:root {
  --primary: #4f7cff;
  --primary-dark: #3a63d8;
  --danger: #e15555;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --card: rgba(255, 255, 255, 0.5);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

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

html, body { height: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  min-height: 100vh;
  background-color: #ffffff;
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
}

/* 顶部两个跳转按钮 */
.top-buttons {
  position: fixed;
  top: 16px;
  left: 16px;
  display: flex;
  gap: 10px;
  z-index: 50;
}
.top-buttons a {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  overflow: hidden;
  display: block;
  background: #111;
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}
.top-buttons a img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
/* 上传了图标后：按钮背景透明，PNG 透明部分透出页面背景图（无背景图时为白色） */
.top-buttons a.has-icon,
.top-buttons a:has(img) {
  background: transparent;
  box-shadow: none;
}

/* 右上角退出登录按钮（圆形，箭头居中，比左上角按钮更小） */
.logout-btn {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 50;
  width: 36px;
  height: 36px;
  padding: 0;
  font-size: 20px;
  line-height: 36px;
  text-align: center;
  color: #fff;
  background: rgba(0,0,0,.5);
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 50%;
  cursor: pointer;
  backdrop-filter: blur(4px);
  transition: background .2s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logout-btn:hover {
  background: rgba(220,53,69,.85);
  border-color: rgba(255,255,255,.5);
}

/* 通用卡片容器 */
.card-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.card {
  background: var(--card);
  backdrop-filter: blur(8px);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 32px;
  width: 100%;
  max-width: 440px;
}
.card.wide { max-width: 640px; }

h1, h2, h3 { line-height: 1.3; }
.label { font-size: 15px; font-weight: 600; margin-bottom: 12px; display: block; }
.muted { color: var(--muted); font-size: 13px; }
.center { text-align: center; }

input[type="text"], input[type="password"], input[type="tel"],
input[type="email"], input[type="number"], input[type="search"],
input[type="url"], input[type="date"], select, textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  background: #fff;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 124, 255, .15);
}
textarea { resize: vertical; min-height: 70px; }

.field { margin-bottom: 16px; }
.field-row { display: flex; gap: 10px; }
.field-row > * { flex: 1; }

.btn {
  display: inline-block;
  border: none;
  border-radius: 10px;
  padding: 13px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, transform .05s;
  text-align: center;
  font-family: inherit;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-block { display: block; width: 100%; }
.btn-sm { padding: 8px 14px; font-size: 13px; border-radius: 8px; }
.btn-ghost { background: #f0f2f7; color: var(--text); }
.btn-ghost:hover { background: #e2e6ef; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #c94444; }
.btn-success { background: #2bb673; color: #fff; }
.btn-warn { background: #f0a020; color: #fff; }
.btn-warn:hover { background: #d88e16; }
.btn-warning { background: #ff8c00; color: #fff; }
.btn-warning:hover { background: #e07a00; }

.actions-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
}
.actions-row .btn-primary { flex: 1; }

/* 二维码页 */
.qr-box { text-align: center; }
.qr-box img {
  width: 260px;
  height: 260px;
  border-radius: 12px;
  background: #fff;
  padding: 10px;
  box-shadow: 0 6px 20px rgba(0,0,0,.12);
}
.status-text { margin-top: 16px; font-size: 15px; min-height: 22px; }

/* 提交成功 */
.success-icon {
  width: 72px; height: 72px; border-radius: 50%;
  background: #2bb673; color: #fff; font-size: 40px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
}
.result-list { margin: 18px 0; }
.result-list .row {
  display: flex; padding: 9px 0; border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.result-list .row .k { width: 110px; color: var(--muted); flex-shrink: 0; }
.result-list .row .v { flex: 1; word-break: break-all; }

/* 后台 */
.admin-bar {
  background: #1f2937; color: #fff; padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 40;
}
.admin-bar .brand { font-weight: 700; font-size: 16px; }
.admin-bar .right { display: flex; gap: 10px; align-items: center; }

.tabs { display: flex; gap: 4px; padding: 12px 24px; background: #f3f4f6; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.tab {
  padding: 8px 16px; border-radius: 8px; cursor: pointer; font-size: 14px;
  color: var(--muted); font-weight: 600;
}
.tab.active { background: #fff; color: var(--primary); box-shadow: 0 1px 3px rgba(0,0,0,.08); }

.admin-main { padding: 24px; max-width: 1180px; margin: 0 auto; }
.panel { display: none; }
.panel.active { display: block; }

table.data { width: 100%; border-collapse: collapse; background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 1px 4px rgba(0,0,0,.06); }
table.data th, table.data td { padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 13px; text-align: left; }
table.data th { background: #f9fafb; font-weight: 600; color: var(--muted); }
table.data tr:hover td { background: #fafbff; }
.table-scroll { overflow-x: auto; }

.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
.toolbar select, .toolbar input { width: auto; min-width: 140px; }
.toolbar .spacer { flex: 1; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 600px) { .form-grid { grid-template-columns: 1fr; } }

.note { background: #fff7ed; border: 1px solid #fed7aa; color: #9a3412; padding: 10px 14px; border-radius: 10px; font-size: 13px; margin-bottom: 16px; }

.toast {
  position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%);
  background: #1f2937; color: #fff; padding: 12px 22px; border-radius: 10px;
  font-size: 14px; z-index: 999; box-shadow: 0 6px 20px rgba(0,0,0,.3);
  opacity: 0; transition: opacity .25s, bottom .25s; pointer-events: none;
}
.toast.show { opacity: 1; bottom: 44px; }

.modal-mask {
  position: fixed; inset: 0; background: rgba(0,0,0,.45);
  display: none; align-items: center; justify-content: center; z-index: 100; padding: 20px;
}
.modal-mask.show { display: flex; }
.modal {
  background: #fff; border-radius: 14px; padding: 24px; width: 100%; max-width: 520px;
  max-height: 90vh; overflow-y: auto;
}
.modal h3 { margin-bottom: 16px; }
.modal .actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 18px; }

.upload-row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.upload-row label { font-size: 14px; min-width: 130px; color: var(--muted); }
.upload-row .cur { font-size: 12px; color: var(--muted); }
.thumb { width: 56px; height: 56px; border-radius: 8px; object-fit: cover; border: 1px solid var(--border); background: #f3f4f6; }
.thumb.thumb-clickable { cursor: zoom-in; transition: transform .12s ease-out, box-shadow .12s ease-out; }
.thumb.thumb-clickable:hover { transform: scale(1.08); box-shadow: 0 4px 14px rgba(0,0,0,.18); }

.uid-locked {
  background: #f3f4f6; color: var(--muted); font-weight: 600;
}

@media (max-width: 640px) {
  .card { padding: 22px; }
  .qr-box img { width: 220px; height: 220px; }
  .admin-main { padding: 14px; }
}

/* 图片尺寸要求标注 */
.spec-hint { font-size: 12px; color: var(--primary); font-weight: 600; margin-left: 6px; }
.upload-row .spec-hint { margin-left: 0; display: block; margin-top: 2px; }

/* 裁剪模态框 */
.modal.modal-wide { max-width: 760px; }
.crop-container {
  position: relative;
  margin: 12px 0 16px;
  background: #1f2937;
  border-radius: 10px;
  overflow: hidden;
  user-select: none;
  touch-action: none;
}
.crop-container canvas { display: block; max-width: 100%; height: auto; }
.crop-box {
  position: absolute;
  border: 2px solid #fff;
  box-shadow: 0 0 0 9999px rgba(0,0,0,.55);
  cursor: move;
  box-sizing: border-box;
  background-image:
    linear-gradient(rgba(255,255,255,.2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.2) 1px, transparent 1px);
  background-size: 33.34% 33.34%;
}
.crop-handles { position: absolute; inset: -5px; pointer-events: none; }
.crop-handles span {
  position: absolute; width: 12px; height: 12px; background: #fff;
  border-radius: 50%; border: 2px solid var(--primary); pointer-events: auto;
}
.crop-handles .ne { top: 0; right: 0; cursor: nesw-resize; }
.crop-handles .nw { top: 0; left: 0; cursor: nwse-resize; }
.crop-handles .se { bottom: 0; right: 0; cursor: nwse-resize; }
.crop-handles .sw { bottom: 0; left: 0; cursor: nesw-resize; }
.crop-info { font-size: 13px; color: var(--muted); margin-bottom: 10px; }
.crop-info b { color: var(--text); }
.size-tag {
  display: inline-block; font-size: 11px; color: var(--primary);
  background: rgba(79,124,255,.1); padding: 2px 8px; border-radius: 6px; margin-left: 8px;
  font-weight: 600; vertical-align: middle;
}

/* 首页主播选择列表 */
.match-list { margin-top: 4px; }
.match-list .match-item {
  margin-bottom: 8px; text-align: left; font-size: 15px;
  border: 1px solid var(--border); background: #fff;
}
.match-list .match-item:hover {
  border-color: var(--primary); background: #f5f8ff; color: var(--primary);
}

/* 数据管理搜索栏 */
.search-bar {
  display: flex; align-items: center; gap: 10px;
  margin: 10px 0;
}
.search-bar input {
  flex: 1; max-width: 400px;
  padding: 7px 12px; font-size: 14px;
  border: 1px solid var(--border); border-radius: 6px;
}
.search-bar input:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(79,124,255,.15);
}
.search-bar #searchCount { font-size: 13px; }

/* ============ 快递查询页 ============ */
.query-card {
  max-width: 560px;
  padding: 36px 32px;
}
.query-title {
  text-align: center;
  margin-bottom: 22px;
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
}
.query-form {
  display: flex;
  gap: 10px;
  align-items: stretch;
}
.query-input {
  flex: 1;
  min-width: 0;
  padding: 13px 14px;
  font-size: 15px;
}
.query-search-btn {
  flex-shrink: 0;
  padding: 13px 24px;
  white-space: nowrap;
}
.query-msg {
  margin-top: 10px;
  min-height: 18px;
  font-size: 13px;
}
.query-results {
  margin-top: 18px;
}
.query-loading,
.query-empty {
  text-align: center;
  color: var(--muted);
  padding: 24px 0;
  font-size: 14px;
}

/* 主播分组 */
.gift-group {
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px dashed rgba(0, 0, 0, .12);
}
.gift-group:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
.gift-group-header {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
  padding-left: 8px;
  border-left: 3px solid var(--primary);
}

/* 礼物信息卡 */
.gift-info {
  background: rgba(255, 255, 255, .65);
  border: 1px solid rgba(0, 0, 0, .08);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 10px;
}
.gift-info-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(0, 0, 0, .06);
}
.gift-info-row {
  display: flex;
  align-items: center;
  font-size: 14px;
  padding: 3px 0;
  line-height: 1.6;
}
.gift-icon {
  margin-right: 6px;
  flex-shrink: 0;
}
.gift-k {
  color: var(--muted);
  flex-shrink: 0;
  margin-right: 4px;
}
.gift-v {
  color: var(--text);
  word-break: break-all;
}

/* 快递单号按钮 */
.track-btn {
  display: flex;
  align-items: center;
  width: 100%;
  gap: 10px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 14px;
  cursor: pointer;
  transition: background .15s;
  font-family: inherit;
  text-align: left;
}
.track-btn:hover { background: var(--primary-dark); }
.track-btn:active { transform: translateY(1px); }
.track-btn.active { background: var(--primary-dark); }
.track-btn-name {
  font-weight: 600;
  flex-shrink: 0;
  max-width: 40%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.track-btn-num {
  flex: 1;
  font-family: "SF Mono", Consolas, Monaco, monospace;
  font-size: 13px;
  word-break: break-all;
}
.track-btn-arrow {
  flex-shrink: 0;
  font-size: 12px;
  transition: transform .2s;
}
.track-btn-arrow.open {
  transform: rotate(180deg);
}

/* 物流轨迹面板 */
.track-detail {
  margin-top: 8px;
  margin-bottom: 14px;
  padding: 14px;
  background: rgba(255, 255, 255, .75);
  border: 1px solid rgba(0, 0, 0, .08);
  border-radius: 10px;
  animation: trackFade .2s ease;
}
@keyframes trackFade {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}
.track-loading,
.track-empty,
.track-error {
  text-align: center;
  font-size: 13px;
  padding: 8px 0;
}
.track-loading { color: var(--muted); }
.track-empty { color: var(--muted); }
.track-error { color: var(--danger); }

.track-summary {
  padding-bottom: 10px;
  margin-bottom: 10px;
  border-bottom: 1px solid rgba(0, 0, 0, .08);
}
.track-summary-row {
  font-size: 13px;
  padding: 2px 0;
  display: flex;
  flex-wrap: wrap;
}
.track-k { color: var(--muted); margin-right: 4px; }
.track-v { color: var(--text); word-break: break-all; }
.track-status {
  font-weight: 600;
  color: var(--primary);
}
.track-last-msg {
  font-size: 13px;
  color: var(--text);
  padding: 6px 0;
  line-height: 1.6;
}

/* 物流时间轴 */
.track-timeline {
  position: relative;
  padding-left: 18px;
}
.track-timeline::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: rgba(0, 0, 0, .12);
}
.track-item {
  position: relative;
  padding: 0 0 14px 8px;
}
.track-item:last-child { padding-bottom: 0; }
.track-item-dot {
  position: absolute;
  left: -16px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid rgba(0, 0, 0, .25);
}
.track-item-dot.latest {
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(79, 124, 255, .2);
}
.track-item-content { font-size: 13px; line-height: 1.55; }
.track-item-time {
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}
.track-item-status {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(79, 124, 255, .1);
  padding: 1px 6px;
  border-radius: 4px;
  margin-bottom: 4px;
}
.track-item-area {
  font-size: 12px;
  margin-bottom: 2px;
}
.track-item-desc {
  color: var(--text);
  word-break: break-all;
}

/* 手机端响应式 */
@media (max-width: 600px) {
  .query-card { padding: 24px 18px; }
  .query-title { font-size: 20px; margin-bottom: 16px; }
  .query-form { flex-direction: column; gap: 8px; }
  .query-search-btn { width: 100%; }
  .track-btn-name { max-width: 45%; }
  .gift-group-header { font-size: 14px; }
}

/* 标签 + 快捷下拉 并排布局（用于按钮1跳转网址等） */
.label-with-quick {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
}
.label-with-quick .label { margin-bottom: 0; }
.quick-select {
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid var(--primary);
  background: rgba(79, 124, 255, .08);
  color: var(--primary);
  cursor: pointer;
  max-width: 55%;
  font-family: inherit;
  outline: none;
  transition: background .15s, border-color .15s;
}
.quick-select:hover { background: rgba(79, 124, 255, .18); }
.quick-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(79, 124, 255, .15);
}
@media (max-width: 600px) {
  .quick-select { max-width: 60%; font-size: 11px; padding: 4px 8px; }
}

/* ================= 邮件设置 ================= */
.em-tag-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.em-tag-btn {
  display: inline-block;
  padding: 3px 10px;
  font-size: 12px;
  color: var(--primary);
  background: rgba(79, 124, 255, .1);
  border: 1px solid rgba(79, 124, 255, .3);
  border-radius: 4px;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.em-tag-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.em-tag-btn:active { transform: scale(.96); }

.em-editor-preview {
  display: flex;
  gap: 12px;
  align-items: stretch;
}
.em-editor-side {
  flex: 1;
  min-width: 0;
}
.em-editor-side textarea {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  padding: 10px;
  resize: vertical;
  background: #fff;
}
.em-editor-side textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(79, 124, 255, .15);
}
.em-preview-side {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}
.em-preview-label {
  font-size: 12px;
  font-weight: 600;
  color: #374151;
  margin-bottom: 6px;
  padding: 4px 8px;
  background: #eef2ff;
  border-radius: 4px;
}
.em-preview-iframe {
  flex: 1;
  min-height: 380px;
  width: 100%;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  background: #fff;
}
@media (max-width: 768px) {
  .em-editor-preview {
    flex-direction: column;
  }
  .em-preview-iframe {
    min-height: 280px;
  }
}

/* ================= 后台 UI 手机端适配 ================= */
@media (max-width: 768px) {
  /* 顶栏：缩小内边距，右侧紧凑 */
  .admin-bar {
    padding: 10px 12px;
    flex-wrap: wrap;
    gap: 6px;
  }
  .admin-bar .brand {
    font-size: 14px;
  }
  .admin-bar .right {
    gap: 6px;
    font-size: 12px;
  }
  .admin-bar .right .muted {
    display: none; /* 手机端隐藏管理员文字信息，只留按钮 */
  }

  /* Tab 标签栏：横向滚动，不换行 */
  .tabs {
    padding: 8px 10px;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }
  .tabs::-webkit-scrollbar {
    height: 3px;
  }
  .tabs::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 2px;
  }
  .tab {
    padding: 6px 12px;
    font-size: 13px;
    white-space: nowrap;
    flex-shrink: 0;
  }

  /* 主内容区：减小内边距 */
  .admin-main {
    padding: 10px;
  }

  /* 卡片：满宽，减小内边距 */
  .admin-main .card {
    max-width: 100% !important;
    padding: 14px;
  }
  .admin-main .card.wide {
    max-width: 100% !important;
  }

  /* 工具栏：紧凑排列 */
  .toolbar {
    gap: 6px;
  }
  .toolbar select,
  .toolbar input {
    min-width: 100px;
    font-size: 13px;
  }

  /* 按钮：缩小尺寸 */
  .btn-sm {
    padding: 5px 10px;
    font-size: 12px;
  }

  /* 表单网格：单列 */
  .form-grid {
    grid-template-columns: 1fr;
  }

  /* 上传行：堆叠 */
  .upload-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .upload-row label {
    min-width: 0;
  }
  .upload-row .size-tag {
    font-size: 11px;
  }

  /* 表格：紧凑 */
  table.data th,
  table.data td {
    padding: 8px 8px;
    font-size: 12px;
    white-space: nowrap;
  }

  /* 搜索栏 */
  .search-bar input {
    width: 100%;
  }

  /* 模态框：满宽 */
  .modal {
    max-width: 100%;
    padding: 16px;
    max-height: 85vh;
  }
  .modal.modal-wide {
    max-width: 100%;
  }

  /* card-inner 内嵌卡片：减小内边距 */
  .card-inner {
    padding: 12px !important;
  }

  /* actions 按钮组：紧凑 */
  .actions {
    gap: 6px;
  }

  /* 邮件编辑器 textarea：减小高度 */
  .em-editor-side textarea {
    min-height: 240px;
    font-size: 11px;
  }

  /* 跨度文字 */
  .note {
    font-size: 12px;
    padding: 8px 10px;
  }

  /* 固定宽度输入框：手机端自动满宽 */
  input[style*="width:220px"],
  input[style*="width: 220px"] {
    width: 100% !important;
  }
}

@media (max-width: 480px) {
  /* 超窄屏：进一步压缩 */
  .admin-bar {
    padding: 8px 10px;
  }
  .admin-bar .brand {
    font-size: 13px;
  }
  .admin-main {
    padding: 6px;
  }
  .admin-main .card {
    padding: 10px;
  }
  .tab {
    padding: 5px 10px;
    font-size: 12px;
  }
  .btn-sm {
    padding: 4px 8px;
    font-size: 11px;
  }
  table.data th,
  table.data td {
    padding: 6px 6px;
    font-size: 11px;
  }
}

/* ================= 黑色按钮 ================= */
.btn-dark {
  background: #1f2937;
  color: #fff;
  border: 1px solid #111827;
}
.btn-dark:hover {
  background: #111827;
}
.btn-dark:active {
  transform: scale(.98);
}
.btn-dark:disabled {
  opacity: .6;
  cursor: not-allowed;
}

/* ================= 查询页邮件订阅区 ================= */
.subscribe-area {
  margin-top: 12px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.4);
  border-radius: 8px;
}

/* ================= 底部文字条 ================= */
.footer-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 6px 16px;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  font-size: 12px;
  text-align: center;
  line-height: 1.5;
  z-index: 999;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  pointer-events: none;
}
.subscribe-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px;
  color: #374151;
  user-select: none;
}
.subscribe-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: var(--primary);
}
.subscribe-label input[type="checkbox"]:disabled {
  cursor: not-allowed;
  opacity: .4;
}
.subscribe-email-box {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  align-items: center;
}
.subscribe-email-box .query-input {
  flex: 1;
  min-width: 0;
}

/* ============ 歌单前端页 ============ */
.song-card {
  max-width: 640px;
  padding: 36px 32px;
}
.song-title {
  text-align: center;
  margin-bottom: 22px;
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
}
.song-search-wrap {
  margin-bottom: 18px;
}
.song-search {
  width: 100%;
  padding: 13px 16px;
  font-size: 15px;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.85);
  box-sizing: border-box;
  outline: none;
  transition: border-color .2s;
}
.song-search:focus {
  border-color: var(--primary);
}
.song-msg {
  font-size: 13px;
  min-height: 18px;
  margin-bottom: 8px;
}
.song-results {
  margin-top: 4px;
}
.song-group {
  margin-bottom: 24px;
}
.song-group:last-child {
  margin-bottom: 0;
}
.song-group-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  cursor: pointer;
  user-select: none;
}
.song-group-title:hover {
  color: var(--primary);
}
.song-group-arrow {
  font-size: 11px;
  color: #9ca3af;
  flex-shrink: 0;
  transition: transform .2s;
}
.song-group.folded .song-group-arrow {
  transform: rotate(-90deg);
}
.song-group-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.song-group-count {
  font-size: 12px;
  font-weight: 400;
  color: #9ca3af;
  flex-shrink: 0;
}
.song-group.folded .song-list {
  display: none;
}
.song-group.folded .song-group-title {
  margin-bottom: 0;
  border-bottom-style: dashed;
}
.song-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.song-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 14px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: background .15s, transform .1s;
  user-select: none;
}
.song-item:hover {
  background: rgba(59, 130, 246, 0.12);
}
.song-item:active {
  transform: scale(0.98);
}
.song-item-name {
  font-size: 15px;
  color: var(--text);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.song-item-icon {
  font-size: 13px;
  opacity: 0.4;
  margin-left: 8px;
  flex-shrink: 0;
}
.song-item:hover .song-item-icon {
  opacity: 0.8;
}
.song-empty {
  text-align: center;
  padding: 30px 0;
  color: #9ca3af;
  font-size: 14px;
}

/* ============ 歌单后台管理 ============ */
.song-admin-group {
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
}
.song-admin-group-header {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 10px 12px;
  background: #f3f4f6;
}
.song-admin-songs {
  padding: 10px 12px;
}
.song-admin-song {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 6px;
}
.song-admin-add {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed #e5e7eb;
}

/* ============ 歌单页移动端 ============ */
@media (max-width: 600px) {
  .song-card { padding: 24px 18px; }
  .song-title { font-size: 20px; }
  .song-group-title { font-size: 15px; gap: 6px; }
  .song-group-arrow { font-size: 10px; }
  .song-group-count { font-size: 11px; }
  .song-item { padding: 11px 12px; }
  .song-item-name { font-size: 14px; }
}

/* ================= 顶部滚动条幅（前端所有页面） ================= */
.top-banner {
  position: fixed;
  top: 18px;
  left: 128px;   /* 避开左上角两个跳转按钮（16+48+10+48=122，留余量） */
  right: 64px;   /* 避开右上角退出登录按钮（16+36+8=60，留余量） */
  height: 36px;
  z-index: 40;
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 18px;
  overflow: hidden;
  cursor: pointer;
  display: flex;
  align-items: center;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.top-banner-track {
  display: inline-block;
  white-space: nowrap;
  padding-left: 100%;
  color: #fff;
  font-size: 14px;
  animation: banner-scroll 16s linear infinite;
  will-change: transform;
}
.top-banner:hover .top-banner-track { animation-play-state: paused; }
@keyframes banner-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}
/* 后台设置页内的静态预览条幅 */
.top-banner.preview {
  position: static;
  left: auto;
  right: auto;
  width: 100%;
  border-radius: 10px;
  cursor: default;
}
@media (max-width: 600px) {
  .top-banner { left: 122px; right: 58px; height: 32px; border-radius: 16px; }
  .top-banner-track { font-size: 12px; }
}

/* ================= 后台手机端适配增强 ================= */
@media (max-width: 768px) {
  /* 输入控件 16px：防止 iOS Safari 聚焦自动放大页面 */
  .admin-main input,
  .admin-main select,
  .admin-main textarea { font-size: 16px !important; }
  /* Tab 标签栏吸顶：长页面滚动时随时切换模块 */
  .tabs {
    position: sticky;
    top: 0;
    z-index: 60;
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.08);
  }
  /* 按钮组/工具栏自动换行，触控目标加大 */
  .actions { flex-wrap: wrap; }
  .btn-sm { min-height: 34px; }
  .toolbar { flex-wrap: wrap; }
  .toolbar select,
  .toolbar input { flex: 1 1 120px; }
  /* 模态框圆角与内边距 */
  .modal { border-radius: 12px; }
  /* 固定宽度输入框手机端满宽（覆盖更多尺寸） */
  input[style*="width:260px"],
  input[style*="width: 260px"],
  input[style*="width:280px"],
  input[style*="width: 280px"] { width: 100% !important; }
}

/* ================= 后台全局美化 v2 + 手机端适配增强（20260818e） ================= */

/* ---------- 页面底色：柔和渐变（仅后台 body，不影响前端页） ---------- */
body.admin-body {
  background: linear-gradient(160deg, #eef2f8 0%, #f6f8fb 45%, #eef1f7 100%) fixed !important;
}

/* ---------- 顶栏：深色渐变 + 品牌光点 + 阴影 ---------- */
.admin-bar {
  background: linear-gradient(90deg, #111827 0%, #1f2937 55%, #273244 100%);
  box-shadow: 0 2px 12px rgba(15, 23, 42, .28);
}
.admin-bar .brand { display: flex; align-items: center; gap: 8px; letter-spacing: .3px; }
.admin-bar .brand::before {
  content: ""; width: 8px; height: 8px; border-radius: 50%;
  background: linear-gradient(135deg, #4f7cff, #38bdf8);
  box-shadow: 0 0 8px rgba(79, 124, 255, .9);
  flex: none;
}

/* ---------- Tab 标签：胶囊化 + 平滑过渡 ---------- */
.tabs { gap: 6px; }
.tab { transition: color .15s, background .15s, box-shadow .15s; border: 1px solid transparent; }
.tab:hover { color: var(--primary); background: rgba(79, 124, 255, .08); }
.tab.active {
  background: #fff;
  color: var(--primary);
  border-color: rgba(79, 124, 255, .25);
  box-shadow: 0 2px 8px rgba(79, 124, 255, .18);
}

/* ---------- 卡片：实底白卡（后台可读性优先，替代半透明毛玻璃） ---------- */
.admin-main .card {
  background: #fff;
  backdrop-filter: none;
  border: 1px solid #e8ecf3;
  border-radius: 14px;
  box-shadow: 0 4px 16px rgba(15, 23, 42, .06);
}

/* ---------- 表格：斑马纹 + 圆角容器 + 表头质感 ---------- */
.table-scroll { border: 1px solid #e8ecf3; border-radius: 12px; background: #fff; }
.table-scroll table.data { box-shadow: none; }
table.data th {
  position: sticky; top: 0; z-index: 5;
  background: #f1f4f9; color: #475569;
  letter-spacing: .4px; white-space: nowrap;
  box-shadow: inset 0 -1px 0 #e2e8f0;
}
table.data tbody tr:nth-child(even) td { background: #fafbfd; }
table.data tr:hover td { background: #f0f5ff !important; }

/* ---------- 工具栏 / 搜索栏：统一圆角 ---------- */
.toolbar select, .toolbar input { border-radius: 10px; }
.search-bar input { border-radius: 10px; max-width: 420px; }

/* ---------- 按钮：键盘焦点环（无障碍）+ 主按钮微立体 ---------- */
.btn:focus-visible, .tab:focus-visible {
  outline: none; box-shadow: 0 0 0 3px rgba(79, 124, 255, .35);
}
.btn-primary { box-shadow: 0 2px 8px rgba(79, 124, 255, .32); }
.btn-primary:hover { box-shadow: 0 4px 12px rgba(79, 124, 255, .4); }

/* ---------- 弹窗：遮罩毛玻璃 + 内容上浮动画 ---------- */
.modal-mask { background: rgba(15, 23, 42, .5); backdrop-filter: blur(3px); }
.modal-mask.show { animation: adminFadeIn .18s ease-out; }
.modal { animation: adminSlideUp .22s cubic-bezier(.16, 1, .3, 1); box-shadow: 0 20px 50px rgba(15, 23, 42, .25); }
@keyframes adminFadeIn { from { opacity: 0; } }
@keyframes adminSlideUp { from { opacity: 0; transform: translateY(14px) scale(.985); } }

/* ---------- Toast：胶囊形 + 毛玻璃 ---------- */
.toast { border-radius: 999px; backdrop-filter: blur(6px); box-shadow: 0 10px 28px rgba(15, 23, 42, .35); }

/* ---------- 细滚动条（WebKit） ---------- */
.admin-main ::-webkit-scrollbar { width: 8px; height: 8px; }
.admin-main ::-webkit-scrollbar-thumb { background: #c4cddb; border-radius: 4px; }
.admin-main ::-webkit-scrollbar-thumb:hover { background: #a8b4c8; }
.admin-main ::-webkit-scrollbar-track { background: transparent; }

/* ---------- 手机端（≤768px）增强 ---------- */
@media (max-width: 768px) {
  /* 修复：admin-bar 与 .tabs 同时 sticky top:0 会互相遮挡——
     手机端顶栏改为随页滚动，仅 Tab 栏吸顶 */
  .admin-bar { position: static; }
  .tabs { top: 0; }

  /* 弹窗按钮：等宽铺满，触控易点 */
  .modal .actions { flex-wrap: wrap; }
  .modal .actions .btn { flex: 1 1 auto; min-width: 44%; }

  /* 搜索输入满宽 */
  .search-bar { flex-wrap: wrap; }
  .search-bar input { max-width: 100%; }

  /* 并排字段堆叠 */
  .field-row { flex-direction: column; }

  /* 主操作按钮整行（提交/保存类） */
  .actions-row { flex-wrap: wrap; }
  .actions-row .btn { flex: 1 1 100%; }

  /* 表格触控滚动顺滑 */
  .table-scroll { -webkit-overflow-scrolling: touch; }

  /* Tab 栏：贴边起滚 + 隐藏滚动条 */
  .tabs { scroll-snap-type: x proximity; }
  .tab { scroll-snap-align: start; }
  .tabs::-webkit-scrollbar { display: none; }

  /* 顶栏版本徽标文字压缩隐藏 */
  .admin-bar .brand span { display: none; }
}

/* ---------- 超窄屏（≤480px）：纯色底 + 更紧凑 ---------- */
@media (max-width: 480px) {
  body.admin-body { background: #f3f5f9 !important; }
  .admin-main .card { border-radius: 12px; }
  .modal { border-radius: 12px; }
  .modal .actions .btn { min-width: 100%; }
}

/* ================= 手机端侧边栏导航（20260818g） ================= */
/* 桌面端：汉堡按钮隐藏，Tab 保持横向 */
.admin-menu-btn {
  display: none;
  width: 38px; height: 38px;
  padding: 0;
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 8px;
  background: rgba(255,255,255,.08);
  cursor: pointer;
  flex: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.admin-menu-btn span {
  display: block;
  width: 18px; height: 2px;
  border-radius: 1px;
  background: #e5e7eb;
  transition: transform .2s, opacity .2s;
}
.admin-menu-btn:active { background: rgba(255,255,255,.18); }
/* 打开状态：三线变 ✕ */
.admin-menu-btn.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.admin-menu-btn.open span:nth-child(2) { opacity: 0; }
.admin-menu-btn.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* 侧边栏遮罩 */
.tabs-mask {
  display: none;
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, .5);
  z-index: 110;
  opacity: 0;
  transition: opacity .2s;
}
.tabs-mask.show { display: block; opacity: 1; }

@media (max-width: 768px) {
  /* 汉堡按钮仅在手机端显示 */
  .admin-menu-btn { display: flex; }

  /* Tab 栏 → 左侧抽屉：覆盖此前的 sticky 吸顶规则 */
  .tabs {
    position: fixed !important;
    top: 0; left: 0; bottom: 0;
    width: 232px; max-width: 82vw;
    flex-direction: column;
    flex-wrap: nowrap;
    padding: 14px 10px 20px !important;
    background: #fff;
    box-shadow: 4px 0 24px rgba(15, 23, 42, .18);
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform .22s cubic-bezier(.16, 1, .3, 1);
    z-index: 120;
    scroll-snap-type: none;
  }
  .tabs.sidebar-open { transform: translateX(0); }

  /* 侧边栏内的 Tab 项：整行大触控区 */
  .tab {
    display: block;
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    white-space: nowrap;
    border-radius: 10px;
    scroll-snap-align: none;
    text-align: left;
  }
  .tabs::-webkit-scrollbar { display: none; }

  /* 侧边栏打开时锁定页面滚动 */
  body.sidebar-lock { overflow: hidden; }
}

/* 平板横屏及以上：残留状态自动复位（transform 由媒体查询自然失效） */
@media (min-width: 769px) {
  .tabs-mask.show { display: none !important; }
}

/* ================= 弹幕记录标签页（DanmuRecorder 后台嵌入，20260819a） ================= */
.danmu-admin-card { max-width: 1280px; }
.danmu-head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.danmu-head > div:first-child { flex: 1 1 380px; min-width: 0; }
.danmu-head-btns { display: flex; gap: 8px; flex: none; flex-wrap: wrap; }
.danmu-config {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  padding: 12px 14px;
  margin-bottom: 14px;
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
}
.danmu-frame-wrap {
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  background: #fff;
  overflow: hidden;
  box-shadow: 0 4px 14px rgba(15, 23, 42, .06);
}
#danmuFrame {
  display: block;
  width: 100%;
  height: calc(100vh - 320px);
  min-height: 480px;
  border: 0;
  background: #f3f5f9;
}
.danmu-empty {
  padding: 56px 20px;
  text-align: center;
  border: 1px dashed #d7dce6;
  border-radius: 12px;
  background: #fafbfd;
}
@media (max-width: 768px) {
  .danmu-head-btns { width: 100%; }
  .danmu-head-btns .btn { flex: 1 1 auto; }
  .danmu-config .input { max-width: 100% !important; flex: 1 1 100%; }
  #danmuFrame { height: calc(100vh - 360px); min-height: 420px; }
}