:root {
  --primary: #0e7490;
  --primary-dark: #0f5f78;
  --danger: #dc2626;
  --danger-dark: #b91c1c;
  --success: #16a34a;
  --success-dark: #15803d;
  --bg: #f3f4f6;
  --card: #ffffff;
  --text: #111827;
  --text-secondary: #6b7280;
  --border: #e5e7eb;
}

* { box-sizing: border-box; }

html { font-size: 16px; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* ---------- 登录页 ---------- */
body.login-page {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
}

.login-bg {
  position: fixed;
  inset: 0;
  background: url('/images/bg.jpg') center center / cover no-repeat;
  z-index: -2;
}

.login-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  z-index: -1;
}

.login-wrapper {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.login-card {
  background: rgba(255, 255, 255, 0.96);
  border-radius: 20px;
  padding: 36px 24px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.12);
  text-align: center;
}

.login-logo {
  display: block;
  max-width: 160px;
  height: auto;
  margin: 0 auto 20px;
}

.login-card h1 {
  margin: 0 0 8px;
  font-size: 22px;
  font-weight: 700;
  text-align: center;
  letter-spacing: 0.5px;
}

.subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin: 0 0 28px;
  font-size: 14px;
}

.login-card form { text-align: left; }

.field { margin-bottom: 18px; }

.field label {
  display: block;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}

.field input,
.field select {
  width: 100%;
  padding: 14px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 16px;
  background: #fff;
  color: var(--text);
  min-height: 48px;
}

.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(14,116,144,0.15);
}

.field select:disabled {
  background: #f9fafb;
  color: var(--text-secondary);
}

.btn-primary,
.btn-secondary,
.btn-danger,
.btn-success {
  border: none;
  border-radius: 10px;
  padding: 14px 20px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  min-height: 48px;
  touch-action: manipulation;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  width: 100%;
}

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

.btn-secondary {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover { background: #f9fafb; }

.btn-danger {
  background: var(--danger);
  color: #fff;
  padding: 10px 16px;
  font-size: 14px;
}

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

.btn-success {
  background: var(--success);
  color: #fff;
  padding: 10px 16px;
  font-size: 14px;
}

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

.btn-sm { padding: 8px 12px; font-size: 13px; min-height: 36px; }

.error { color: var(--danger); font-size: 14px; margin: 10px 0 0; }
.message { font-size: 15px; margin: 12px 0 0; }
.message.success { color: var(--success); }
.message.error { color: var(--danger); }

.admin-link {
  display: block;
  text-align: center;
  margin-top: 18px;
  color: var(--text-secondary);
  font-size: 14px;
  text-decoration: none;
}

.admin-link:hover { color: var(--primary); }

/* ---------- 业务页面 ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 18px;
}

.page-header h1 { margin: 0; font-size: 20px; }

.welcome {
  margin: 4px 0 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.header-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.header-actions .btn-primary,
.header-actions .btn-secondary { width: auto; }

/* 客户下单页右上角 logo + 退出 */
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo {
  height: 38px;
  width: auto;
  object-fit: contain;
}

/* 后台：全白背景 */
body.admin-white { background: #ffffff; }

.admin-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.admin-title .header-logo { height: 42px; }

.admin-header { align-items: flex-start; }

/* 筛选栏 */
.filter-bar {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 14px;
}

.filter-bar .field {
  margin-bottom: 0;
  min-width: 160px;
  flex: 1 1 160px;
}

.filter-tip {
  margin-left: auto;
  align-self: center;
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
}

.col-check {
  width: 42px;
  text-align: center;
}

.col-check input {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

td.col-check { text-align: center; }

.card {
  background: var(--card);
  border-radius: 14px;
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.card h2 {
  margin: 0 0 16px;
  font-size: 17px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  padding: 12px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

th {
  background: #f9fafb;
  font-weight: 600;
  color: var(--text-secondary);
}

tbody tr:hover { background: #f9fafb; }

.status {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.status.placed { background: #dbeafe; color: #1e40af; }
.status.pending { background: #fef3c7; color: #92400e; }
.status.cancelled { background: #fee2e2; color: #991b1b; }

tr.pending td { background: #fffbeb; }
td.cancelled, tr.cancelled td {
  text-decoration: line-through;
  color: var(--text-secondary);
}

.empty {
  text-align: center;
  color: var(--text-secondary);
  padding: 28px;
  font-size: 15px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.stat {
  background: #f9fafb;
  border-radius: 10px;
  padding: 16px 10px;
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
}

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

/* ---------- 小平板 / 桌面端 ---------- */
@media (min-width: 640px) {
  .container { padding: 24px; }
  .page-header { margin-bottom: 24px; }
  .page-header h1 { font-size: 24px; }
  .header-logo { height: 44px; }
  .admin-title .header-logo { height: 48px; }
  .card { padding: 24px; margin-bottom: 24px; }
  .card h2 { font-size: 18px; }
  .stats { grid-template-columns: repeat(4, 1fr); }
  .stat-value { font-size: 28px; }
}

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: 1fr 1fr; gap: 16px; }
  .login-card { padding: 44px 40px; }
  .login-logo { max-width: 180px; }
  .login-card h1 { font-size: 24px; }
}

@media (max-width: 639px) {
  .page-header { flex-direction: column; align-items: flex-start; }
  .header-right { width: 100%; justify-content: space-between; }
  .header-actions { width: 100%; }
  .header-actions button { flex: 1; }
  .admin-title { width: 100%; }
  .filter-bar .field { flex: 1 1 100%; min-width: 100%; }
  .filter-tip { margin-left: 0; width: 100%; }
}