/* ========== CSS变量定义 ========== */
:root {
  /* 主色调 - 天际蔚蓝系 (Sky Blue) */
  --primary-color: #0ea5e9;       /* 核心天蓝 */
  --primary-hover: #0284c7;       /* 深天蓝 hover */
  --primary-glow: rgba(14, 165, 233, 0.5);
  --secondary-color: #3b82f6;     /* 明亮蓝 - 用于渐变搭配 */
  --tertiary-color: #06b6d4;      /* 青色 - 保持不变，配合天蓝很合适 */
  --accent-color: #60a5fa;        /* 柔和蓝 - 替代原本的粉色 */
  
  /* 状态色 - 保持通用 */
  --success-color: #10b981;
  --success-glow: rgba(16, 185, 129, 0.4);
  --error-color: #ef4444;
  --error-glow: rgba(239, 68, 68, 0.4);
  --warning-color: #f59e0b;
  --warning-glow: rgba(245, 158, 11, 0.4);
  --info-color: #3b82f6;
  --info-glow: rgba(59, 130, 246, 0.4);
  
  /* 浅色模式背景 - 晴空万里 (Clear Sky) */
  --bg-gradient-start: #e0f2fe;   /* 极淡的蓝 */
  --bg-gradient-mid: #f0f9ff;     /* 接近白色的蓝 */
  --bg-gradient-end: #cffafe;     /* 淡青色 */
  
  /* 极光光斑 - 蓝青色系 */
  --aurora-1: rgba(14, 165, 233, 0.15); /* 主天蓝 */
  --aurora-2: rgba(59, 130, 246, 0.12); /* 明亮蓝 */
  --aurora-3: rgba(6, 182, 212, 0.10);  /* 青色 */
  --aurora-4: rgba(186, 230, 253, 0.20); /* 云白色 */
  
  /* 基础文本与背景 */
  --bg-color: #f0f9ff;
  --text-color: #0f172a;          /* 深蓝灰，比纯黑更契合蓝色主题 */
  --text-secondary: #475569;      /* 次级蓝灰 */
  --text-muted: #94a3b8;
  
  /* 边框与阴影 - 带轻微蓝色倾向 */
  --border-color: rgba(14, 165, 233, 0.2); 
  --shadow-color: rgba(14, 165, 233, 0.08);
  --shadow-heavy: rgba(15, 23, 42, 0.1);
  
  /* 玻璃效果 - 增加通透感 */
  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-bg-hover: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(255, 255, 255, 0.6);
  --glass-border-hover: rgba(255, 255, 255, 0.9);
  --glass-shine: linear-gradient(135deg, rgba(255,255,255,0.5) 0%, transparent 50%);
  
  --card-bg: rgba(255, 255, 255, 0.75);
  --card-bg-solid: rgba(255, 255, 255, 0.95);
  --input-bg: rgba(255, 255, 255, 0.85);
  --input-bg-focus: rgba(255, 255, 255, 0.98);
  
  /* 动画时间 */
  --transition-fast: 0.15s;
  --transition-base: 0.3s;
  --transition-slow: 0.5s;
  --transition-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* 暗色主题 - 深夜极光 */
[data-theme="dark"] {
  --bg-gradient-start: #0f172a;
  --bg-gradient-mid: #1e1b4b;
  --bg-gradient-end: #172554;
  
  --aurora-1: rgba(99, 102, 241, 0.2);
  --aurora-2: rgba(139, 92, 246, 0.18);
  --aurora-3: rgba(6, 182, 212, 0.15);
  --aurora-4: rgba(244, 114, 182, 0.12);
  
  --bg-color: #0f172a;
  --text-color: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: rgba(148, 163, 184, 0.15);
  --shadow-color: rgba(0, 0, 0, 0.3);
  --shadow-heavy: rgba(0, 0, 0, 0.5);
  
  --glass-bg: rgba(15, 23, 42, 0.6);
  --glass-bg-hover: rgba(15, 23, 42, 0.75);
  --glass-border: rgba(148, 163, 184, 0.15);
  --glass-border-hover: rgba(148, 163, 184, 0.3);
  --glass-shine: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, transparent 50%);
  
  --card-bg: rgba(30, 41, 59, 0.7);
  --card-bg-solid: rgba(30, 41, 59, 0.95);
  --input-bg: rgba(30, 41, 59, 0.8);
  --input-bg-focus: rgba(30, 41, 59, 0.95);
}

/* ========== 全局样式 ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-mid) 50%, var(--bg-gradient-end) 100%);
  background-attachment: fixed;
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 0;
  overflow-x: hidden;
  transition: background var(--transition-slow) var(--transition-smooth);
}

/* 极光背景层 */
body::before,
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
}

body::before {
  background: 
    radial-gradient(ellipse 80% 50% at 20% 40%, var(--aurora-1) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 80% 20%, var(--aurora-2) 0%, transparent 50%),
    radial-gradient(ellipse 50% 60% at 40% 80%, var(--aurora-3) 0%, transparent 50%),
    radial-gradient(ellipse 70% 30% at 70% 70%, var(--aurora-4) 0%, transparent 50%);
  animation: auroraShift 20s ease-in-out infinite;
}

body::after {
  background: 
    radial-gradient(ellipse 40% 80% at 60% 30%, var(--aurora-2) 0%, transparent 40%),
    radial-gradient(ellipse 50% 50% at 30% 60%, var(--aurora-3) 0%, transparent 40%);
  animation: auroraFloat 15s ease-in-out infinite reverse;
  opacity: 0.7;
}

@keyframes auroraShift {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg) scale(1);
    opacity: 1;
  }
  25% {
    transform: translate(2%, -2%) rotate(1deg) scale(1.02);
    opacity: 0.9;
  }
  50% {
    transform: translate(-1%, 1%) rotate(-0.5deg) scale(0.98);
    opacity: 0.85;
  }
  75% {
    transform: translate(1%, 2%) rotate(0.5deg) scale(1.01);
    opacity: 0.95;
  }
}

@keyframes auroraFloat {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(-3%, 2%) scale(1.05);
  }
  66% {
    transform: translate(2%, -1%) scale(0.95);
  }
}

/* ========== 布局容器 ========== */
.container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* ========== 卡片样式 - 玻璃拟态 2.0 ========== */
.auth-card, .main-card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-radius: 24px;
  padding: 40px;
  box-shadow: 
    0 4px 6px -1px var(--shadow-color),
    0 10px 15px -3px var(--shadow-color),
    0 20px 40px -10px var(--shadow-heavy),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.2);
  border: 1px solid var(--glass-border);
  width: 100%;
  max-width: 420px;
  animation: cardEntrance 0.8s var(--transition-spring) forwards;
  overflow: hidden;
  transition: 
    transform var(--transition-base) var(--transition-smooth),
    box-shadow var(--transition-base) var(--transition-smooth);
}

/* 卡片顶部光泽 */
.auth-card::before, .main-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.5) 20%, 
    rgba(255, 255, 255, 0.8) 50%, 
    rgba(255, 255, 255, 0.5) 80%, 
    transparent 100%);
  opacity: 0.8;
}

/* 卡片悬浮光效 */
.auth-card::after, .main-card::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, var(--primary-glow) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-slow) var(--transition-smooth);
  pointer-events: none;
  z-index: -1;
}

.auth-card:hover, .main-card:hover {
  transform: translateY(-4px);
  box-shadow: 
    0 8px 12px -2px var(--shadow-color),
    0 20px 30px -5px var(--shadow-color),
    0 30px 60px -15px var(--shadow-heavy),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.3);
}

.auth-card:hover::after, .main-card:hover::after {
  opacity: 0.15;
}

.main-card {
  max-width: 1000px;
  margin: 20px 0;
}

@keyframes cardEntrance {
  0% {
    opacity: 0;
    transform: translateY(40px) scale(0.95) rotateX(10deg);
    filter: blur(10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1) rotateX(0);
    filter: blur(0);
  }
}

/* ========== Logo区域 ========== */
.logo {
  text-align: center;
  margin-bottom: 35px;
  position: relative;
}

.logo h1 {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--tertiary-color) 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
  animation: gradientFlow 5s ease infinite;
  position: relative;
  transition: all var(--transition-base);
}

[data-theme="dark"] .logo h1 {
  background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #22d3ee 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo h1::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 2px;
  opacity: 0.6;
  transition: background var(--transition-base);
}

[data-theme="dark"] .logo h1::after {
  background: linear-gradient(90deg, #60a5fa, #a78bfa);
}

@keyframes gradientFlow {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.logo p {
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

/* ========== 表单样式 ========== */
.form-group, .compact-form-group {
  margin-bottom: 22px;
  position: relative;
}

.compact-form-group {
  margin-bottom: 14px;
}

.form-group label, .compact-form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-color);
  font-size: 0.9rem;
  letter-spacing: 0.01em;
  transition: color var(--transition-fast);
}

.compact-form-group label {
  margin-bottom: 6px;
  font-size: 0.85rem;
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid var(--border-color);
  border-radius: 14px;
  background: var(--input-bg);
  color: var(--text-color);
  font-size: 15px;
  font-weight: 500;
  backdrop-filter: blur(10px);
  transition: 
    border-color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.compact-form-group .form-control {
  padding: 11px 15px;
  font-size: 0.9rem;
}

.form-control:hover {
  border-color: var(--text-muted);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--input-bg-focus);
  box-shadow: 
    0 0 0 4px var(--primary-glow),
    0 4px 12px -2px var(--shadow-color);
  transform: translateY(-2px);
}

.form-control::placeholder {
  color: var(--text-muted);
  font-weight: 400;
}

/* 输入框焦点时标签变色 */
.form-group:focus-within label,
.compact-form-group:focus-within label {
  color: var(--primary-color);
}

/* ========== 按钮样式 - 高级微交互 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border: none;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  width: 100%;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: 
    transform var(--transition-fast) var(--transition-bounce),
    box-shadow var(--transition-base) var(--transition-smooth);
}

/* 按钮光泽扫过效果 */
.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.15) 50%, 
    transparent 100%
  );
  transition: left 0.6s var(--transition-smooth);
  z-index: 1;
}

/* 按钮涟漪效果容器 */
.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
  z-index: 0;
}

.btn:hover::before {
  left: 100%;
}

.btn:active::after {
  width: 300px;
  height: 300px;
  opacity: 0;
  transition: width 0.3s, height 0.3s, opacity 0.3s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  box-shadow: 
    0 4px 15px -3px var(--primary-glow),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.2);
  transition: all var(--transition-fast);
}

[data-theme="dark"] .btn-primary {
  background: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 100%);
  box-shadow: 
    0 4px 15px -3px rgba(6, 182, 212, 0.5),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 
    0 8px 25px -5px var(--primary-glow),
    0 15px 35px -10px var(--primary-glow),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] .btn-primary:hover {
  box-shadow: 
    0 8px 25px -5px rgba(6, 182, 212, 0.6),
    0 15px 35px -10px rgba(6, 182, 212, 0.5),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.3);
}

.btn-primary:active {
  transform: translateY(-1px) scale(0.98);
  box-shadow: 
    0 2px 10px -2px var(--primary-glow),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .btn-primary:active {
  box-shadow: 
    0 2px 10px -2px rgba(6, 182, 212, 0.5),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.2);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-primary:disabled:hover {
  transform: none;
}

.btn-secondary {
  background: var(--glass-bg);
  color: var(--text-color);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 8px -2px var(--shadow-color);
  transition: all var(--transition-base);
}

[data-theme="dark"] .btn-secondary {
  background: rgba(51, 65, 85, 0.6);
  color: #e0e7ff;
  border-color: rgba(100, 116, 139, 0.3);
}

.btn-secondary:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px -5px var(--shadow-color);
}

[data-theme="dark"] .btn-secondary:hover {
  background: rgba(71, 85, 105, 0.75);
  border-color: rgba(148, 163, 184, 0.4);
}

.btn-secondary:active {
  transform: translateY(0);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error-color);
  border: 1px solid rgba(239, 68, 68, 0.3);
  box-shadow: 0 2px 8px -2px var(--error-glow);
  transition: all var(--transition-base);
  padding: 5px 10px !important;
  font-size: 0.72rem !important;
  line-height: 1.2 !important;
  border-radius: 8px !important;
}

[data-theme="dark"] .btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  border-color: rgba(239, 68, 68, 0.4);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px -5px var(--error-glow);
}

[data-theme="dark"] .btn-danger:hover {
  background: rgba(239, 68, 68, 0.25);
  border-color: rgba(239, 68, 68, 0.6);
}

.btn-xxs {
  padding: 5px 10px !important;
  font-size: 0.72rem !important;
  line-height: 1.2 !important;
  border-radius: 8px !important;
  background: var(--glass-bg) !important;
  color: var(--text-color) !important;
  border: 1px solid var(--glass-border) !important;
  backdrop-filter: blur(10px) !important;
  box-shadow: 0 2px 8px -2px var(--shadow-color) !important;
}

.btn-xxs:hover {
  background: var(--glass-bg-hover) !important;
  border-color: var(--glass-border-hover) !important;
  box-shadow: 0 4px 12px -3px var(--shadow-color) !important;
}

[data-theme="dark"] .btn-xxs {
  background: rgba(51, 65, 85, 0.6) !important;
  color: #e0e7ff !important;
  border-color: rgba(100, 116, 139, 0.3) !important;
}

[data-theme="dark"] .btn-xxs:hover {
  background: rgba(71, 85, 105, 0.75) !important;
  border-color: rgba(148, 163, 184, 0.4) !important;
}

.btn-unlock {
  background: rgba(148, 163, 184, 0.15) !important;
  color: var(--text-secondary) !important;
  border: 1px solid rgba(148, 163, 184, 0.3) !important;
}

.btn-unlock:hover {
  background: rgba(148, 163, 184, 0.25) !important;
  border-color: rgba(148, 163, 184, 0.5) !important;
}

/* ========== 加载动画 - 优雅脉冲 ========== */
.loading {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  border-top-color: white;
  animation: elegantSpin 0.8s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

@keyframes elegantSpin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  backdrop-filter: blur(8px);
  animation: fadeIn var(--transition-base) var(--transition-smooth);
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  border-right-color: var(--secondary-color);
  animation: 
    elegantSpin 1s cubic-bezier(0.5, 0, 0.5, 1) infinite,
    pulseGlow 2s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% { 
    box-shadow: 0 0 20px var(--primary-glow);
  }
  50% { 
    box-shadow: 0 0 40px var(--primary-glow), 0 0 60px rgba(139, 92, 246, 0.3);
  }
}

/* ========== 消息提示 - 滑入动画 ========== */
.message-container {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 90%;
  width: auto;
  pointer-events: none;
}

.message {
  padding: 16px 24px;
  border-radius: 16px;
  font-size: 14px;
  font-weight: 600;
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid;
  position: relative;
  overflow: hidden;
  min-width: 320px;
  max-width: 600px;
  box-shadow: 
    0 10px 40px -10px var(--shadow-heavy),
    0 4px 12px -2px var(--shadow-color);
  pointer-events: auto;
  opacity: 0;
  transform: translateY(-30px) scale(0.9);
  transition: all 0.4s var(--transition-spring);
}

.message.message-show {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* 消息左侧装饰条 */
.message::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  border-radius: 4px 0 0 4px;
}

/* 消息图标发光效果 */
.message::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 20px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  transform: translateY(-50%);
  animation: messagePulse 2s ease-in-out infinite;
}

@keyframes messagePulse {
  0%, 100% { 
    opacity: 1;
    box-shadow: 0 0 8px currentColor;
  }
  50% { 
    opacity: 0.6;
    box-shadow: 0 0 16px currentColor;
  }
}

.message.message-success, .message.success {
  background: rgba(16, 185, 129, 0.12);
  color: var(--success-color);
  border-color: rgba(16, 185, 129, 0.3);
}

.message.message-success::before, .message.success::before {
  background: linear-gradient(180deg, var(--success-color), #059669);
}

.message.message-error, .message.error {
  background: rgba(239, 68, 68, 0.12);
  color: var(--error-color);
  border-color: rgba(239, 68, 68, 0.3);
}

.message.message-error::before, .message.error::before {
  background: linear-gradient(180deg, var(--error-color), #dc2626);
}

.message.message-warning, .message.warning {
  background: rgba(245, 158, 11, 0.12);
  color: var(--warning-color);
  border-color: rgba(245, 158, 11, 0.3);
}

.message.message-warning::before, .message.warning::before {
  background: linear-gradient(180deg, var(--warning-color), #d97706);
}

.message.message-info, .message.info {
  background: rgba(59, 130, 246, 0.12);
  color: var(--info-color);
  border-color: rgba(59, 130, 246, 0.3);
}

.message.message-info::before, .message.info::before {
  background: linear-gradient(180deg, var(--info-color), #2563eb);
}

/* ========== 主题切换按钮 - 3D翻转 ========== */
.theme-toggle {
  position: fixed;
  top: 24px;
  right: 24px;
  width: 52px;
  height: 52px;
  border: none;
  border-radius: 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  z-index: 1000;
  box-shadow: 
    0 4px 20px -5px var(--shadow-heavy),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.2);
  transition: 
    transform 0.4s var(--transition-spring),
    box-shadow var(--transition-base) var(--transition-smooth),
    background var(--transition-base);
  perspective: 500px;
}

.theme-toggle:hover {
  transform: scale(1.1) rotate(15deg);
  box-shadow: 
    0 8px 30px -8px var(--shadow-heavy),
    0 0 20px -5px var(--primary-glow),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.3);
  background: var(--glass-bg-hover);
}

.theme-toggle:active {
  transform: scale(1.05) rotate(10deg);
}

/* ========== 浮动返回按钮 ========== */
.floating-home-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 52px;
  height: 52px;
  border: none;
  border-radius: 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  z-index: 999;
  box-shadow: 
    0 4px 20px -5px var(--shadow-heavy),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.2);
  transition: 
    transform 0.4s var(--transition-spring),
    box-shadow var(--transition-base) var(--transition-smooth),
    background var(--transition-base);
}

.floating-home-btn:hover {
  transform: scale(1.1) translateY(-4px) rotate(-5deg);
  box-shadow: 
    0 12px 35px -10px var(--shadow-heavy),
    0 0 25px -5px var(--primary-glow),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.3);
  background: var(--glass-bg-hover);
}

.floating-home-btn:active {
  transform: scale(1.02) translateY(-2px);
}

/* ========== 文本样式 ========== */
.text-center {
  text-align: center;
}

.text-small {
  font-size: 0.875rem;
  font-weight: 500;
}

.text-secondary {
  color: var(--text-secondary);
  font-weight: 500;
}

.link {
  color: var(--primary-color);
  text-decoration: none;
  cursor: pointer;
  font-weight: 600;
  position: relative;
  transition: color var(--transition-fast);
}

.link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 1px;
  transition: width var(--transition-base) var(--transition-smooth);
}

.link:hover {
  color: var(--secondary-color);
}

.link:hover::after {
  width: 100%;
}

/* ========== 间距工具类 ========== */
.mt-20 {
  margin-top: 20px;
}

.mb-20 {
  margin-bottom: 20px;
}

/* ========== 密码强度指示器 ========== */
.password-strength {
  margin-top: 10px;
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.password-strength::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  animation: strengthPulse 1.5s ease-in-out infinite;
}

@keyframes strengthPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

.strength-weak {
  color: var(--error-color);
}

.strength-weak::before {
  background: var(--error-color);
  box-shadow: 0 0 10px var(--error-glow);
}

.strength-medium {
  color: var(--warning-color);
}

.strength-medium::before {
  background: var(--warning-color);
  box-shadow: 0 0 10px var(--warning-glow);
}

.strength-strong {
  color: var(--success-color);
}

.strength-strong::before {
  background: var(--success-color);
  box-shadow: 0 0 10px var(--success-glow);
}

/* ========== 用户信息区域 ========== */
.user-info {
  background: var(--glass-bg);
  backdrop-filter: blur(15px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  padding: 24px;
  margin-bottom: 0;
  box-shadow: 
    0 4px 20px -5px var(--shadow-color),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.15);
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-fast);
}

.info-row:last-child {
  border-bottom: none;
}

.info-row:hover {
  background: rgba(99, 102, 241, 0.05);
  margin: 0 -12px;
  padding-left: 12px;
  padding-right: 12px;
  border-radius: 10px;
}

.info-label {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.info-value {
  font-weight: 700;
  color: var(--text-color);
  font-size: 0.95rem;
}

/* ========== 服务网格布局 ========== */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 18px;
  margin: 0;
}

.service-card {
  background: var(--glass-bg);
  backdrop-filter: blur(15px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: 
    0 4px 15px -5px var(--shadow-color),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.15);
  transition: 
    transform 0.4s var(--transition-spring),
    box-shadow var(--transition-base) var(--transition-smooth),
    border-color var(--transition-base);
}

/* 服务卡片顶部光泽 */
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: var(--glass-shine);
  pointer-events: none;
  transition: opacity var(--transition-base);
}

/* 服务卡片悬浮光效 */
.service-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.15) 50%, 
    transparent 100%
  );
  transition: left 0.6s var(--transition-smooth);
  pointer-events: none;
}

.service-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 
    0 20px 40px -15px var(--shadow-heavy),
    0 0 30px -10px var(--primary-glow),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.25);
  border-color: var(--primary-color);
}

.service-card:hover::after {
  left: 100%;
}

.service-card:active {
  transform: translateY(-5px) scale(1);
}

.service-icon {
  font-size: 2.8rem;
  margin-bottom: 14px;
  display: inline-block;
  transition: transform 0.4s var(--transition-spring);
}

.service-card:hover .service-icon {
  transform: scale(1.15) rotate(-5deg);
}

.service-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: 8px;
}

.service-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  line-height: 1.4;
}

/* 无权限的服务卡片 */
.service-card.permission-denied {
  opacity: 0.55;
  cursor: not-allowed;
  position: relative;
}

.service-card.permission-denied::before {
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 10px,
    rgba(239, 68, 68, 0.08) 10px,
    rgba(239, 68, 68, 0.08) 20px
  );
  height: 100%;
  opacity: 1;
}

.service-card.permission-denied:hover {
  transform: none;
  box-shadow: 0 4px 15px -5px var(--shadow-color);
  border-color: var(--error-color);
}

.service-card.permission-denied:hover .service-icon {
  transform: none;
}

/* ========== 服务状态指示器 ========== */
.service-status {
  margin-top: 16px;
  font-size: 12px;
}

.status-indicator {
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.status-indicator::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
  0%, 100% { 
    opacity: 1;
    transform: scale(1);
  }
  50% { 
    opacity: 0.6;
    transform: scale(1.3);
  }
}

.status-indicator.online,
.status-indicator.available {
  background: rgba(16, 185, 129, 0.12);
  color: var(--success-color);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.status-indicator.online::before,
.status-indicator.available::before {
  background: var(--success-color);
  box-shadow: 0 0 8px var(--success-glow);
}

.status-indicator.offline {
  background: rgba(239, 68, 68, 0.12);
  color: var(--error-color);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.status-indicator.offline::before {
  background: var(--error-color);
  box-shadow: 0 0 8px var(--error-glow);
  animation: none;
}

.status-indicator.timeout {
  background: rgba(245, 158, 11, 0.12);
  color: var(--warning-color);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.status-indicator.timeout::before {
  background: var(--warning-color);
  box-shadow: 0 0 8px var(--warning-glow);
}

.status-indicator.checking {
  background: rgba(59, 130, 246, 0.12);
  color: var(--info-color);
  border: 1px solid rgba(59, 130, 246, 0.25);
}

.status-indicator.checking::before {
  background: var(--info-color);
  box-shadow: 0 0 8px var(--info-glow);
  animation: checkingPulse 1s ease-in-out infinite;
}

@keyframes checkingPulse {
  0%, 100% { 
    opacity: 0.4;
    transform: scale(0.8);
  }
  50% { 
    opacity: 1;
    transform: scale(1.2);
  }
}

/* ========== 分隔线 ========== */
.section-divider {
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--border-color) 15%,
    var(--primary-color) 50%,
    var(--border-color) 85%,
    transparent
  );
  margin: 32px 0;
  position: relative;
  opacity: 0.6;
}

.section-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 10px;
  height: 10px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  box-shadow: 0 0 15px var(--primary-glow);
  animation: dividerPulse 3s ease-in-out infinite;
}

@keyframes dividerPulse {
  0%, 100% { 
    transform: translate(-50%, -50%) scale(1);
    box-shadow: 0 0 15px var(--primary-glow);
  }
  50% { 
    transform: translate(-50%, -50%) scale(1.2);
    box-shadow: 0 0 25px var(--primary-glow), 0 0 40px rgba(139, 92, 246, 0.3);
  }
}

/* ========== 操作按钮区域 ========== */
.action-buttons {
  display: flex;
  gap: 14px;
  margin: 0;
}

.action-buttons .btn {
  flex: 1;
}

/* ========== 模态框样式 ========== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(12px) saturate(180%);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: modalFadeIn 0.3s var(--transition-smooth);
}

@keyframes modalFadeIn {
  from { 
    opacity: 0;
    backdrop-filter: blur(0);
  }
  to { 
    opacity: 1;
    backdrop-filter: blur(12px) saturate(180%);
  }
}

.modal-content {
  background: var(--card-bg-solid);
  backdrop-filter: blur(25px) saturate(200%);
  border-radius: 24px;
  padding: 36px;
  max-width: 500px;
  width: 90%;
  border: 1px solid var(--glass-border);
  box-shadow: 
    0 25px 80px -20px rgba(0, 0, 0, 0.5),
    0 10px 30px -10px var(--shadow-heavy),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.2);
  animation: modalSlideIn 0.4s var(--transition-spring);
  color: var(--text-color);
  position: relative;
  overflow: hidden;
}

/* 模态框顶部光泽 */
.modal-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.6) 20%, 
    rgba(255, 255, 255, 0.9) 50%, 
    rgba(255, 255, 255, 0.6) 80%, 
    transparent 100%);
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(50px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-content h3 {
  color: var(--text-color);
  font-weight: 700;
  margin-bottom: 24px;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
}

.modal-content label {
  color: var(--text-color);
  font-weight: 600;
  display: block;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.modal-content input[type="text"],
.modal-content input[type="number"] {
  background: var(--input-bg);
  color: var(--text-color);
  border: 2px solid var(--border-color);
  font-weight: 500;
  transition: 
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.modal-content input[type="text"]:focus,
.modal-content input[type="number"]:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px var(--primary-glow);
  transform: translateY(-1px);
}

/* ========== 管理端样式 ========== */
.admin-header {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  padding: 20px 24px;
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 
    0 4px 20px -5px var(--shadow-color),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.15);
}

.admin-header-left h1 {
  font-size: 1.6rem;
  margin: 0 0 6px 0;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--tertiary-color));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientFlow 5s ease infinite;
  font-weight: 800;
}

.admin-header-left p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.admin-header-right {
  display: flex;
  gap: 24px;
  align-items: center;
}

.admin-info-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
}

.admin-info-label {
  color: var(--text-secondary);
  font-weight: 500;
}

.admin-info-value {
  color: var(--text-color);
  font-weight: 700;
}

.admin-top-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.admin-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  box-shadow: 
    0 8px 30px -10px var(--shadow-color),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.15);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 500px;
  transition: box-shadow var(--transition-base);
}

.admin-panel:hover {
  box-shadow: 
    0 12px 40px -10px var(--shadow-heavy),
    0 0 30px -15px var(--primary-glow),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.2);
}

.admin-panel-header {
  padding: 18px 24px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--glass-border);
  font-weight: 700;
  color: var(--text-color);
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.admin-panel-body {
  padding: 20px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.user-list-panel {
  min-height: 700px;
}

.logs-panel {
  min-height: 700px;
  margin-top: 24px;
}

.header-actions {
  display: flex;
  gap: 12px;
  margin-left: auto;
}

.header-actions .btn {
  padding: 8px 16px;
  font-size: 0.85rem;
  background: var(--glass-bg);
  color: var(--text-color);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 8px -2px var(--shadow-color);
  transition: all var(--transition-base);
}

.header-actions .btn:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px -5px var(--shadow-color);
}

[data-theme="dark"] .header-actions .btn {
  background: rgba(51, 65, 85, 0.6);
  color: #e0e7ff;
  border-color: rgba(100, 116, 139, 0.3);
}

[data-theme="dark"] .header-actions .btn:hover {
  background: rgba(71, 85, 105, 0.75);
  border-color: rgba(148, 163, 184, 0.4);
}

.group-form-wrap {
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  padding: 16px;
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
}

.group-form-wrap .form-control {
  height: 40px;
}

.group-form-wrap .btn {
  height: 40px;
  padding: 0 18px;
}

/* ========== 表格样式 ========== */
.table-container {
  flex: 1;
  overflow: auto;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: var(--card-bg);
  max-height: 550px;
}

/* 自定义滚动条 - 表格专用 */
.table-container::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

.table-container::-webkit-scrollbar-track {
  background: var(--glass-bg);
  border-radius: 6px;
}

.table-container::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 6px;
  border: 2px solid var(--glass-bg);
  transition: background var(--transition-base);
}

.table-container::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
  box-shadow: 0 0 10px var(--primary-glow);
}

.table-container::-webkit-scrollbar-corner {
  background: var(--glass-bg);
}

.compact-table,
.full-user-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.full-user-table {
  min-width: 1200px;
}

.compact-table thead th,
.full-user-table thead th {
  position: sticky;
  top: 0;
  background: var(--card-bg-solid);
  padding: 14px 12px;
  text-align: center;
  font-weight: 700;
  color: var(--text-color);
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
  z-index: 10;
  backdrop-filter: blur(10px);
}

.compact-table tbody td,
.full-user-table tbody td {
  padding: 12px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
  color: var(--text-color);
  white-space: nowrap;
  text-align: center;
  transition: background var(--transition-fast);
}

.compact-table tbody tr,
.full-user-table tbody tr {
  transition: background var(--transition-fast);
}

.compact-table tbody tr:hover,
.full-user-table tbody tr:hover {
  background: rgba(99, 102, 241, 0.08);
}

.compact-table select,
.full-user-table select {
  padding: 6px 10px;
  font-size: 0.8rem;
  min-width: 100px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--input-bg);
  color: var(--text-color);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.compact-table select:hover,
.full-user-table select:hover {
  border-color: var(--primary-color);
}

.full-user-table .btn {
  padding: 6px 10px;
  font-size: 0.75rem;
  margin: 2px;
  white-space: nowrap;
}

.empty-state {
  text-align: center;
  padding: 40px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.stats-info {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 12px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  min-height: 28px;
}

/* ========== 状态徽章 ========== */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-top: 4px;
}

.status-badge::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
}

.status-badge.active {
  background: rgba(16, 185, 129, 0.12);
  color: var(--success-color);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.status-badge.active::before {
  background: var(--success-color);
  box-shadow: 0 0 6px var(--success-glow);
  animation: statusPulse 2s ease-in-out infinite;
}

.status-badge.inactive {
  background: rgba(239, 68, 68, 0.12);
  color: var(--error-color);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.status-badge.inactive::before {
  background: var(--error-color);
}

.status-badge.locked {
  background: rgba(245, 158, 11, 0.12);
  color: var(--warning-color);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.status-badge.locked::before {
  background: var(--warning-color);
  box-shadow: 0 0 6px var(--warning-glow);
}

.user-info-cell {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.user-info-cell .username {
  font-weight: 700;
  font-size: 0.85rem;
}

/* ========== 展示页样式 ========== */
.landing-intro {
  color: var(--text-secondary);
  margin-bottom: 30px;
  font-size: 1.05rem;
  line-height: 1.8;
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.note-card {
  background: var(--glass-bg);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 20px;
  border: 1px solid var(--glass-border);
  transition: transform 0.3s;
}
.note-card:hover { transform: translateY(-3px); }
.note-title { font-size: 1.4rem; font-weight: 700; color: var(--text-color); margin-bottom: 10px; }
.note-meta { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 15px; }
.note-content { font-size: 1rem; line-height: 1.7; color: var(--text-color); white-space: pre-wrap; }
.back-nav { margin-bottom: 20px; }

/* ========== 页脚 ========== */
.footer {
  width: 100%;
  text-align: center;
  padding: 30px 20px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  background: transparent; 
  position: relative;
  z-index: 10;
  margin-top: auto;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 1200px;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    var(--border-color) 20%, 
    var(--border-color) 80%, 
    transparent 100%);
  opacity: 0.6;
}

.filing-info {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.filing-info a {
  color: inherit;
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.filing-info a:hover {
  color: var(--primary-color);
}

/* ========== 全局滚动条 ========== */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--glass-bg);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
  border-radius: 5px;
  border: 2px solid var(--glass-bg);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--primary-hover), var(--primary-color));
}

/* ========== 选择文本样式 ========== */
::selection {
  background: var(--primary-color);
  color: white;
}

::-moz-selection {
  background: var(--primary-color);
  color: white;
}

/* ========== 焦点样式 ========== */
:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ========== 高对比度模式支持 ========== */
@media (prefers-contrast: high) {
  :root {
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(0, 0, 0, 0.3);
    --text-color: #000000;
    --text-secondary: #1a1a1a;
  }

  [data-theme="dark"] {
    --glass-bg: rgba(0, 0, 0, 0.95);
    --glass-border: rgba(255, 255, 255, 0.3);
    --text-color: #ffffff;
    --text-secondary: #e5e5e5;
  }
}

/* ========== 减少动画模式支持 ========== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  body::before,
  body::after {
    animation: none !important;
  }
}

/* ========== 打印样式 ========== */
@media print {
  body {
    background: white !important;
    color: black !important;
  }

  body::before,
  body::after {
    display: none !important;
  }

  .theme-toggle,
  .floating-home-btn,
  .message-container,
  .footer {
    display: none !important;
  }

  .auth-card,
  .main-card,
  .admin-panel {
    background: white !important;
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    backdrop-filter: none !important;
  }
}

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
  .container {
    padding: 16px;
  }

  .auth-card, .main-card {
    padding: 28px 24px;
    margin: 12px 0;
    border-radius: 20px;
  }

  .logo h1 {
    font-size: 2rem;
  }

  .logo p {
    font-size: 0.9rem;
  }

  .service-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 14px;
  }

  .service-card {
    padding: 22px 16px;
    border-radius: 16px;
  }

  .service-icon {
    font-size: 2.4rem;
  }

  .theme-toggle {
    width: 46px;
    height: 46px;
    top: 16px;
    right: 16px;
    border-radius: 14px;
  }

  .floating-home-btn {
    bottom: 20px;
    right: 20px;
    width: 46px;
    height: 46px;
    font-size: 1.15rem;
    border-radius: 14px;
  }

  .btn {
    padding: 14px 22px;
    font-size: 15px;
    border-radius: 12px;
  }

  .form-control {
    padding: 13px 16px;
    border-radius: 12px;
  }

  .footer {
    font-size: 0.85rem;
    padding: 22px 16px;
  }

  .section-divider {
    margin: 26px 0;
  }

  .modal-content {
    padding: 28px 22px;
    margin: 20px;
    border-radius: 20px;
  }

  .user-info {
    padding: 18px;
    border-radius: 16px;
  }

  .info-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 14px 0;
  }

  .info-row:hover {
    margin: 0 -10px;
    padding-left: 10px;
    padding-right: 10px;
  }

  .action-buttons {
    flex-direction: column;
    gap: 12px;
  }

  .admin-top-grid {
    grid-template-columns: 1fr;
  }

  .admin-header {
    flex-direction: column;
    gap: 14px;
    padding: 16px 18px;
    border-radius: 16px;
  }

  .admin-header-left h1 {
    font-size: 1.4rem;
  }

  .admin-header-right {
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }

  .admin-panel {
    border-radius: 16px;
  }

  .admin-panel-header {
    padding: 16px 20px;
  }

  .table-container {
    max-height: 420px;
    border-radius: 10px;
  }

  .full-user-table {
    font-size: 0.72rem;
  }

  .full-user-table thead th,
  .full-user-table tbody td {
    padding: 10px 8px;
  }

  .header-actions {
    flex-wrap: wrap;
  }

  .group-form-wrap {
    grid-template-columns: 1fr;
    padding: 14px;
    border-radius: 12px;
  }

  .message-container {
    top: 16px;
    max-width: 94%;
  }

  .message {
    min-width: 260px;
    padding: 14px 20px;
    font-size: 13px;
    border-radius: 14px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 12px;
  }

  .auth-card, .main-card {
    padding: 24px 20px;
    border-radius: 18px;
  }

  .logo h1 {
    font-size: 1.75rem;
  }

  .logo h1::after {
    width: 50px;
    height: 2px;
  }

  .service-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .service-card {
    padding: 20px 16px;
    border-radius: 14px;
  }

  .service-icon {
    font-size: 2.2rem;
    margin-bottom: 10px;
  }

  .service-name {
    font-size: 1rem;
  }

  .service-desc {
    font-size: 0.8rem;
  }

  .footer {
    font-size: 0.8rem;
    padding: 20px 14px;
    line-height: 1.5;
  }

  .floating-home-btn {
    bottom: 16px;
    right: 16px;
    width: 44px;
    height: 44px;
    font-size: 1.1rem;
    border-radius: 12px;
  }

  .theme-toggle {
    width: 44px;
    height: 44px;
    top: 14px;
    right: 14px;
    border-radius: 12px;
    font-size: 1.2rem;
  }

  .modal-content {
    padding: 22px 18px;
    margin: 14px;
    border-radius: 18px;
  }

  .modal-content h3 {
    font-size: 1.25rem;
    margin-bottom: 20px;
  }

  .user-info {
    padding: 16px;
    border-radius: 14px;
  }

  .table-container {
    max-height: 360px;
    border-radius: 8px;
  }

  .full-user-table {
    font-size: 0.65rem;
    min-width: 1000px;
  }

  .full-user-table .btn {
    padding: 5px 8px;
    font-size: 0.68rem;
    border-radius: 6px;
  }

  .message-container {
    top: 12px;
  }

  .message {
    min-width: 220px;
    max-width: 100%;
    padding: 12px 16px;
    font-size: 12px;
    border-radius: 12px;
  }

  .btn {
    padding: 13px 20px;
    font-size: 14px;
    border-radius: 11px;
  }

  .form-control {
    padding: 12px 14px;
    font-size: 14px;
    border-radius: 11px;
  }

  .section-divider {
    margin: 22px 0;
  }

  .section-divider::before {
    width: 8px;
    height: 8px;
  }
}

/* ========== 超宽屏优化 ========== */
@media (min-width: 1400px) {
  .container {
    max-width: 1320px;
  }

  .main-card {
    max-width: 1100px;
  }

  .service-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 22px;
  }

  .service-card {
    padding: 32px 24px;
  }

  .admin-top-grid {
    gap: 28px;
  }
}

/* ========== 触摸设备优化 ========== */
@media (hover: none) and (pointer: coarse) {
  .btn:hover {
    transform: none;
  }

  .btn:active {
    transform: scale(0.97);
  }

  .service-card:hover {
    transform: none;
  }

  .service-card:active {
    transform: scale(0.98);
  }

  .theme-toggle:hover,
  .floating-home-btn:hover {
    transform: none;
  }

  .theme-toggle:active,
  .floating-home-btn:active {
    transform: scale(0.95);
  }

  /* 增大触摸目标 */
  .btn {
    min-height: 48px;
  }

  .form-control {
    min-height: 48px;
  }

  .theme-toggle,
  .floating-home-btn {
    min-width: 48px;
    min-height: 48px;
  }
}

/* ========== 横屏手机优化 ========== */
@media (max-height: 500px) and (orientation: landscape) {
  .container {
    min-height: auto;
    padding: 12px;
  }

  .auth-card {
    padding: 20px 28px;
    max-width: 500px;
  }

  .logo {
    margin-bottom: 16px;
  }

  .logo h1 {
    font-size: 1.6rem;
  }

  .form-group {
    margin-bottom: 14px;
  }

  .section-divider {
    margin: 16px 0;
  }
}