/* ========== Kuka APK Builder - 蓝白主题 ========== */
:root {
  --primary: #1e6fff;
  --primary-dark: #0d5ce6;
  --primary-light: #e8f1ff;
  --primary-bg: #f5f8ff;
  --text: #1a2332;
  --text-light: #6b7a90;
  --border: #e2e8f0;
  --white: #ffffff;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --shadow: 0 2px 12px rgba(30,111,255,.08);
  --shadow-lg: 0 8px 30px rgba(30,111,255,.12);
  --radius: 10px;
  --sidebar-w: 240px;
}
* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--primary-bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

/* ========== 登录页 ========== */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e6fff 0%, #4f9bff 50%, #87c0ff 100%);
  padding: 20px;
}
.auth-card {
  background: var(--white);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  padding: 40px 36px;
  width: 100%;
  max-width: 400px;
}
.auth-logo {
  text-align: center;
  margin-bottom: 28px;
}
.auth-logo .logo-icon {
  width: 64px; height: 64px;
  background: linear-gradient(135deg, var(--primary), #4f9bff);
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}
.auth-logo h1 { font-size: 22px; color: var(--text); }
.auth-logo p { color: var(--text-light); font-size: 13px; margin-top: 4px; }
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  color: var(--text);
  font-size: 13px;
}
.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  transition: border-color .2s, box-shadow .2s;
  background: var(--white);
  color: var(--text);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30,111,255,.12);
}
textarea.form-control { resize: vertical; min-height: 80px; }
select.form-control { cursor: pointer; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all .2s;
  text-decoration: none;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-success { background: var(--success); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .6; cursor: not-allowed; }

.auth-footer {
  text-align: center;
  margin-top: 20px;
  color: var(--text-light);
  font-size: 13px;
}

/* ========== 管理后台布局 ========== */
.admin-layout { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar-w);
  background: linear-gradient(180deg, #0f3a8c 0%, #1e6fff 100%);
  color: #fff;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: transform .3s;
}
.sidebar-logo {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.sidebar-logo .logo-icon {
  width: 36px; height: 36px;
  background: rgba(255,255,255,.2);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
}
.sidebar-logo span { font-size: 16px; font-weight: 600; }
.sidebar-nav { flex: 1; padding: 12px 0; overflow-y: auto; }
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 24px;
  color: rgba(255,255,255,.75);
  font-size: 14px;
  transition: all .2s;
  border-left: 3px solid transparent;
}
.sidebar-nav a:hover {
  background: rgba(255,255,255,.08);
  color: #fff;
}
.sidebar-nav a.active {
  background: rgba(255,255,255,.12);
  color: #fff;
  border-left-color: #fff;
}
.sidebar-nav .nav-icon { width: 18px; text-align: center; }
.sidebar-user {
  padding: 16px 24px;
  border-top: 1px solid rgba(255,255,255,.1);
  font-size: 13px;
}
.sidebar-user .username { font-weight: 600; }
.sidebar-user .role { opacity: .7; font-size: 12px; }

.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
}
.topbar {
  background: var(--white);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar h2 { font-size: 18px; font-weight: 600; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--text);
}
.page-content { padding: 24px 28px; }

/* ========== 卡片/统计 ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 14px;
}
.stat-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
}
.stat-icon.blue { background: linear-gradient(135deg, #1e6fff, #4f9bff); }
.stat-icon.green { background: linear-gradient(135deg, #10b981, #34d399); }
.stat-icon.orange { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.stat-icon.purple { background: linear-gradient(135deg, #8b5cf6, #a78bfa); }
.stat-info .num { font-size: 24px; font-weight: 700; }
.stat-info .label { color: var(--text-light); font-size: 13px; }

.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.card-header h3 { font-size: 16px; font-weight: 600; }

/* ========== 表格 ========== */
.table-wrap { overflow-x: auto; }
table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
table.data-table th {
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}
table.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
table.data-table tr:hover td { background: #f8faff; }
table.data-table .actions { display: flex; gap: 6px; flex-wrap: wrap; }

.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}
.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-info { background: var(--primary-light); color: var(--primary-dark); }
.badge-gray { background: #f3f4f6; color: #4b5563; }

/* ========== 表单行 ========== */
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.form-check-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.form-check {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  padding: 6px 12px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  transition: all .2s;
}
.form-check:hover { border-color: var(--primary); }
.form-check input { cursor: pointer; }
.form-check.checked { border-color: var(--primary); background: var(--primary-light); }

/* ========== 上传预览 ========== */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s;
  position: relative;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.upload-area:hover { border-color: var(--primary); }
.upload-area input[type=file] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}
.upload-preview {
  max-width: 100%;
  max-height: 140px;
  border-radius: 8px;
  object-fit: contain;
}
.upload-placeholder { color: var(--text-light); font-size: 13px; }

/* ========== 模态框 ========== */
.modal-mask {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-mask.show { display: flex; }
.modal {
  background: var(--white);
  border-radius: 14px;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}
.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-header h3 { font-size: 17px; }
.modal-close {
  background: none; border: none;
  font-size: 22px; cursor: pointer;
  color: var(--text-light);
}
.modal-body { padding: 24px; }
.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* ========== Toast ========== */
.toast-container {
  position: fixed;
  top: 20px; right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.toast {
  padding: 12px 20px;
  border-radius: 8px;
  color: #fff;
  font-size: 14px;
  box-shadow: var(--shadow-lg);
  animation: slideIn .3s ease;
  max-width: 360px;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--primary); }
@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ========== 分页 ========== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 16px;
}
.pagination button, .pagination span {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--white);
  cursor: pointer;
  font-size: 13px;
}
.pagination button:hover { border-color: var(--primary); color: var(--primary); }
.pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .disabled { opacity: .5; cursor: not-allowed; }

/* ========== 详情页 ========== */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.detail-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.detail-item .label { color: var(--text-light); font-size: 12px; margin-bottom: 4px; }
.detail-item .value { font-size: 14px; font-weight: 500; word-break: break-all; }
.detail-img {
  width: 80px; height: 80px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
}

/* ========== 空状态 ========== */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-light);
}
.empty-state .icon { font-size: 48px; margin-bottom: 12px; opacity: .4; }

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .mobile-menu-btn { display: block; }
  .topbar { padding: 12px 16px; }
  .page-content { padding: 16px; }
  .auth-card { padding: 28px 20px; }
  .form-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .card { padding: 16px; }
  .modal { max-width: 100%; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
}

/* 侧边栏遮罩（移动端） */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 99;
}
.sidebar-overlay.show { display: block; }