:root {
  /* 温柔明亮白偏淡灰高质感调色板 */
  --bg-primary: #f8fafc;        /* 整体淡灰白背景，不刺眼 */
  --bg-secondary: #ffffff;      /* 主卡片纯白 */
  --bg-card: #f1f5f9;           /* 次级区块温暖浅灰 */
  --bg-hover: #e2e8f0;          /* 悬停浅灰 */
  --text-main: #1e293b;         /* 深度灰黑正文，柔和且高对比清晰 */
  --text-muted: #64748b;        /* 辅助说明灰 */
  --accent: #2563eb;            /* 优雅天蓝/群青点缀 */
  --accent-hover: #1d4ed8;
  --success: #16a34a;           /* 柔和翠绿 */
  --warning: #d97706;           /* 温暖琥珀黄 */
  --danger: #dc2626;            /* 柔和玫瑰红 */
  --border: #e2e8f0;            /* 浅灰色纤细边框 */
  --radius: 12px;
  --shadow: 0 4px 16px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -2px rgba(15, 23, 42, 0.03);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  padding: 24px;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
}

/* 顶部导航 */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  font-size: 32px;
}

.title-group h1 {
  font-size: 20px;
  font-weight: 700;
  color: #0f172a;
  letter-spacing: -0.3px;
}

.title-group p {
  font-size: 13px;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* 统计卡片 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -3px rgba(15, 23, 42, 0.08);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--accent);
}

.stat-info .stat-value {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
  color: #0f172a;
}

.stat-info .stat-label {
  font-size: 13px;
  color: var(--text-muted);
}

/* 按钮样式规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.15s ease;
  background: var(--bg-secondary);
  color: var(--text-main);
  text-decoration: none;
}

.btn:hover {
  background: var(--bg-hover);
}

.btn-primary {
  background: #2563eb;
  color: #ffffff;
  border-color: #2563eb;
}

.btn-primary:hover {
  background: #1d4ed8;
  border-color: #1d4ed8;
}

.btn-success {
  background: rgba(22, 163, 74, 0.1);
  color: #15803d;
  border-color: rgba(22, 163, 74, 0.25);
}

.btn-success:hover {
  background: rgba(22, 163, 74, 0.18);
}

.btn-danger {
  background: rgba(220, 38, 38, 0.08);
  color: #b91c1c;
  border-color: rgba(220, 38, 38, 0.25);
}

.btn-danger:hover {
  background: rgba(220, 38, 38, 0.15);
}

.btn-warning {
  background: rgba(217, 119, 6, 0.1);
  color: #b45309;
  border-color: rgba(217, 119, 6, 0.25);
}

.btn-warning:hover {
  background: rgba(217, 119, 6, 0.18);
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
}

/* 账号卡片列表 */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.section-title {
  font-size: 18px;
  font-weight: 700;
  color: #0f172a;
  display: flex;
  align-items: center;
  gap: 8px;
}

.accounts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.account-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  transition: all 0.2s ease;
}

.account-card:hover {
  border-color: #cbd5e1;
  box-shadow: 0 8px 25px -4px rgba(15, 23, 42, 0.08);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.account-main-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.account-avatar {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, #e0e7ff, #ede9fe);
  color: #4338ca;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
}

.account-name-block h3 {
  font-size: 16px;
  font-weight: 700;
  color: #0f172a;
  display: flex;
  align-items: center;
  gap: 8px;
}

.account-phone {
  font-size: 13px;
  color: var(--text-muted);
}

.badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 600;
}

.badge-online {
  background: rgba(22, 163, 74, 0.12);
  color: #16a34a;
  border: 1px solid rgba(22, 163, 74, 0.25);
}

.badge-offline {
  background: rgba(100, 116, 139, 0.1);
  color: #64748b;
  border: 1px solid rgba(100, 116, 139, 0.25);
}

.badge-warning {
  background: rgba(217, 119, 6, 0.12);
  color: #d97706;
  border: 1px solid rgba(217, 119, 6, 0.25);
}

/* 设备码区域 */
.device-box {
  background: var(--bg-card);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid rgba(226, 232, 240, 0.8);
}

.device-code-text {
  font-family: monospace;
  color: #2563eb;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 240px;
}

/* 功能开关列表 */
.features-box {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--bg-card);
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid rgba(226, 232, 240, 0.8);
}

.feature-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #334155;
  font-weight: 500;
}

.switch {
  position: relative;
  display: inline-block;
  width: 38px;
  height: 20px;
}

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

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #cbd5e1;
  transition: 0.2s;
  border-radius: 20px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
  transition: 0.2s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: #2563eb;
}

input:checked + .slider:before {
  transform: translateX(18px);
}

/* 按钮组 */
.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

/* 控制台日志面板 */
.log-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-top: 24px;
}

.log-header {
  padding: 12px 18px;
  background: #f8fafc;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.log-content {
  background: #ffffff;
  color: #334155;
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  font-size: 12.5px;
  padding: 16px;
  height: 360px;
  overflow-y: auto;
  line-height: 1.6;
}

.log-line {
  margin-bottom: 4px;
  word-break: break-all;
}

.log-time {
  color: #94a3b8;
  margin-right: 8px;
}

.log-source {
  color: #2563eb;
  margin-right: 8px;
  font-weight: 700;
}

.log-level-success {
  color: #15803d;
  font-weight: 500;
}

.log-level-error {
  color: #dc2626;
  font-weight: 500;
}

.log-level-warning {
  color: #d97706;
  font-weight: 500;
}

.log-level-info {
  color: #475569;
}

/* 模态框 Modal */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 90%;
  max-width: 580px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 40px -8px rgba(15, 23, 42, 0.15);
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #f8fafc;
}

.modal-header h3 {
  font-size: 17px;
  font-weight: 700;
  color: #0f172a;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 22px;
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: #0f172a;
}

.modal-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  background: #f8fafc;
}

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

.form-group label {
  font-size: 13px;
  color: #475569;
  font-weight: 600;
}

.form-control {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--text-main);
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-text {
  font-size: 11.5px;
  color: var(--text-muted);
}

.hidden {
  display: none !important;
}

/* Toast 浮层提示 */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 2000;
}

.toast {
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 10px 25px -4px rgba(0, 0, 0, 0.12);
  color: #ffffff;
  animation: slideIn 0.3s ease;
}

.toast-success { background: #16a34a; }
.toast-error { background: #dc2626; }
.toast-info { background: #2563eb; }

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

@media (max-width: 768px) {
  body { padding: 12px; }
  .accounts-grid { grid-template-columns: 1fr; }
  .header-actions { flex-direction: column; align-items: stretch; }
}