/* ========================================
   优惠寄快递 - 管理后台样式
======================================== */

:root {
  --primary: #FF6B00;
  --primary-light: #FFF5EC;
  --primary-dark: #E06000;
  --danger: #FF4D4F;
  --success: #52C41A;
  --warning: #FAAD14;
  --info: #1677FF;
  --text: #1a1a1a;
  --text-secondary: #666;
  --text-light: #999;
  --bg: #F5F7FA;
  --bg-card: #fff;
  --border: #E8E8E8;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --sidebar-width: 240px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

/* ---- Layout ---- */
.layout {
  display: flex;
  min-height: 100vh;
}

/* ---- Sidebar ---- */
.sidebar {
  width: var(--sidebar-width);
  background: linear-gradient(180deg, #1a1a2e 0%, #16213e 100%);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
}

.sidebar-header {
  padding: 28px 24px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
}

.logo-icon {
  font-size: 28px;
}

.logo-sub {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  margin-top: 4px;
  padding-left: 38px;
}

.nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius);
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
  cursor: pointer;
  position: relative;
}

.nav-item:hover {
  color: #fff;
  background: rgba(255,255,255,0.08);
}

.nav-item.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 4px 12px rgba(255,107,0,0.3);
}

.nav-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
}

.nav-badge {
  margin-left: auto;
  background: var(--danger);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
  min-width: 20px;
  text-align: center;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

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

.admin-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}

.admin-name {
  font-size: 13px;
  font-weight: 600;
}

.admin-role {
  font-size: 11px;
  color: rgba(255,255,255,0.5);
}

/* ---- Main Content ---- */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 0;
}

/* ---- Topbar ---- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 32px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.page-title {
  font-size: 22px;
  font-weight: 700;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

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

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}

.btn:active {
  transform: scale(0.97);
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(255,107,0,0.3);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

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

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-success {
  background: var(--success);
  color: #fff;
}

/* ---- Page Container ---- */
.page-container {
  padding: 24px 32px;
}

/* ---- Cards ---- */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: 16px;
  font-weight: 600;
}

.card-body {
  padding: 24px;
}

/* ---- Stat Cards ---- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.stat-card:nth-child(1)::before { background: linear-gradient(90deg, #FF6B00, #FF9F43); }
.stat-card:nth-child(2)::before { background: linear-gradient(90deg, #1677FF, #69B1FF); }
.stat-card:nth-child(3)::before { background: linear-gradient(90deg, #52C41A, #95DE64); }
.stat-card:nth-child(4)::before { background: linear-gradient(90deg, #722ED1, #B37FEB); }

.stat-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.stat-icon {
  font-size: 32px;
  opacity: 0.9;
}

.stat-change {
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 12px;
  font-weight: 600;
}

.stat-change.up { background: #F6FFED; color: #52C41A; }
.stat-change.down { background: #FFF2F0; color: #FF4D4F; }

.stat-number {
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 4px;
}

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

/* ---- Grid Layout ---- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ---- Table ---- */
.table-wrapper {
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th {
  padding: 12px 16px;
  text-align: left;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg);
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}

.table td {
  padding: 14px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.table tr:hover {
  background: #FAFAFA;
}

.table .status-tag {
  display: inline-flex;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

/* ---- Status Tags ---- */
.status-tag.pending { background: #FFF5EC; color: #FF6B00; }
.status-tag.paid { background: #E6F7FF; color: #1677FF; }
.status-tag.cancelled { background: #F5F5F5; color: #999; }
.status-tag.picked { background: #F9F0FF; color: #722ED1; }
.status-tag.transit { background: #E6F7FF; color: #1677FF; }
.status-tag.done { background: #F6FFED; color: #52C41A; }
.status-tag.error { background: #FFF2F0; color: #FF4D4F; }

/* ---- Form ---- */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  transition: border-color 0.2s;
  outline: none;
  font-family: inherit;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255,107,0,0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ---- Modal ---- */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.4);
  z-index: 200;
  align-items: center;
  justify-content: center;
}

.modal-overlay.show {
  display: flex;
}

.modal {
  background: #fff;
  border-radius: 16px;
  width: 90%;
  max-width: 520px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--bg);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.modal-body {
  padding: 24px;
}

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

/* ---- Order Detail ---- */
.order-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.order-detail-section {
  margin-bottom: 24px;
}

.order-detail-section h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary);
  color: var(--primary);
}

.detail-row {
  display: flex;
  margin-bottom: 10px;
}

.detail-label {
  width: 100px;
  font-size: 13px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.detail-value {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}

/* ---- Loading ---- */
.loading {
  text-align: center;
  padding: 60px;
  color: var(--text-secondary);
}

.loading-spinner {
  display: inline-block;
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 12px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---- Toast ---- */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 300;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  animation: slideIn 0.3s ease;
  display: none;
}

.toast.success { background: #F6FFED; color: #52C41A; border: 1px solid #B7EB8F; }
.toast.error { background: #FFF2F0; color: #FF4D4F; border: 1px solid #FFCCC7; }

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

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .sidebar {
    display: none;
  }
  .main-content {
    margin-left: 0;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
  .page-container {
    padding: 16px;
  }
  .topbar {
    padding: 16px;
  }
}