:root {
  --primary: #6c63ff;
  --primary-hover: #5a52d5;
  --bg-dark: #0f0f23;
  --bg-panel: rgba(26, 26, 46, 0.8);
  --text-main: #f5f5f5;
  --text-muted: #8888aa;
  --danger: #ff4757;
  --border: rgba(108, 99, 255, 0.2);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
}

/* 玻璃态 */
.glass {
  background: var(--bg-panel);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 12px;
}

/* 通用组件 */
.hidden { display: none !important; }
.full-width { width: 100%; }
.mt-sm { margin-top: 10px; }
.mb-md { margin-bottom: 20px; }
.block { display: block; width: 100%; }

.btn {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.3s;
  background: rgba(255,255,255,0.1);
  color: #fff;
}
.btn:hover { background: rgba(255,255,255,0.2); }
.btn.primary { background: var(--primary); }
.btn.primary:hover { background: var(--primary-hover); }
.btn.danger { background: var(--danger); }
.btn.danger:hover { opacity: 0.9; }
.icon-btn { background: transparent; font-size: 24px; padding: 4px 8px; }

/* Config Tabs */
.config-tabs { border-bottom: 2px solid rgba(255,255,255,0.1); }
.config-tab { background: transparent; border-radius: 6px 6px 0 0; padding: 10px 20px; color: var(--text-muted); }
.config-tab:hover { color: #fff; }
.config-tab.active { background: rgba(108, 99, 255, 0.2); color: #fff; border-bottom: 3px solid var(--primary); font-weight: bold; }

input, select {
  width: 100%;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.2);
  color: #fff;
  outline: none;
}
input:focus, select:focus {
  border-color: var(--primary);
}
select option {
  background-color: var(--bg-panel);
  color: #fff;
}
input:focus, select:focus { border-color: var(--primary); }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 14px; color: var(--text-muted); }

/* 登录页 */
#login-view {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  width: 90%;
  max-width: 400px;
  padding: 30px;
}
.login-card h2 { text-align: center; margin-bottom: 24px; }

/* 主布局 */
#app-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.mobile-header {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
}

/* 侧边栏 */
#sidebar {
  width: 260px;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
}

.sidebar-header { padding: 20px; border-bottom: 1px solid var(--border); }
.role-badge { display: inline-block; background: var(--primary); font-size: 12px; padding: 2px 8px; border-radius: 10px; margin-top: 6px; }

.sidebar-nav { flex: 1; padding: 20px 0; }
.nav-item {
  display: block;
  padding: 12px 20px;
  color: var(--text-muted);
  text-decoration: none;
  transition: all 0.2s;
}
.nav-item:hover { color: #fff; background: rgba(255,255,255,0.05); }
.nav-item.active { color: #fff; background: rgba(108, 99, 255, 0.2); border-left: 4px solid var(--primary); }

.sidebar-footer { padding: 20px; border-top: 1px solid var(--border); }

/* 主内容区 */
#main-content {
  flex: 1;
  padding: 30px;
  overflow-y: auto;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.page-view h2 { margin-bottom: 20px; }

/* 统计卡片 */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; }
.stat-card { padding: 24px; text-align: center; }
.stat-card h3 { color: var(--text-muted); font-size: 16px; font-weight: normal; }
.stat-num { font-size: 36px; font-weight: bold; margin-top: 10px; color: var(--primary); }

/* 表格 */
.table-container { overflow-x: auto; padding: 1px; }
.data-table { width: 100%; border-collapse: collapse; min-width: 600px; }
.data-table th, .data-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); }
.data-table th { color: var(--text-muted); font-weight: 500; font-size: 14px; }
.data-table tbody tr:hover { background: rgba(255,255,255,0.05); }

.avatar-sm { width: 32px; height: 32px; border-radius: 50%; vertical-align: middle; }

/* Modal & Toast (替代 alert/confirm) */
#toast-container { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); z-index: 9999; display: flex; flex-direction: column; gap: 10px; }
.toast { background: var(--bg-panel); border: 1px solid var(--border); padding: 12px 24px; border-radius: 8px; color: #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.3); animation: slideDown 0.3s ease forwards; }
.toast.error { border-color: var(--danger); }
@keyframes slideDown { from { transform: translateY(-20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

#modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); z-index: 1000; display: flex; align-items: center; justify-content: center; }
.modal { background: #16162b; border: 1px solid var(--border); border-radius: 12px; padding: 24px; width: 90%; max-width: 400px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); }
.modal h3 { margin-bottom: 12px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 12px; margin-top: 24px; }

/* 响应式 Mobile */
@media (max-width: 768px) {
  #app-layout { flex-direction: column; }
  .mobile-header { display: flex; }
  #sidebar { position: fixed; top: 60px; left: -100%; bottom: 0; z-index: 100; background: #0f0f23; }
  #sidebar.open { left: 0; transform: translateX(0); }
  #main-content { padding: 16px; }
}