/* SESO 前端用户页面样式 */
:root {
  /* 主色调 - 现代蓝绿渐变 */
  --primary: #06b6d4;          /* cyan-500 */
  --primary-dark: #0891b2;     /* cyan-600 */
  --primary-light: #67e8f9;    /* cyan-300 */
  --secondary: #3b82f6;        /* blue-500 */
  --accent: #8b5cf6;           /* violet-500 */
  
  /* 状态色彩 */
  --success: #10b981;          /* emerald-500 */
  --warning: #f59e0b;          /* amber-500 */
  --error: #ef4444;            /* red-500 */
  --info: #3b82f6;             /* blue-500 */
  
  /* 中性色 */
  --background: #f8fafc;       /* slate-50 */
  --surface: #ffffff;
  --surface-light: #f1f5f9;    /* slate-100 */
  --text: #0f172a;             /* slate-900 */
  --text-light: #475569;       /* slate-600 */
  --text-muted: #94a3b8;       /* slate-400 */
  --border: #e2e8f0;           /* slate-200 */
  --border-light: #f1f5f9;     /* slate-100 */
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  /* 动画 */
  --transition: all 0.2s ease-in-out;
  --transition-fast: all 0.15s ease-in-out;
}

/* 基础样式重置 */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* 导航栏 */
.navbar {
  /* make navbar styles higher priority to avoid accidental overrides */
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%) !important;
  color: white !important;
  padding: 1rem 0;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 9999; /* ensure navbar sits above other page elements */
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-brand:hover {
  color: var(--primary-light);
  transition: var(--transition);
}

.navbar-nav {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 2rem;
}

.navbar-nav a {
  color: white !important;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  transition: var(--transition);
  font-weight: 500;
}

.navbar-nav a:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.navbar-nav a.active {
  background: rgba(255, 255, 255, 0.2);
}

/* 主要内容区域 */
.main-content {
  padding: 2rem 0;
  min-height: calc(100vh - 160px);
}

/* 卡片组件 */
.card {
  background: var(--surface);
  border-radius: 1rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-header {
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--surface-light) 0%, var(--surface) 100%);
  border-bottom: 1px solid var(--border);
}

.card-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  padding: 1rem 1.5rem;
  background: var(--surface-light);
  border-top: 1px solid var(--border);
}

/* 按钮组件 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--accent) 100%);
  color: white;
}

.btn-secondary:hover:not(:disabled) {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.btn-success {
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
  color: white;
}

.btn-success:hover:not(:disabled) {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.btn-warning {
  background: linear-gradient(135deg, var(--warning) 0%, #d97706 100%);
  color: white;
}

.btn-warning:hover:not(:disabled) {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.btn-danger {
  background: linear-gradient(135deg, var(--error) 0%, #dc2626 100%);
  color: white;
}

.btn-danger:hover:not(:disabled) {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover:not(:disabled) {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
}

/* 表单组件 */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--border);
  border-radius: 0.5rem;
  font-size: 1rem;
  transition: var(--transition);
  background: var(--surface);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

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

/* 状态徽章 */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-success {
  background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
  color: #065f46;
  border: 1px solid #10b981;
}

.badge-warning {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  color: #92400e;
  border: 1px solid #f59e0b;
}

.badge-danger {
  background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
  color: #991b1b;
  border: 1px solid #ef4444;
}

.badge-info {
  background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
  color: #1e40af;
  border: 1px solid #3b82f6;
}

.badge-secondary {
  background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
  color: #475569;
  border: 1px solid #94a3b8;
}

/* 表格组件 */
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: var(--shadow);
}

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

.table th {
  background: linear-gradient(135deg, var(--surface-light) 0%, var(--surface) 100%);
  font-weight: 600;
  color: var(--text);
}

.table tbody tr:hover {
  background: var(--surface-light);
  transition: var(--transition-fast);
}

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

/* 网格布局 */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
}

/* 通知/警告框 */
.alert {
  padding: 1rem 1.5rem;
  border-radius: 0.75rem;
  margin-bottom: 1.5rem;
  border: 1px solid;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.alert-success {
  background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
  border-color: var(--success);
  color: #065f46;
}

.alert-warning {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border-color: var(--warning);
  color: #92400e;
}

.alert-danger {
  background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
  border-color: var(--error);
  color: #991b1b;
}

.alert-info {
  background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
  border-color: var(--info);
  color: #1e40af;
}

/* 统计卡片 */
.stats-card {
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-light) 100%);
  border-radius: 1rem;
  padding: 1.5rem;
  text-align: center;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.stats-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stats-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.stats-label {
  color: var(--text-light);
  font-size: 0.875rem;
  font-weight: 500;
}

/* 渐变背景变化 */
.gradient-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

.gradient-success {
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
}

.gradient-warning {
  background: linear-gradient(135deg, var(--warning) 0%, #d97706 100%);
}

.gradient-danger {
  background: linear-gradient(135deg, var(--error) 0%, #dc2626 100%);
}

/* 页脚 */
.footer {
  background: linear-gradient(135deg, var(--text) 0%, #1e293b 100%);
  color: var(--text-muted);
  padding: 2rem 0;
  text-align: center;
  margin-top: 3rem;
}

.footer a {
  color: var(--primary-light);
  text-decoration: none;
  transition: var(--transition);
}

.footer a:hover {
  color: white;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .container {
    padding: 0 0.5rem;
  }
  
  .navbar .container {
    flex-direction: column;
    gap: 1rem;
  }
  
  .navbar-nav {
    gap: 0.5rem;
  }
  
  .card-body {
    padding: 1rem;
  }
  
  .main-content {
    padding: 1rem 0;
  }
}

/* 动画效果 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.slide-in {
  animation: slideIn 0.4s ease-out;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--surface-light);
}

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

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