/* ============================================================
   1940Netdisk — Steel Glass Design System
   军事工业风 · 钢铁玻璃美学
   ============================================================

   色彩体系 (Military Industrial Palette):
   --olive:  #5A6B4A  (橄榄绿 - 主色)
   --steel:  #6B7A8A  (钢铁灰 - 辅助色)
   --khaki:  #B8A88A  (卡其色 - 强调色)
   --rust:   #8B5A2B  (铁锈色 - 警告/危险)
   --gold:   #D4AF37  (金色 - 高亮)

   字体系统:
   标题: Bebas Neue
   正文: Roboto
   等宽: JetBrains Mono
   ============================================================ */

/* ========== 1. CSS 变量 ========== */
:root {
  /* ----- 主色板 ----- */
  --olive:          #5A6B4A;
  --olive-light:   #7A8F68;
  --olive-dark:    #3F4D33;
  --steel:          #6B7A8A;
  --steel-light:   #8FA0B0;
  --steel-dark:    #4A5563;
  --khaki:          #B8A88A;
  --khaki-light:   #D4C8B0;
  --khaki-dark:    #9A8A6A;
  --rust:           #8B5A2B;
  --rust-light:    #B87A4A;
  --rust-dark:     #6B3F1A;
  --gold:           #D4AF37;
  --gold-light:    #E8C84A;
  --gold-dark:     #B8942A;

  /* ----- 语义色 ----- */
  --color-bg:           #1A1E22;
  --color-bg-alt:       #23282E;
  --color-bg-card:      rgba(35, 40, 46, 0.85);
  --color-surface:      rgba(42, 48, 56, 0.75);
  --color-border:       rgba(107, 122, 138, 0.25);
  --color-border-light: rgba(107, 122, 138, 0.12);
  --color-text:         #D8DCE0;
  --color-text-secondary: #8FA0B0;
  --color-text-muted:   #6B7A8A;
  --color-accent:       var(--olive);
  --color-danger:       var(--rust);
  --color-success:      #6B8F5A;
  --color-warning:      var(--gold);
  --color-info:         var(--steel-light);

  /* ----- 字体 ----- */
  --font-display:  'Bebas Neue', 'Impact', 'Arial Narrow', sans-serif;
  --font-body:     'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* ----- 圆角 ----- */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;

  /* ----- 阴影 ----- */
  --shadow-sm:    0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:    0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg:    0 8px 24px rgba(0,0,0,0.6);
  --shadow-xl:    0 16px 48px rgba(0,0,0,0.7);
  --shadow-glow:  0 0 20px rgba(90,107,74,0.3);

  /* ----- 间距 ----- */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  32px;
  --space-2xl: 48px;

  /* ----- 布局 ----- */
  --navbar-height: 56px;
  --sidebar-width: 220px;
  --content-max-width: 1400px;

  /* ----- 过渡 ----- */
  --transition-fast:   150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow:   400ms ease;

  /* ----- 玻璃效果 ----- */
  --glass-bg:       rgba(26, 30, 34, 0.75);
  --glass-border:   rgba(107, 122, 138, 0.15);
  --glass-blur:     12px;
  --glass-shine:    rgba(255, 255, 255, 0.03);
}

/* ========== 亮色模式 ========== */
[data-theme="light"] {
  --color-bg:           #E8E6E0;
  --color-bg-alt:       #DCD8D0;
  --color-bg-card:      rgba(245, 242, 238, 0.88);
  --color-surface:      rgba(235, 232, 226, 0.78);
  --color-border:       rgba(107, 122, 138, 0.20);
  --color-border-light: rgba(107, 122, 138, 0.08);
  --color-text:         #2C2E30;
  --color-text-secondary: #5A6670;
  --color-text-muted:   #8A959E;
  --glass-bg:           rgba(232, 230, 224, 0.78);
  --glass-border:       rgba(107, 122, 138, 0.12);
  --shadow-sm:          0 1px 3px rgba(0,0,0,0.10);
  --shadow-md:          0 4px 12px rgba(0,0,0,0.12);
  --shadow-lg:          0 8px 24px rgba(0,0,0,0.15);
  --shadow-xl:          0 16px 48px rgba(0,0,0,0.18);
}

/* ========== 2. 基础重置 ========== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(ellipse 80% 60% at 10% 20%, rgba(90, 107, 74, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 90% 80%, rgba(139, 90, 43, 0.06) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 50% 50%, rgba(107, 122, 138, 0.04) 0%, transparent 60%);
  background-attachment: fixed;
  min-height: 100vh;
  position: relative;
}

/* Noise 纹理覆盖层 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
  pointer-events: none;
}

a {
  color: var(--khaki);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--gold);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ========== 3. 滚动条 ========== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--steel-dark);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--steel);
}

/* ========== 4. 导航栏 (Navbar) ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 2px solid var(--olive);
  box-shadow: var(--shadow-sm);
}

.nav-left {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex: 1;
  min-width: 0;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.08em;
  color: var(--khaki);
  text-transform: uppercase;
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--transition-fast);
}
.nav-logo:hover {
  color: var(--gold);
}
.nav-logo img,
.nav-logo svg {
  height: 32px;
  width: auto;
}

.nav-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
}
.nav-breadcrumb a {
  color: var(--color-text-muted);
}
.nav-breadcrumb a:hover {
  color: var(--khaki);
}
.nav-breadcrumb .separator {
  color: var(--color-text-muted);
  margin: 0 2px;
  font-size: 0.75rem;
}
.nav-breadcrumb .current {
  color: var(--khaki);
  font-weight: 500;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-shrink: 0;
}

/* 搜索框 */
.search-box {
  position: relative;
  display: flex;
  align-items: center;
}
.search-box input {
  width: 200px;
  padding: 6px 12px 6px 32px;
  background: rgba(107, 122, 138, 0.10);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.8125rem;
  font-family: var(--font-body);
  outline: none;
  transition: all var(--transition-fast);
}
.search-box input:focus {
  width: 260px;
  border-color: var(--olive);
  background: rgba(90, 107, 74, 0.08);
  box-shadow: 0 0 0 2px rgba(90, 107, 74, 0.15);
}
.search-box input::placeholder {
  color: var(--color-text-muted);
}
.search-box .search-icon {
  position: absolute;
  left: 10px;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  pointer-events: none;
}

/* ========== 5. 用户头像 & 下拉菜单 ========== */
.user-avatar {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  padding: 4px 8px 4px 4px;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
  user-select: none;
}
.user-avatar:hover {
  background: rgba(107, 122, 138, 0.10);
}
.user-avatar .avatar-img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--olive);
  object-fit: cover;
  background: var(--steel-dark);
}
.user-avatar .avatar-initials {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--olive);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.875rem;
  background: var(--steel-dark);
  color: var(--khaki);
}
.user-avatar .avatar-name {
  font-size: 0.8125rem;
  color: var(--color-text);
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.user-avatar .avatar-chevron {
  font-size: 0.625rem;
  color: var(--color-text-muted);
  transition: transform var(--transition-fast);
}
.user-avatar.active .avatar-chevron {
  transform: rotate(180deg);
}

/* 用户下拉菜单 */
.user-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 200px;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-xs) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
  z-index: 1100;
}
.user-dropdown.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.user-dropdown .dropdown-header {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: var(--space-xs);
}
.user-dropdown .dropdown-header .dropdown-user-name {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text);
}
.user-dropdown .dropdown-header .dropdown-user-role {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.user-dropdown .dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px var(--space-md);
  font-size: 0.8125rem;
  color: var(--color-text);
  cursor: pointer;
  transition: background var(--transition-fast);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-body);
}
.user-dropdown .dropdown-item:hover {
  background: rgba(107, 122, 138, 0.10);
}
.user-dropdown .dropdown-item i {
  width: 18px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}
.user-dropdown .dropdown-item.danger {
  color: var(--rust-light);
}
.user-dropdown .dropdown-item.danger i {
  color: var(--rust-light);
}
.user-dropdown .dropdown-divider {
  height: 1px;
  background: var(--color-border-light);
  margin: var(--space-xs) 0;
}

/* ========== 6. 侧边栏 (Sidebar) ========== */
.main-layout {
  display: flex;
  padding-top: var(--navbar-height);
  min-height: 100vh;
}

.sidebar {
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  z-index: 900;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  padding: var(--space-md) 0;
  overflow-y: auto;
  transition: transform var(--transition-normal);
}

.sidebar-nav {
  list-style: none;
  padding: 0 var(--space-sm);
  flex: 1;
}

.sidebar-nav li {
  margin-bottom: 2px;
}

.sidebar-nav a,
.sidebar-nav button {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-family: var(--font-body);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}
.sidebar-nav a:hover,
.sidebar-nav button:hover {
  color: var(--color-text);
  background: rgba(107, 122, 138, 0.08);
}
.sidebar-nav a.active,
.sidebar-nav button.active {
  color: var(--khaki);
  background: rgba(90, 107, 74, 0.15);
  border-left: 2px solid var(--olive);
}
.sidebar-nav a i,
.sidebar-nav button i {
  width: 20px;
  text-align: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.sidebar-nav .nav-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sidebar-nav .nav-badge {
  margin-left: auto;
  font-size: 0.6875rem;
  padding: 1px 6px;
  border-radius: 10px;
  background: var(--olive);
  color: #fff;
  font-weight: 600;
}

/* 侧边栏存储信息面板 */
.storage-info {
  margin: var(--space-md) var(--space-md) 0;
  padding: var(--space-md);
  background: rgba(107, 122, 138, 0.06);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
}
.storage-info .storage-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}
.storage-info .storage-value {
  font-size: 0.8125rem;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}
.storage-info .storage-bar {
  height: 4px;
  background: rgba(107, 122, 138, 0.15);
  border-radius: 2px;
  overflow: hidden;
}
.storage-info .storage-bar-fill {
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--olive), var(--khaki));
  transition: width var(--transition-slow);
}
.storage-info .storage-detail {
  display: flex;
  justify-content: space-between;
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* ========== 7. 内容区域 ========== */
.content-area {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: var(--space-lg);
  max-width: var(--content-max-width);
  width: 100%;
}

.content-area.no-sidebar {
  margin-left: 0;
}

/* ========== 8. 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 8px 18px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.4;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--khaki);
  background: var(--olive);
  color: var(--khaki-light);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
}
.btn:hover {
  background: var(--olive-light);
  border-color: var(--gold);
  color: var(--gold-light);
  box-shadow: 0 0 15px rgba(212,175,55,0.3);
}
.btn:active {
  transform: scale(0.97);
}
.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: rgba(90, 130, 255, 0.2);
  border-color: rgba(90, 130, 255, 0.3);
  color: #8aafff;
}
.btn-primary:hover {
  background: rgba(90, 130, 255, 0.3);
  border-color: rgba(90, 130, 255, 0.5);
  color: #aac4ff;
  box-shadow: 0 0 15px rgba(90, 130, 255, 0.25);
}

.btn-danger {
  background: var(--rust);
  border-color: var(--rust-light);
  color: var(--khaki-light);
}
.btn-danger:hover {
  background: var(--rust-light);
  border-color: var(--gold);
  color: var(--gold-light);
}

.btn-ghost {
  background: transparent;
  border-color: var(--steel);
  color: var(--color-text-secondary);
}
.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
  background: rgba(212, 175, 55, 0.05);
}

.btn-sm {
  padding: 4px 10px;
  font-size: 0.75rem;
}
.btn-lg {
  padding: 12px 24px;
  font-size: 0.9375rem;
}
.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 50%;
}
.btn-icon.btn-sm {
  width: 28px;
  height: 28px;
}

/* ========== 9. 输入框 & 表单 ========== */
.input-glass {
  padding: 8px 12px;
  background: rgba(107, 122, 138, 0.08);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.875rem;
  font-family: var(--font-body);
  outline: none;
  transition: all var(--transition-fast);
  width: 100%;
}
.input-glass:focus {
  border-color: var(--olive);
  background: rgba(90, 107, 74, 0.06);
  box-shadow: 0 0 0 2px rgba(90, 107, 74, 0.12);
}
.input-glass::placeholder {
  color: var(--color-text-muted);
}
.input-glass.error {
  border-color: var(--rust);
}
.input-glass.error:focus {
  box-shadow: 0 0 0 2px rgba(139, 90, 43, 0.15);
}

select.input-glass {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%236B7A8A'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 30px;
  cursor: pointer;
}

textarea.input-glass {
  resize: vertical;
  min-height: 80px;
}

.form-group {
  margin-bottom: var(--space-md);
}
.form-group label {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
  font-weight: 500;
}
.form-group .form-hint {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

.form-row {
  display: flex;
  gap: var(--space-md);
  align-items: flex-end;
}
.form-row > * {
  flex: 1;
}

/* ========== 10. 玻璃卡片 (Glass Card) ========== */
.glass-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(90,107,74,0.4);
  border-radius: 3px;
  padding: 1.2rem 1.5rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  transition: box-shadow var(--transition-normal);
}
.glass-card:hover {
  box-shadow: 0 8px 30px rgba(0,0,0,0.5);
}
.glass-card .card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border-light);
}
.glass-card .card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.04em;
  color: var(--khaki);
  text-transform: uppercase;
}
.glass-card .card-subtitle {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

/* ========== 11. 表格 ========== */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
table thead {
  background: rgba(107, 122, 138, 0.06);
}
table th {
  padding: 10px 12px;
  text-align: left;
  font-weight: 400;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
  font-family: var(--font-display);
}
table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text);
}
table tr:hover td {
  background: rgba(107, 122, 138, 0.04);
}
table tr:last-child td {
  border-bottom: none;
}

/* ========== 12. 徽章 (Badges) ========== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  font-size: 0.6875rem;
  font-weight: 600;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1.4;
}
.badge-default {
  background: rgba(107, 122, 138, 0.15);
  color: var(--steel-light);
}
.badge-image {
  background: rgba(90, 107, 74, 0.2);
  color: var(--olive-light);
}
.badge-code {
  background: rgba(212, 175, 55, 0.15);
  color: var(--gold);
}
.badge-text {
  background: rgba(107, 122, 138, 0.12);
  color: var(--steel-light);
}
.badge-folder {
  background: rgba(184, 168, 138, 0.15);
  color: var(--khaki);
}
.badge-admin {
  background: rgba(139, 90, 43, 0.2);
  color: var(--rust-light);
}
.badge-user {
  background: rgba(90, 107, 74, 0.15);
  color: var(--olive-light);
}
.badge-danger {
  background: rgba(139, 90, 43, 0.2);
  color: var(--rust-light);
}
.badge-success {
  background: rgba(107, 143, 90, 0.2);
  color: var(--color-success);
}

/* ========== 13. 模态框 (Modal) ========== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}
.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}
.modal-overlay.active .modal-dialog {
  transform: translateY(0);
  opacity: 1;
}
.modal-dialog {
  background: var(--color-bg-alt);
  border: 2px solid var(--olive);
  border-radius: 3px;
  padding: 2rem;
  width: 500px;
  max-width: 90vw;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  max-height: 80vh;
  overflow-y: auto;
  transform: translateY(20px);
  opacity: 0;
  transition: all var(--transition-normal);
}
.modal-dialog h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 0.05em;
  color: var(--khaki);
  margin-bottom: 1.2rem;
  border-bottom: 2px solid var(--olive);
  padding-bottom: 0.5rem;
}

.modal-dialog {
  width: 90%;
  max-width: 500px;
  max-height: 85vh;
  overflow-y: auto;
  background: var(--color-bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-xl);
  transform: translateY(20px);
  opacity: 0;
  transition: all var(--transition-normal);
}
.modal-dialog h3 {
  font-family: var(--font-display);
  font-size: 1.375rem;
  letter-spacing: 0.04em;
  color: var(--khaki);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
}
.modal-dialog .modal-body {
  margin-bottom: var(--space-lg);
}
.modal-dialog .modal-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: flex-end;
}

/* 文件拖拽区域 */
.drop-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-muted);
}
.drop-zone:hover {
  border-color: var(--olive);
  background: rgba(90, 107, 74, 0.05);
  color: var(--khaki);
}
.drop-zone.drag-over {
  border-color: var(--gold);
  background: rgba(212, 175, 55, 0.05);
  color: var(--gold);
}
.drop-zone i {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
  display: block;
}

/* ========== 14. Toast 通知 ========== */
.toast-container {
  position: fixed;
  top: calc(var(--navbar-height) + var(--space-md));
  right: var(--space-md);
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  min-width: 280px;
  max-width: 420px;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-size: 0.8125rem;
  color: var(--color-text);
  pointer-events: auto;
  animation: toastIn 0.3s ease forwards;
}

.toast.toast-out {
  animation: toastOut 0.3s ease forwards;
}

.toast i {
  font-size: 1rem;
  flex-shrink: 0;
}
.toast .toast-msg {
  flex: 1;
}
.toast .toast-close {
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}
.toast .toast-close:hover {
  color: var(--color-text);
}

.toast.toast-success i { color: var(--color-success); }
.toast.toast-error i { color: var(--rust-light); }
.toast.toast-warning i { color: var(--gold); }
.toast.toast-info i { color: var(--steel-light); }

@keyframes toastIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}
@keyframes toastOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* ========== 15. Section 页面头部 ========== */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
  gap: var(--space-md);
}
.section-header h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  letter-spacing: 0.04em;
  color: var(--khaki);
  text-transform: uppercase;
  margin: 0;
}
.section-header .section-actions {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

/* ========== 16. 工具栏 ========== */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.toolbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.toolbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* 视图切换 */
.view-toggle {
  display: flex;
  background: rgba(107, 122, 138, 0.08);
  border-radius: var(--radius-md);
  padding: 2px;
}
.view-toggle button {
  padding: 6px 12px;
  background: none;
  border: none;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.8125rem;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
}
.view-toggle button:hover {
  color: var(--color-text);
}
.view-toggle button.active {
  background: rgba(90, 107, 74, 0.2);
  color: var(--khaki);
}

/* ========== 17. 批量操作栏 ========== */
.batch-bar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(90, 107, 74, 0.1);
  border: 1px solid rgba(90, 107, 74, 0.2);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  font-size: 0.8125rem;
  color: var(--color-text);
}
.batch-bar .batch-count {
  font-weight: 600;
  color: var(--khaki);
  margin-right: var(--space-sm);
}

/* ========== 18. 网格视图 & 图库视图 ========== */
.grid-view {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-md);
}

.gallery-view {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-md);
}

.grid-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-fast);
  cursor: pointer;
}
.grid-item:hover {
  border-color: var(--olive);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}
.grid-item .grid-thumb {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: var(--steel-dark);
}
.grid-item .grid-info {
  padding: var(--space-sm);
}
.grid-item .grid-name {
  font-size: 0.8125rem;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.grid-item .grid-meta {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ========== 19. 空状态 ========== */
.empty-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  color: var(--color-text-muted);
}
.empty-state i {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  display: block;
  opacity: 0.4;
}
.empty-state p {
  font-size: 0.9375rem;
}

/* ========== 20. 加载状态 ========== */
.loading-state {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl);
  color: var(--color-text-muted);
}
.loading-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border);
  border-top-color: var(--olive);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========== 21. 分页 ========== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-lg) 0;
}
.pagination button {
  min-width: 32px;
  height: 32px;
  padding: 0 6px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
}
.pagination button:hover {
  border-color: var(--olive);
  color: var(--khaki);
}
.pagination button.active {
  background: var(--olive);
  border-color: var(--olive);
  color: #fff;
}
.pagination button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ========== 22. 后台管理页面特有 ========== */
.admin-header {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  padding: var(--space-md) var(--space-lg);
}
.admin-header .header-stats {
  display: flex;
  gap: var(--space-lg);
}
.admin-header .header-stat {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}
.admin-header .header-stat i {
  color: var(--khaki);
}
.admin-header .header-stat strong {
  color: var(--color-text);
  font-weight: 600;
}

/* ========== 23. 文件压缩面板 ========== */
.compress-panel {
  background: rgba(107, 122, 138, 0.06);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-top: var(--space-md);
}
.compress-panel .compress-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}
.compress-panel .compress-grid {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}
.compress-panel .compress-option {
  padding: 6px 12px;
  background: rgba(107, 122, 138, 0.08);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
}
.compress-panel .compress-option:hover {
  border-color: var(--olive);
}
.compress-panel .compress-option.active {
  background: rgba(90, 107, 74, 0.2);
  border-color: var(--olive);
  color: var(--khaki);
}

/* ========== 24. 预览模态框 ========== */
.preview-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}
.preview-overlay img,
.preview-overlay video {
  max-width: 90%;
  max-height: 85vh;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}
.preview-overlay .preview-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 40px;
  height: 40px;
  background: rgba(0,0,0,0.5);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}
.preview-overlay .preview-close:hover {
  background: rgba(139, 90, 43, 0.7);
}

/* ========== 25. Flex 工具类 ========== */
.flex-row {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.flex-row-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.flex-col {
  display: flex;
  flex-direction: column;
}
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* ========== 26. 间距工具类 ========== */
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }

/* ========== 27. 文字工具类 ========== */
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-khaki { color: var(--khaki); }
.text-gold { color: var(--gold); }
.text-danger { color: var(--rust-light); }
.text-sm { font-size: 0.8125rem; }
.text-xs { font-size: 0.6875rem; }
.text-mono { font-family: var(--font-mono); }
.text-display { font-family: var(--font-display); }
.text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.text-uppercase {
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ========== 28. 过渡动画 ========== */
.fade-enter-active,
.fade-leave-active {
  transition: opacity 0.2s ease;
}
.fade-enter-from,
.fade-leave-to {
  opacity: 0;
}

.slide-enter-active,
.slide-leave-active {
  transition: all 0.25s ease;
}
.slide-enter-from {
  opacity: 0;
  transform: translateY(-10px);
}
.slide-leave-to {
  opacity: 0;
  transform: translateY(10px);
}

/* ========== 29. 主题切换按钮 ========== */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: rgba(107, 122, 138, 0.08);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 1rem;
  transition: all var(--transition-fast);
}
.theme-toggle-btn:hover {
  background: rgba(107, 122, 138, 0.16);
  color: var(--khaki);
}

/* ========== 30. data-theme 兼容层 ========== */
[data-theme] body {
  background-color: var(--color-bg);
}

/* UI 配置管理器背景层 (兼容旧代码) */
#ui-bg-image,
#ui-canvas,
#ui-noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}
#ui-noise {
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ========== 31. 现有页面兼容样式 ========== */

/* Login 页面 */
.login-page body,
body.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background-color: var(--color-bg);
}
.login-container {
  width: 100%;
  max-width: 400px;
  padding: var(--space-md);
}
.login-card {
  background: var(--color-bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: var(--space-xl);
  box-shadow: var(--shadow-xl);
}
.login-card .login-title {
  font-family: var(--font-display);
  font-size: 2rem;
  text-align: center;
  color: var(--khaki);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-lg);
}
.login-card .login-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  margin-bottom: var(--space-lg);
}
.login-card .error-message {
  background: rgba(139, 90, 43, 0.12);
  border: 1px solid rgba(139, 90, 43, 0.25);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  color: var(--rust-light);
  font-size: 0.8125rem;
  margin-bottom: var(--space-md);
  display: none;
}
.login-card .error-message.show {
  display: block;
}
.login-card .form-group {
  margin-bottom: var(--space-md);
}
.login-card .form-group label {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}
.login-card .input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}
.login-card .input-wrapper i {
  position: absolute;
  left: 12px;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}
.login-card .input-wrapper input {
  width: 100%;
  padding: 10px 12px 10px 36px;
  background: rgba(107, 122, 138, 0.08);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.875rem;
  font-family: var(--font-body);
  outline: none;
  transition: all var(--transition-fast);
}
.login-card .input-wrapper input:focus {
  border-color: var(--olive);
  box-shadow: 0 0 0 2px rgba(90, 107, 74, 0.12);
}
.login-card .input-wrapper input::placeholder {
  color: var(--color-text-muted);
}
.login-card .login-btn {
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, var(--olive), var(--olive-dark));
  border: none;
  border-radius: var(--radius-md);
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition-fast);
  letter-spacing: 0.04em;
}
.login-card .login-btn:hover {
  background: linear-gradient(135deg, var(--olive-light), var(--olive));
  box-shadow: var(--shadow-glow);
}
.login-card .login-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.login-card .remember-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}
.login-card .remember-label {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  cursor: pointer;
}
.login-card .remember-label input[type="checkbox"] {
  accent-color: var(--olive);
}
.login-card .register-link {
  text-align: center;
  margin-top: var(--space-md);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.login-card .register-link a {
  color: var(--khaki);
}
.login-card .register-link a:hover {
  color: var(--gold);
}

/* Index 页面现有结构兼容 */
.header {
  height: var(--navbar-height);
  display: flex;
  align-items: center;
  padding: 0 var(--space-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}
.header .header-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 1.375rem;
  color: var(--khaki);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.header .header-title img {
  height: 32px;
}
.nav-links {
  display: flex;
  gap: var(--space-xs);
  margin-left: auto;
}
.nav-links a {
  padding: 6px 14px;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
  transition: all var(--transition-fast);
}
.nav-links a:hover {
  background: rgba(107, 122, 138, 0.08);
  color: var(--color-text);
}
.nav-links a.active {
  color: var(--khaki);
  background: rgba(90, 107, 74, 0.12);
}

/* Main Container */
.main-container {
  padding-top: calc(var(--navbar-height) + var(--space-lg));
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
  padding-bottom: var(--space-xl);
}

/* Upload Section Card */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-md);
}
.card .card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border-light);
}
.card .card-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 1.125rem;
  color: var(--khaki);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Storage Switcher */
.storage-switcher {
  margin-bottom: var(--space-md);
}
.storage-options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.storage-options button {
  padding: 6px 14px;
  background: rgba(107, 122, 138, 0.06);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
}
.storage-options button:hover {
  border-color: var(--olive);
  color: var(--khaki);
}
.storage-options button.active {
  background: rgba(90, 107, 74, 0.15);
  border-color: var(--olive);
  color: var(--khaki);
}

/* Upload Methods */
.upload-methods {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}
.upload-methods .method-btn {
  padding: 10px 20px;
  background: rgba(107, 122, 138, 0.08);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.upload-methods .method-btn:hover {
  background: rgba(90, 107, 74, 0.12);
  border-color: var(--olive);
  color: var(--khaki);
}

/* Upload List 现有结构兼容 */
.upload-list {
  margin-top: var(--space-md);
}
.upload-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border-light);
}
.upload-item:last-child {
  border-bottom: none;
}

/* Result List 现有结构兼容 */
.result-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.result-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm);
  background: rgba(107, 122, 138, 0.04);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
}

/* Stats Bar */
.stats-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  padding: var(--space-md);
  background: rgba(107, 122, 138, 0.04);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
}
.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.stat-item .stat-value {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--khaki);
  letter-spacing: 0.04em;
}
.stat-item .stat-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Image Grid (图库页面) */
.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-md);
}
.image-card-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-fast);
  position: relative;
}
.image-card-item:hover {
  border-color: var(--olive);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}
.image-card-item img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

/* History Grid */
.history-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-md);
}
.history-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-fast);
}
.history-item:hover {
  border-color: var(--olive);
  box-shadow: var(--shadow-glow);
}

/* Preview Modal 兼容 */
.preview-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}
.preview-modal img,
.preview-modal video {
  max-width: 90%;
  max-height: 85vh;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

/* ========== 32. 页面专用样式 ========== */

/* Admin 页面头部 */
.el-header .header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 var(--space-md);
}
.el-header .stats {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}
.el-header .stats strong {
  color: var(--khaki);
}

/* WebDAV 页面 */
.webdav-page .page {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: calc(var(--navbar-height) + var(--space-lg)) var(--space-lg) var(--space-xl);
}
.webdav-page .page h1 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--khaki);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ========== 33. 响应式 ========== */
@media (max-width: 768px) {
  :root {
    --sidebar-width: 0px;
  }

  .sidebar {
    transform: translateX(-100%);
    width: 240px;
  }
  .sidebar.mobile-open {
    transform: translateX(0);
  }

  .content-area {
    margin-left: 0;
    padding: var(--space-md);
  }

  .navbar {
    padding: 0 var(--space-md);
  }

  .search-box input {
    width: 140px;
  }
  .search-box input:focus {
    width: 180px;
  }

  .nav-logo span {
    display: none;
  }

  .grid-view,
  .gallery-view {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }

  .form-row {
    flex-direction: column;
  }

  .modal-dialog {
    padding: var(--space-lg);
  }

  .storage-info {
    display: none;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 500px) {
  .navbar {
    padding: 0 var(--space-sm);
  }

  .nav-breadcrumb {
    display: none;
  }

  .search-box input {
    width: 100px;
  }
  .search-box input:focus {
    width: 140px;
  }

  .user-avatar .avatar-name {
    display: none;
  }

  .grid-view,
  .gallery-view {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }

  .content-area {
    padding: var(--space-sm);
  }

  .toast {
    min-width: auto;
    max-width: calc(100vw - var(--space-lg));
  }

  .upload-methods {
    flex-wrap: wrap;
  }
  .upload-methods .method-btn {
    flex: 1;
    min-width: 0;
    justify-content: center;
  }

  .stats-bar {
    gap: var(--space-md);
  }
}

/* ========== 34. 汉堡菜单按钮 ========== */
.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}
.mobile-menu-btn:hover {
  background: rgba(107, 122, 138, 0.08);
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: flex;
  }
}

/* ========== 35. Sidebar Overlay (移动端) ========== */
.sidebar-overlay {
  position: fixed;
  inset: 0;
  z-index: 899;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}
.sidebar-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ========== 36. 账号切换面板 ========== */
.account-switcher {
  position: relative;
}
.account-list {
  max-height: 300px;
  overflow-y: auto;
}
.account-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
}
.account-item:hover {
  background: rgba(107, 122, 138, 0.08);
}
.account-item.active {
  background: rgba(90, 107, 74, 0.12);
  border-left: 2px solid var(--olive);
}
.account-item .account-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--steel-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--khaki);
  border: 1px solid var(--olive);
  flex-shrink: 0;
}
.account-item .account-info {
  flex: 1;
  min-width: 0;
}
.account-item .account-name {
  font-size: 0.8125rem;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.account-item .account-role {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
}

/* ========== 37. Guest Notice ========== */
.guest-notice {
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  font-size: 0.8125rem;
  color: var(--gold);
  margin-bottom: var(--space-md);
  text-align: center;
}

/* ========== 38. 文件夹选择面板 ========== */
.folder-target-panel {
  margin-bottom: var(--space-md);
}
.folder-target-panel .folder-target-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
}
.folder-target-panel .folder-target-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}
.folder-target-panel .folder-action-row {
  display: flex;
  gap: var(--space-sm);
}
.folder-picker-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}
.folder-picker-list button {
  padding: 4px 10px;
  background: rgba(107, 122, 138, 0.06);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
}
.folder-picker-list button:hover {
  border-color: var(--olive);
  color: var(--khaki);
}
.folder-picker-list button.active {
  background: rgba(90, 107, 74, 0.12);
  border-color: var(--olive);
  color: var(--khaki);
}
.folder-create-row {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

/* ========== 39. 链接格式标签 ========== */
.link-format-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}
.link-format-tabs span {
  padding: 4px 10px;
  background: rgba(107, 122, 138, 0.06);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.link-format-tabs span:hover {
  border-color: var(--olive);
}
.link-format-tabs span.active {
  background: rgba(90, 107, 74, 0.12);
  border-color: var(--olive);
  color: var(--khaki);
}

/* ========== 40. 压缩确认面板 ========== */
.compress-confirm-card {
  background: var(--color-bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  max-width: 520px;
  width: 90%;
}
.compress-confirm-card .compress-confirm-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  color: var(--khaki);
}
.compress-confirm-stats {
  display: flex;
  gap: var(--space-md);
  margin: var(--space-md) 0;
}
.compress-confirm-stats .compress-stat {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}
.compress-confirm-stats .compress-stat strong {
  color: var(--color-text);
}
.compress-mode-grid {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}
.compress-mode-grid button {
  flex: 1;
  padding: 10px;
  background: rgba(107, 122, 138, 0.06);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  font-family: var(--font-body);
}
.compress-mode-grid button:hover {
  border-color: var(--olive);
}
.compress-mode-grid button.active {
  background: rgba(90, 107, 74, 0.12);
  border-color: var(--olive);
  color: var(--khaki);
}
.compress-confirm-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: flex-end;
  margin-top: var(--space-md);
}