/* ===================== 后台管理样式 ===================== */

body.admin-body {
  background: #080b12;
  font-family: var(--font);
  color: var(--text-primary);
  min-height: 100vh;
}

/* ====== 登录页 ====== */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #080b12;
  position: relative;
  overflow: hidden;
}
.login-page::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,212,255,0.06) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.login-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 36px;
  width: 100%;
  max-width: 400px;
  position: relative;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5);
}
.login-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  border-radius: 16px 16px 0 0;
}
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo-text { font-size: 26px; font-weight: 800; color: #fff; }
.login-subtitle { font-size: 13px; color: var(--text-muted); margin-top: 6px; }
.login-title { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 24px; }

.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 6px; }
.form-input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}
.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-glow);
}
.form-input::placeholder { color: var(--text-muted); }

.login-btn {
  width: 100%;
  padding: 12px;
  background: var(--accent);
  color: #000;
  font-weight: 700;
  font-size: 14px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  margin-top: 8px;
}
.login-btn:hover {
  background: #fff;
  box-shadow: 0 0 20px var(--accent-glow);
}
.login-hint {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 14px;
}
.login-error {
  color: var(--red);
  font-size: 12px;
  text-align: center;
  margin-top: 8px;
  display: none;
}

/* ====== 后台布局 ====== */
.admin-layout { display: flex; min-height: 100vh; }

/* 侧边栏 */
.admin-sidebar {
  width: 220px;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: var(--transition);
}
.admin-sidebar-logo {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
}
.admin-sidebar-logo .logo-text { font-size: 18px; font-weight: 800; color: #fff; }
.admin-tag {
  font-size: 10px;
  background: var(--accent);
  color: #000;
  padding: 1px 6px;
  border-radius: 4px;
  font-weight: 700;
  margin-left: 6px;
}
.admin-nav { flex: 1; padding: 16px 12px; overflow-y: auto; }
.admin-nav-section { margin-bottom: 20px; }
.admin-nav-section-title {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 0 8px;
  margin-bottom: 6px;
}
.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 13px;
  transition: var(--transition);
  border: 1px solid transparent;
  margin-bottom: 2px;
  text-decoration: none;
}
.admin-nav-item:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}
.admin-nav-item.active {
  color: var(--accent);
  background: var(--accent-glow);
  border-color: rgba(0,212,255,0.2);
}
.admin-nav-icon { font-size: 15px; }
.admin-sidebar-foot {
  padding: 16px 12px;
  border-top: 1px solid var(--border);
}
.admin-logout {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 13px;
  transition: var(--transition);
  background: none;
  border: none;
  width: 100%;
}
.admin-logout:hover { color: var(--red); background: rgba(255,82,82,0.08); }

/* 主内容区 */
.admin-main {
  margin-left: 220px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.admin-topbar {
  height: 56px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 90;
}
.topbar-title { font-size: 16px; font-weight: 600; color: #fff; }
.topbar-user { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-secondary); }
.topbar-avatar {
  width: 30px; height: 30px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #000;
}

.admin-content { padding: 24px; flex: 1; }

/* 仪表盘卡片 */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.dash-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  overflow: hidden;
}
.dash-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
}
.dash-card.blue::before { background: linear-gradient(90deg, var(--accent), transparent); }
.dash-card.green::before { background: linear-gradient(90deg, var(--green), transparent); }
.dash-card.yellow::before { background: linear-gradient(90deg, var(--yellow), transparent); }
.dash-card.purple::before { background: linear-gradient(90deg, var(--purple), transparent); }
.dash-icon { font-size: 28px; margin-bottom: 10px; }
.dash-label { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.dash-value { font-size: 28px; font-weight: 800; color: #fff; }

/* 管理面板区块 */
.admin-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 20px;
  overflow: hidden;
}
.admin-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card2);
}
.admin-section-title { font-size: 14px; font-weight: 600; color: #fff; }
.admin-section-body { padding: 20px; }

/* 表格 */
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th {
  text-align: left;
  padding: 10px 12px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-dark);
}
.admin-table td {
  padding: 12px 12px;
  font-size: 13px;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(30,45,69,0.5);
  vertical-align: middle;
}
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--bg-hover); }

/* 按钮 */
.btn { padding: 7px 14px; border-radius: 6px; font-size: 12px; font-weight: 500; cursor: pointer; transition: var(--transition); border: 1px solid transparent; }
.btn-sm { padding: 4px 10px; font-size: 11px; }
.btn-primary-admin { background: var(--accent); color: #000; font-weight: 700; }
.btn-primary-admin:hover { background: #fff; }
.btn-outline { background: none; border-color: var(--border); color: var(--text-secondary); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger { background: rgba(255,82,82,0.1); border-color: rgba(255,82,82,0.3); color: var(--red); }
.btn-danger:hover { background: var(--red); color: #fff; }
.btn-success { background: rgba(0,230,118,0.1); border-color: rgba(0,230,118,0.3); color: var(--green); }

/* 表单 */
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-full { grid-column: 1 / -1; }
.form-group-admin { display: flex; flex-direction: column; gap: 6px; }
.form-label-admin { font-size: 12px; color: var(--text-secondary); font-weight: 500; }
.form-input-admin {
  padding: 9px 12px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
  transition: var(--transition);
}
.form-input-admin:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-glow); }
.form-input-admin::placeholder { color: var(--text-muted); }
.form-textarea { min-height: 90px; resize: vertical; }
.form-select {
  padding: 9px 12px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
  cursor: pointer;
  transition: var(--transition);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%238fa3c0' d='M0 0l5 6 5-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}
.form-select:focus { border-color: var(--accent); }

/* 标签/徽章 */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}
.status-active { background: rgba(0,230,118,0.1); color: var(--green); border: 1px solid rgba(0,230,118,0.25); }
.status-inactive { background: rgba(255,82,82,0.1); color: var(--red); border: 1px solid rgba(255,82,82,0.25); }
.status-pending { background: rgba(255,215,64,0.1); color: var(--yellow); border: 1px solid rgba(255,215,64,0.25); }

/* 模态框 */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  transform: scale(0.95);
  transition: var(--transition);
}
.modal-overlay.open .modal { transform: scale(1); }
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-title { font-size: 15px; font-weight: 600; color: #fff; }
.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  transition: var(--transition);
}
.modal-close:hover { color: var(--red); background: rgba(255,82,82,0.1); }
.modal-body { padding: 20px; }
.modal-footer { padding: 16px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

/* Toast 提示 */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--shadow);
  animation: slideIn 0.3s ease;
  min-width: 200px;
}
.toast-success { background: rgba(0,230,118,0.15); border: 1px solid rgba(0,230,118,0.3); color: var(--green); }
.toast-error { background: rgba(255,82,82,0.15); border: 1px solid rgba(255,82,82,0.3); color: var(--red); }
.toast-info { background: rgba(0,212,255,0.12); border: 1px solid rgba(0,212,255,0.3); color: var(--accent); }
@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* 页面内容切换 */
.admin-page { display: none; }
.admin-page.active { display: block; }

/* 响应式 */
@media (max-width: 900px) {
  .admin-sidebar { width: 60px; }
  .admin-nav-item span, .admin-nav-section-title,
  .admin-sidebar-logo .logo-text + *, .admin-tag,
  .admin-logout span { display: none; }
  .admin-main { margin-left: 60px; }
  .dashboard-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .dashboard-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .admin-content { padding: 16px; }
}