/* 
 * 全站通用样式（科技感暗色主题）
 * - 包含 Toast / Confirm 组件
 * - 提供表单、按钮、卡片、导航等基础样式
 */

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

html,
body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============= CSS 变量 ============= */
:root {
  /* 主色调 */
  --color-primary: #3b82f6;
  --color-primary-light: #60a5fa;
  --color-primary-dark: #1d4ed8;
  --color-accent: #22c55e;
  --color-accent-glow: rgba(34, 197, 94, 0.9);
  
  /* 渐变 */
  --gradient-primary: linear-gradient(120deg, #3b82f6, #6366f1, #22c55e);
  --gradient-danger: linear-gradient(120deg, #ef4444, #f97316);
  --gradient-dark: radial-gradient(circle at top left, #1f2937 0%, #020617 55%, #000 100%);
  
  /* 背景色 */
  --bg-dark: #020617;
  --bg-card: rgba(15, 23, 42, 0.96);
  --bg-card-hover: rgba(15, 23, 42, 0.98);
  --bg-overlay: rgba(15, 23, 42, 0.95);
  
  /* 边框色 */
  --border-color: rgba(55, 65, 81, 0.9);
  --border-color-hover: rgba(148, 163, 184, 0.9);
  --border-focus: rgba(129, 140, 248, 0.95);
  
  /* 文字色 */
  --text-primary: #e5e7eb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  /* 状态色 */
  --color-success: #22c55e;
  --color-error: #ef4444;
  --color-warning: #f59e0b;
  --color-info: #3b82f6;
  
  /* 间距 */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  
  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;
  
  /* 阴影 */
  --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.4);
  --shadow-md: 0 12px 30px rgba(15, 23, 42, 0.6);
  --shadow-lg: 0 18px 45px rgba(15, 23, 42, 0.8);
  --shadow-glow: 0 12px 28px rgba(37, 99, 235, 0.45);
  
  /* 字体 */
  --font-sans: 'SF Pro Display', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'JetBrains Mono', Consolas, monospace;
}

/* ============= 全局页面布局 ============= */
body.dark-theme {
  font-family: var(--font-sans);
  background: var(--gradient-dark);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
}

/* 居中卡片页面（登录/注册等） */
body.light-surface {
  min-height: 100vh;
  margin: 0;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-dark);
  color: var(--text-primary);
  font-family: var(--font-sans);
}

/* ============= 页面壳层 ============= */
.page-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  position: relative;
}

.page-content {
  flex: 1;
  padding: var(--space-lg);
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

/* ============= 网格背景 ============= */
.grid-bg {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ============= 发光球效果 ============= */
.glow-orb {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
  filter: blur(80px);
  top: -200px;
  left: -200px;
  pointer-events: none;
  z-index: 0;
  animation: orbFloat 20s ease-in-out infinite;
}

.glow-orb.secondary {
  background: radial-gradient(circle, rgba(34, 197, 94, 0.12) 0%, transparent 70%);
  top: auto;
  bottom: -300px;
  left: auto;
  right: -200px;
  animation-delay: -10s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(50px, 30px); }
}

/* ============= 导航栏 ============= */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo {
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-logo img {
  width: 32px;
  height: 32px;
  display: block;
}

.nav-title-wrap {
  display: flex;
  flex-direction: column;
}

.nav-title {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(90deg, #60a5fa, #34d399);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-link {
  padding: 8px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-full);
  transition: all 0.2s;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
  color: var(--color-primary-light);
  background: rgba(59, 130, 246, 0.1);
}

/* ============= 页脚 ============= */
.footer {
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  background: rgba(15, 23, 42, 0.6);
  /* 对齐全站内容宽度，并在 page-shell(flex) 中贴底 */
  width: 100%;
  margin: auto auto 0;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent-glow);
}

.footer a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer a:hover {
  color: var(--text-secondary);
}

/* ============= 居中卡片容器 ============= */
.shell-centered-card {
  max-width: 480px;
  width: 100%;
  border-radius: var(--radius-xl);
  padding: 32px 28px 26px;
  background: radial-gradient(circle at top left, var(--bg-card), var(--bg-card));
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.shell-centered-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at top, rgba(56, 189, 248, 0.16), transparent 60%);
  opacity: 0.7;
  pointer-events: none;
}

.shell-centered-card-inner {
  position: relative;
  z-index: 1;
}

/* ============= 卡片头部 ============= */
.shell-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
}

.shell-title-wrap {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.shell-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
}

.shell-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
}

.shell-badge {
  font-size: 11px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
}

.shell-divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-color), transparent);
  margin-bottom: 20px;
}

/* ============= 表单样式 ============= */
.form-stack {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.form-row .form-group {
  flex: 1;
}

.form-label {
  font-size: 13px;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.form-label .required {
  color: #f97316;
}

.form-input {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(129, 140, 248, 0.25);
  background: var(--bg-card-hover);
}

.form-input[readonly],
.form-input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-input.error {
  border-color: var(--color-error);
}

.form-hint {
  font-size: 11px;
  color: var(--text-muted);
}

.form-error {
  font-size: 11px;
  color: var(--color-error);
}

/* Select 样式 */
.form-select {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239ca3af' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.form-select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(129, 140, 248, 0.25);
}

/* Textarea 样式 */
.form-textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  resize: vertical;
  min-height: 100px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(129, 140, 248, 0.25);
}

/* ============= 按钮样式 ============= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(37, 99, 235, 0.6);
}

/* primary-btn 别名，与 btn-primary 样式一致 */
.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  border: none;
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.primary-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(37, 99, 235, 0.6);
}

.primary-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--border-color-hover);
  background: var(--bg-card-hover);
}

.btn-danger {
  background: var(--gradient-danger);
  color: #fff;
  box-shadow: 0 12px 28px rgba(239, 68, 68, 0.45);
}

.btn-danger:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(239, 68, 68, 0.6);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

/* 内联小按钮 */
.btn-inline {
  padding: 6px 12px;
  font-size: 12px;
  border-radius: var(--radius-sm);
}

/* ============= 链接样式 ============= */
.link-inline {
  color: #93c5fd;
  text-decoration: none;
  transition: color 0.2s;
}

.link-inline:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
}

/* ============= 卡片组件 ============= */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.2s;
}

.card:hover::before {
  opacity: 1;
}

.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(--border-color);
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.card-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
}

.card-body {
  color: var(--text-secondary);
}

.card-footer {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: var(--space-sm);
}

/* ============= 数据网格/列表 ============= */
.data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}

.data-item {
  padding: var(--space-md);
  background: rgba(15, 23, 42, 0.6);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
}

.data-item-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.data-item-value {
  font-size: 15px;
  color: var(--text-primary);
  font-weight: 500;
}

/* ============= 表格样式 ============= */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  background: rgba(15, 23, 42, 0.8);
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-table tbody tr {
  transition: background 0.15s;
}

.data-table tbody tr:hover {
  background: rgba(59, 130, 246, 0.05);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

/* ============= 徽章/标签 ============= */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-primary-light);
}

.badge-success {
  background: rgba(34, 197, 94, 0.15);
  color: var(--color-success);
}

.badge-error {
  background: rgba(239, 68, 68, 0.15);
  color: var(--color-error);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-warning);
}

/* ============= 头像 ============= */
.avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border-color);
}

.avatar-lg {
  width: 96px;
  height: 96px;
  border-width: 3px;
}

.avatar-xl {
  width: 128px;
  height: 128px;
  border-width: 4px;
}

.avatar-glow {
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
  border-color: var(--color-primary);
}

/* ============= 开关组件 ============= */
.switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch .slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--border-color);
  border-radius: var(--radius-full);
  transition: background 0.2s;
}

.switch .slider::before {
  content: "";
  position: absolute;
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s;
}

.switch input:checked + .slider {
  background: var(--color-primary);
}

.switch input:checked + .slider::before {
  transform: translateX(22px);
}

/* ============= 步骤指示器 ============= */
.steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: var(--space-lg);
}

.step-item {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  background: var(--border-color);
  color: var(--text-muted);
  transition: all 0.2s;
}

.step-item.active {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
}

.step-item.completed {
  background: var(--color-success);
  color: #fff;
}

.step-line {
  width: 40px;
  height: 2px;
  background: var(--border-color);
  transition: background 0.2s;
}

.step-line.completed {
  background: var(--color-success);
}

/* ============= 侧边栏 ============= */
.sidebar {
  width: 260px;
  background: var(--bg-card);
  border-right: 1px solid var(--border-color);
  height: 100vh;
  position: sticky;
  top: 0;
  overflow-y: auto;
  flex-shrink: 0;
}

.sidebar-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-color);
}

.sidebar-nav {
  padding: var(--space-md);
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  margin-bottom: 4px;
  transition: all 0.15s;
}

.sidebar-item:hover {
  background: rgba(59, 130, 246, 0.1);
  color: var(--text-primary);
}

.sidebar-item.active {
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-primary-light);
}

.sidebar-item-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ============= 模态框/弹窗 ============= */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  max-width: 560px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  animation: modalSlideIn 0.25s ease-out;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-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(--border-color);
}

.modal-title {
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.15s;
  font-size: 20px;
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.modal-body {
  margin-bottom: var(--space-md);
}

.modal-footer {
  display: flex;
  gap: var(--space-sm);
  justify-content: flex-end;
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-color);
}

/* ============= Toast 消息 ============= */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  min-width: 300px;
  max-width: min(420px, calc(100vw - 40px));
  padding: 14px 18px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 12px;
  pointer-events: auto;
  animation: toastSlideIn 0.3s ease-out;
  font-size: 14px;
  border: 1px solid transparent;
}

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

.toast.success {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.95), rgba(21, 128, 61, 0.95));
  color: #ecfdf5;
  border-color: rgba(74, 222, 128, 0.3);
}

.toast.error {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.95), rgba(153, 27, 27, 0.95));
  color: #fee2e2;
  border-color: rgba(252, 165, 165, 0.3);
}

.toast.info {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.95), rgba(29, 78, 216, 0.95));
  color: #eff6ff;
  border-color: rgba(147, 197, 253, 0.3);
}

.toast.warning {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.95), rgba(180, 83, 9, 0.95));
  color: #fffbeb;
  border-color: rgba(254, 215, 170, 0.3);
}

.toast-icon {
  font-size: 18px;
  flex-shrink: 0;
}

.toast-content {
  flex: 1;
}

.toast-close {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.8);
  font-size: 18px;
  cursor: pointer;
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all 0.15s;
  flex-shrink: 0;
}

.toast-close:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* ============= 确认对话框 ============= */
.confirm-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.confirm-modal-overlay.active {
  display: flex;
}

.confirm-modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  max-width: 400px;
  width: 100%;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  animation: modalSlideIn 0.25s ease-out;
}

.confirm-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-color);
}

.confirm-modal-header h2 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
}

.confirm-modal-close {
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all 0.15s;
}

.confirm-modal-close:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.confirm-modal-body {
  margin-bottom: var(--space-md);
}

.confirm-modal-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
  white-space: pre-line;
}

.confirm-modal-footer {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.confirm-modal-btn {
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}

.confirm-modal-btn-primary {
  border: none;
  background: var(--gradient-danger);
  color: #fff;
  box-shadow: 0 8px 20px rgba(239, 68, 68, 0.35);
}

.confirm-modal-btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(239, 68, 68, 0.5);
}

.confirm-modal-btn-secondary {
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
}

.confirm-modal-btn-secondary:hover {
  border-color: var(--border-color-hover);
}

/* ============= 加载状态 ============= */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  color: var(--text-secondary);
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border-color);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============= VIP 卡片 ============= */
.vip-card {
  padding: var(--space-md);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(99, 102, 241, 0.2));
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.vip-card.expired {
  background: rgba(107, 114, 128, 0.2);
  border-color: var(--border-color);
}

.vip-type {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.vip-days {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary-light);
}

.vip-card.expired .vip-days {
  color: var(--text-muted);
}

.vip-expire {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ============= 页脚链接 ============= */
.shell-footer {
  margin-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
}

.shell-footer span.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent-glow);
  display: inline-block;
  margin-right: 6px;
}

.shell-footer a {
  color: var(--text-muted);
  text-decoration: none;
}

.shell-footer a:hover {
  color: var(--text-secondary);
  text-decoration: underline;
}

.form-footer-links {
  margin-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  text-align: center;
}

/* ============= 响应式 ============= */
@media (max-width: 768px) {
  .page-content {
    padding: var(--space-md);
  }
  
  .nav-inner {
    padding: 10px 16px;
  }
  
  .shell-centered-card {
    padding: 24px 20px;
  }
  
  .data-grid {
    grid-template-columns: 1fr;
  }
  
  .toast-container {
    top: 10px;
    right: 10px;
    left: 10px;
  }
  
  .toast {
    min-width: auto;
    width: 100%;
  }
  
  .sidebar {
    display: none;
  }
  
  .modal {
    margin: 10px;
    padding: var(--space-md);
  }
}

/* ============= 滚动条样式 ============= */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

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

/* ============= 工具类 ============= */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }
.text-warning { color: var(--color-warning); }

.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); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }

.hidden { display: none !important; }
.visible { display: block !important; }