;
  box-shadow: 0 2px 8px -1px rgba(242,109,109,0.5);
}
.nav-item .caret { margin-left: auto; font-size: 10px; opacity: 0.7; transition: transform 0.18s ease; }
.nav-item.expanded .caret { transform: rotate(90deg); }
.nav-submenu {
  display: none; padding-left: 18px; margin: 2px 0 6px;
  border-left: 1px solid var(--hairline, var(--border));
  margin-left: 21px;
}
.nav-submenu.show { display: block; }
.nav-sub-item {
  display: flex; align-items: center; gap: 9px;
  padding: 7px 11px; margin-bottom: 1px;
  border-radius: 9px; cursor: pointer;
  color: var(--text2); font-size: 12.5px; text-decoration: none;
  transition: background .15s, color .15s;
}
.nav-sub-item:hover { background: color-mix(in srgb, var(--surface2) 80%, transparent); color: var(--text); }
.nav-sub-item.active { background: var(--primary-a12, color-mix(in srgb, var(--primary) 12%, transparent)); color: var(--text); font-weight: 600; }

/* ── 侧栏底部 ── */
.sidebar-footer { padding: 10px 12px; border-top: 1px solid var(--hairline, var(--border)); }
.sidebar-footer .backup-btn {
  display: flex; align-items: center; gap: 8px; width: 100%;
  padding: 8px 12px; border-radius: 10px; cursor: pointer;
  color: var(--text2); font-size: 12px;
  background: none; border: 1px solid var(--hairline, var(--border));
  transition: all 0.15s; text-align: left;
}
.sidebar-footer .backup-btn:hover { background: var(--surface2); color: var(--text); border-color: var(--primary); }
.sidebar-footer .backup-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.sidebar-footer .backup-btn + .backup-btn { margin-top: 6px; }