:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-bg: #f4f6fb;
  --color-card: #ffffff;
  --color-border: #e3e7ef;
  --color-text: #1f2430;
  --color-text-muted: #6b7280;
  --color-success: #16a34a;
  --color-danger: #dc2626;
  --color-warning: #d97706;
  --sidebar-width: 220px;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  font-size: 15px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- 登录页 ---------- */
.content-plain {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  background: var(--color-card);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 40px 36px;
  width: 360px;
}
.login-card h1 { font-size: 20px; margin: 0 0 4px; }
.login-card p.sub { color: var(--color-text-muted); margin: 0 0 24px; font-size: 13px; }

/* ---------- 整体布局 ---------- */
.app-shell { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-width);
  background: #151b2b;
  color: #cbd3e6;
  flex-shrink: 0;
  padding: 20px 0;
  overflow-y: auto;
}
.sidebar-brand {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  padding: 0 20px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 10px;
}
.sidebar-nav { display: flex; flex-direction: column; }
.sidebar-nav a {
  color: #cbd3e6;
  padding: 9px 20px;
  font-size: 14px;
}
.sidebar-nav a:hover { background: rgba(255,255,255,0.06); text-decoration: none; }
.nav-group {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #6b7692;
  padding: 14px 20px 4px;
}

.main-area { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.topbar {
  height: 56px;
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}
.topbar-title { font-size: 16px; font-weight: 600; }
.topbar-user { font-size: 13px; color: var(--color-text-muted); display: flex; align-items: center; gap: 14px; }

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

/* ---------- 通用组件 ---------- */
.card {
  background: var(--color-card);
  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 h2 { font-size: 15px; margin: 0; }

.alert {
  padding: 10px 16px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 13px;
}
.alert-success { background: #ecfdf3; color: var(--color-success); border: 1px solid #bbf7d0; }
.alert-error { background: #fef2f2; color: var(--color-danger); border: 1px solid #fecaca; }

/* ---------- Toast 弹窗提示 ---------- */
#toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 360px;
}
.toast {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12), 0 1px 3px rgba(0,0,0,0.08);
  border-left: 4px solid var(--color-primary);
  font-size: 13px;
  line-height: 1.5;
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.toast.toast-show { opacity: 1; transform: translateX(0); }
.toast.toast-hide { opacity: 0; transform: translateX(20px); }
.toast-icon { flex-shrink: 0; width: 18px; height: 18px; margin-top: 1px; }
.toast-message { flex: 1; color: var(--color-text); word-break: break-word; }
.toast-close { flex-shrink: 0; cursor: pointer; color: var(--color-text-muted); background: none; border: none; font-size: 15px; line-height: 1; padding: 0; }
.toast-success { border-left-color: var(--color-success); }
.toast-success .toast-icon { color: var(--color-success); }
.toast-error { border-left-color: var(--color-danger); }
.toast-error .toast-icon { color: var(--color-danger); }
.toast-warning { border-left-color: var(--color-warning); }
.toast-warning .toast-icon { color: var(--color-warning); }
.toast-info { border-left-color: var(--color-primary); }
.toast-info .toast-icon { color: var(--color-primary); }

/* ---------- 确认弹窗(替代原生 confirm()) ---------- */
.confirm-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 20, 30, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.confirm-overlay.confirm-show { opacity: 1; }
.confirm-modal {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.25);
  padding: 24px;
  width: 360px;
  max-width: calc(100vw - 40px);
  transform: translateY(8px) scale(0.98);
  transition: transform 0.15s ease;
}
.confirm-overlay.confirm-show .confirm-modal { transform: translateY(0) scale(1); }
.confirm-message {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 20px;
  white-space: pre-line;
}
.confirm-actions { display: flex; justify-content: flex-end; gap: 10px; }

/* ---------- 扫码组件 ---------- */
#scan-reader video {
  width: 100% !important;
  border-radius: 8px;
}
#scan-reader video::-webkit-media-controls { display: none !important; }

.btn {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 6px;
  border: none;
  background: var(--color-primary);
  color: #fff;
  font-size: 13px;
  cursor: pointer;
}
.btn:hover { background: var(--color-primary-dark); text-decoration: none; color: #fff; }
.btn-secondary { background: #eef1f6; color: var(--color-text); }
.btn-secondary:hover { background: #e2e6ee; color: var(--color-text); }
.btn-danger { background: var(--color-danger); }
.btn-danger:hover { background: #b91c1c; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-link { color: var(--color-primary); background: none; border: none; cursor: pointer; font-size: 13px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; margin-bottom: 6px; color: var(--color-text-muted); }
.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 14px;
  background: #fff;
}
.form-control:focus { outline: none; border-color: var(--color-primary); }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table-scroll { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-scroll table { width: auto; min-width: 100%; }
thead th {
  text-align: left;
  padding: 10px 12px;
  background: #f8f9fc;
  color: var(--color-text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}
tbody td { padding: 10px 12px; border-bottom: 1px solid var(--color-border); white-space: nowrap; }
tbody tr:hover { background: #fafbfd; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; }
.badge-success { background: #ecfdf3; color: var(--color-success); }
.badge-danger { background: #fef2f2; color: var(--color-danger); }
.badge-warning { background: #fffbeb; color: var(--color-warning); }
.badge-muted { background: #f1f2f6; color: var(--color-text-muted); }

.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.toolbar .form-control { width: auto; }

.empty-state { text-align: center; padding: 40px 0; color: var(--color-text-muted); font-size: 13px; }

.table-actions a, .table-actions button { margin-right: 8px; }

.sidebar-toggle-btn {
  display: none;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--color-text);
  padding: 4px 6px;
}

@media (max-width: 860px) {
  .sidebar {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    z-index: 200;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    box-shadow: 4px 0 16px rgba(0,0,0,0.15);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  .sidebar.sidebar-open { transform: translateX(0); }
  .sidebar-backdrop {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 199;
  }
  .sidebar-backdrop.sidebar-backdrop-show { display: block; }
  .sidebar-toggle-btn { display: inline-flex; }
  .content { padding: 14px; }
  .form-row { flex-direction: column; }
}