/* ☁️ 云翼·长生 - 深色科技风 */

:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d23;
  --bg-tertiary: #22252d;
  --bg-sidebar: #12141a;
  --accent: #0078D4;
  --accent-hover: #1a8aef;
  --accent-glow: rgba(0, 120, 212, 0.15);
  --text-primary: #e8eaed;
  --text-secondary: #9aa0a6;
  --text-muted: #5f6368;
  --border: #2d3139;
  --success: #34d399;
  --danger: #ef4444;
  --warning: #f59e0b;
  --purple: #a78bfa;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.2s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

/* === 登录页 === */
.login-container {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: radial-gradient(ellipse at 50% 0%, var(--accent-glow), transparent 60%);
}
.login-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px 40px;
  width: 400px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 40px var(--accent-glow);
  animation: fadeUp 0.5s ease;
}
.login-logo { font-size: 56px; margin-bottom: 8px; }
.login-title { font-size: 28px; font-weight: 700; margin-bottom: 4px; }
.login-subtitle { color: var(--text-secondary); margin-bottom: 32px; font-size: 14px; }
.login-footer { color: var(--text-muted); font-size: 12px; margin-top: 24px; letter-spacing: 4px; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === 输入框 === */
.input-group { margin-bottom: 16px; text-align: left; position: relative; }
.input-group label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }
.input-group input, .input-group select {
  width: 100%; padding: 12px 16px; padding-left: 40px;
  background: var(--bg-tertiary); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-primary);
  font-size: 14px; outline: none; transition: border var(--transition);
}
.input-group input:focus, .input-group select:focus { border-color: var(--accent); }
.input-group label + input, .input-group label + select { padding-left: 16px; }
.input-icon {
  position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
  font-size: 16px; z-index: 1;
}
.input-help { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.input-sm { padding: 8px 12px !important; font-size: 13px !important; width: 180px !important; }

/* === 按钮 === */
.btn {
  padding: 10px 20px; border: none; border-radius: var(--radius-sm);
  cursor: pointer; font-size: 14px; font-weight: 600;
  transition: all var(--transition); display: inline-flex; align-items: center; gap: 6px;
}
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 4px 16px var(--accent-glow); }
.btn-secondary { background: var(--bg-tertiary); color: var(--text-primary); border: 1px solid var(--border); }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { opacity: 0.9; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-full { width: 100%; justify-content: center; padding: 14px; font-size: 16px; margin-top: 8px; }
.btn-link { background: none; border: none; color: var(--text-secondary); cursor: pointer; font-size: 13px; }
.btn-link:hover { color: var(--accent); }

/* === 布局 === */
.page { display: none; }
.page.active { display: block; }
.layout { display: flex; min-height: 100vh; }

/* === 侧边栏 === */
.sidebar {
  width: 220px; background: var(--bg-sidebar); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; position: fixed; height: 100vh; z-index: 10;
}
.sidebar-logo {
  padding: 24px 20px; display: flex; align-items: center; gap: 10px;
  border-bottom: 1px solid var(--border);
}
.logo-icon { font-size: 28px; }
.logo-text { font-size: 18px; font-weight: 700; }
.sidebar-nav { flex: 1; padding: 12px 8px; }
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; margin: 4px 0;
  border-radius: var(--radius-sm); color: var(--text-secondary);
  text-decoration: none; transition: all var(--transition); font-size: 14px;
}
.nav-item:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.nav-item.active { background: var(--accent); color: white; }
.nav-icon { font-size: 18px; width: 24px; text-align: center; }
.sidebar-footer {
  padding: 16px 20px; border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 13px; color: var(--text-secondary);
}

/* === 主内容 === */
.main-content { flex: 1; margin-left: 220px; padding: 28px 32px; }
.content-page { display: none; animation: fadeUp 0.3s ease; }
.content-page.active { display: block; }
.page-title { font-size: 24px; font-weight: 700; margin-bottom: 24px; }

/* === 统计卡片 === */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
.stat-card {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.3); }
.stat-blue { border-left: 3px solid var(--accent); }
.stat-green { border-left: 3px solid var(--success); }
.stat-cyan { border-left: 3px solid #06b6d4; }
.stat-purple { border-left: 3px solid var(--purple); }
.stat-icon { font-size: 24px; margin-bottom: 8px; }
.stat-value { font-size: 32px; font-weight: 800; margin-bottom: 4px; }
.stat-label { font-size: 13px; color: var(--text-secondary); }

/* === 卡片 === */
.card {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px; margin-bottom: 20px;
}
.card-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; }
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px; flex-wrap: wrap; gap: 12px;
}
.card-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* === 表格 === */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead th {
  text-align: left; padding: 12px 16px; font-size: 12px;
  color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px;
  background: var(--bg-tertiary); border-bottom: 1px solid var(--border);
}
tbody td {
  padding: 12px 16px; font-size: 13px; border-bottom: 1px solid var(--border);
}
tbody tr { transition: background var(--transition); }
tbody tr:hover { background: var(--bg-tertiary); }

/* === 状态标记 === */
.badge {
  display: inline-block; padding: 3px 10px; border-radius: 20px;
  font-size: 11px; font-weight: 600;
}
.badge-success { background: rgba(52,211,153,0.15); color: var(--success); }
.badge-danger { background: rgba(239,68,68,0.15); color: var(--danger); }
.badge-warning { background: rgba(245,158,11,0.15); color: var(--warning); }
.status-dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px;
}
.status-online { background: var(--success); box-shadow: 0 0 8px var(--success); }
.status-offline { background: var(--danger); }

/* === 分页 === */
.pagination {
  display: flex; align-items: center; justify-content: center;
  gap: 8px; margin-top: 16px;
}
.pagination button {
  padding: 6px 12px; border: 1px solid var(--border); background: var(--bg-tertiary);
  color: var(--text-primary); border-radius: 6px; cursor: pointer; font-size: 13px;
}
.pagination button.active { background: var(--accent); border-color: var(--accent); }
.pagination button:hover:not(.active) { border-color: var(--accent); }

/* === 弹窗 === */
.modal { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; }
.modal-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); }
.modal-content {
  position: relative; background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px; width: 420px; max-width: 90vw;
  animation: fadeUp 0.3s ease;
}
.modal-content h2 { margin-bottom: 20px; font-size: 18px; }
.modal-actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 20px; }

/* === Toast === */
.toast {
  position: fixed; top: 20px; right: 20px; z-index: 200;
  padding: 14px 24px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500; opacity: 0;
  transform: translateX(100px); transition: all 0.3s ease;
  max-width: 360px;
}
.toast.show { opacity: 1; transform: translateX(0); }
.toast.success { background: var(--success); color: #000; }
.toast.error { background: var(--danger); color: #fff; }

/* === 表单内联 === */
.form-inline {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.form-inline select, .form-inline input {
  padding: 10px 14px; background: var(--bg-tertiary); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-primary); font-size: 14px; outline: none;
}
.form-inline select:focus, .form-inline input:focus { border-color: var(--accent); }

/* === Dashboard 网格 === */
.dashboard-grid { display: grid; gap: 20px; }

/* === 响应式 === */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .sidebar { width: 60px; }
  .sidebar .logo-text, .sidebar .nav-item span:last-child, .sidebar-footer span { display: none; }
  .main-content { margin-left: 60px; }
  .nav-item { justify-content: center; padding: 12px; }
  .nav-icon { margin: 0; }
}