/* Offercome 账号中心 —— 设计令牌 + 组件体系（无框架，纯 CSS）
   主题：亮色为基准；深色经 prefers-color-scheme 跟随系统，
   或经 html[data-theme] 手动覆盖（localStorage 记忆）。 */

:root {
  --bg-app: #f7f6f3;
  --bg-surface: #ffffff;
  --bg-inset: #f5f4f1;
  --bg-hover: #f0efec;
  --border-subtle: #ebeae6;
  --border-default: #e0dfda;
  --text-primary: #1a1a18;
  --text-secondary: #6b6a66;
  --text-tertiary: #9b9a94;
  --accent: #1a1a18;
  --accent-hover: #333330;
  --accent-fg: #ffffff;
  --success: #2e7d5b;
  --warning: #b8791f;
  --danger: #c0392b;
  --ok-bg: #e8f3ee;
  --warn-bg: #fdf3e3;
  --danger-bg: #fbeae8;
  --chart-bar: #2e7d5b;
  --chart-bar-hover: #1f5c42;
  --focus-ring: rgba(26, 26, 24, 0.35);
  --radius: 10px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-pop: 0 8px 30px rgba(0, 0, 0, 0.12);
  color-scheme: light;
}

[data-theme="dark"] {
  --bg-app: #161615;
  --bg-surface: #1f1f1d;
  --bg-inset: #262624;
  --bg-hover: #2b2b29;
  --border-subtle: #2c2c2a;
  --border-default: #383836;
  --text-primary: #ececea;
  --text-secondary: #a3a29c;
  --text-tertiary: #757470;
  --accent: #ececea;
  --accent-hover: #d6d5d1;
  --accent-fg: #1a1a18;
  --success: #57b389;
  --warning: #d9a04c;
  --danger: #e0705f;
  --ok-bg: #1d2f27;
  --warn-bg: #322a1a;
  --danger-bg: #33201d;
  --chart-bar: #57b389;
  --chart-bar-hover: #79c7a3;
  --focus-ring: rgba(236, 236, 234, 0.35);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-pop: 0 8px 30px rgba(0, 0, 0, 0.5);
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-app: #161615;
    --bg-surface: #1f1f1d;
    --bg-inset: #262624;
    --bg-hover: #2b2b29;
    --border-subtle: #2c2c2a;
    --border-default: #383836;
    --text-primary: #ececea;
    --text-secondary: #a3a29c;
    --text-tertiary: #757470;
    --accent: #ececea;
    --accent-hover: #d6d5d1;
    --accent-fg: #1a1a18;
    --success: #57b389;
    --warning: #d9a04c;
    --danger: #e0705f;
    --ok-bg: #1d2f27;
    --warn-bg: #322a1a;
    --danger-bg: #33201d;
    --chart-bar: #57b389;
    --chart-bar-hover: #79c7a3;
    --focus-ring: rgba(236, 236, 234, 0.35);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-pop: 0 8px 30px rgba(0, 0, 0, 0.5);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg-app);
  color: var(--text-primary);
  font: 14px/1.6 -apple-system, 'PingFang SC', 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* ------------------------------------------------------------ 顶栏与导航 */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
}

.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark { width: 22px; height: 22px; flex: none; }
.brand-mark rect { fill: var(--accent); }
.brand-mark text { fill: var(--accent-fg); font-size: 13px; font-weight: 700; font-family: inherit; }

.nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }

/* 导航分组：组标签是小字上标，组内项之间不留缝，组与组之间留一道细分隔。
   ★ 只做视觉分组 —— 每一项仍然是一个普通链接，键盘 Tab 顺序不变。 */
.nav-group { display: inline-flex; align-items: center; gap: 2px; }
.nav-group + .nav-group { margin-left: 6px; padding-left: 8px; border-left: 1px solid var(--border-default); }
.nav-group-label {
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
  opacity: 0.7;
  padding: 0 4px 0 2px;
  user-select: none;
}
@media (max-width: 900px) {
  /* 窄屏下 nav 竖排：组标签独占一行，分隔线换成上边线 */
  .nav-group { display: flex; flex-wrap: wrap; }
  .nav-group + .nav-group { margin-left: 0; padding-left: 0; border-left: none; }
}

.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  /* ★ 8px 而不是 10px：导航从 9 个平级项改成三组之后多了组标签与分隔线，
     10px 的左右内边距会把主题切换按钮挤到第二行（1280 宽实测）。 */
  padding: 5px 8px;
  border-radius: 7px;
  transition: color 0.15s ease, background-color 0.15s ease;
}
.nav a:hover { color: var(--text-primary); background: var(--bg-inset); }
.nav a.active { color: var(--text-primary); background: var(--bg-inset); font-weight: 600; }

.nav-toggle {
  display: none;
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
  color: var(--text-primary);
  border-radius: 8px;
  padding: 5px 8px;
  cursor: pointer;
}
.nav-toggle svg { width: 18px; height: 18px; display: block; }

.icon-btn {
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
  color: var(--text-secondary);
  border-radius: 8px;
  padding: 5px;
  margin-left: 6px;
  cursor: pointer;
  line-height: 0;
  transition: color 0.15s ease, background-color 0.15s ease;
}
.icon-btn:hover { color: var(--text-primary); background: var(--bg-inset); }
.icon-btn svg { width: 17px; height: 17px; }
.icon-btn .icon-sun { display: none; }
[data-theme="dark"] .icon-btn .icon-sun { display: block; }
[data-theme="dark"] .icon-btn .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-btn .icon-sun { display: block; }
  :root:not([data-theme="light"]) .icon-btn .icon-moon { display: none; }
}

/* ------------------------------------------------------------ 布局 */

.main { max-width: 1100px; margin: 0 auto; padding: 24px 24px 64px; }

.footer {
  padding: 16px 24px;
  color: var(--text-tertiary);
  font-size: 12px;
  text-align: center;
}

h1 { font-size: 22px; margin: 6px 0 18px; letter-spacing: -0.01em; }
h2 { font-size: 15px; margin: 0 0 12px; }

.page-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }

.crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-tertiary);
  margin-bottom: 4px;
}
.crumbs a { color: var(--text-tertiary); text-decoration: none; }
.crumbs a:hover { color: var(--text-primary); }
.crumbs b { color: var(--text-secondary); font-weight: 500; }

.grid-2col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
}
.grid-2col > .card { margin-bottom: 16px; }

/* ------------------------------------------------------------ 卡片 */

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 16px;
}

.card-warn { border-color: var(--warning); }

.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.card-head h2 { margin: 0; }

.collapse > summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  user-select: none;
}
.collapse > summary::-webkit-details-marker { display: none; }
.collapse > summary::before {
  content: '';
  width: 7px; height: 7px;
  border-right: 1.8px solid var(--text-tertiary);
  border-bottom: 1.8px solid var(--text-tertiary);
  transform: rotate(-45deg);
  transition: transform 0.15s ease;
  flex: none;
}
.collapse[open] > summary::before { transform: rotate(45deg); }
.collapse[open] > summary { margin-bottom: 10px; }

.auth-card {
  max-width: 400px;
  margin: 48px auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
}
.auth-sub { color: var(--text-tertiary); margin: -8px 0 16px; font-size: 13px; }
.auth-foot { margin-bottom: 0; }

/* ------------------------------------------------------------ 表单 */

.form { display: flex; flex-direction: column; gap: 12px; }

.field { display: flex; flex-direction: column; gap: 4px; color: var(--text-secondary); font-size: 13px; }
.field-label { display: flex; gap: 2px; }
.field-label .req { color: var(--danger); font-style: normal; }

.form input, .form select, .filterbar input, .filterbar select {
  padding: 8px 10px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  font: inherit;
  color: var(--text-primary);
  background: var(--bg-surface);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form input:focus, .form select:focus, .filterbar input:focus, .filterbar select:focus {
  outline: none;
  border-color: var(--text-tertiary);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.field-invalid input { border-color: var(--danger); }
.field-error { color: var(--danger); font-size: 12px; }
.field-hint { color: var(--text-tertiary); font-size: 12px; }

.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; align-items: start; }
.form-grid button[type="submit"] { grid-column: 1 / -1; justify-self: start; }

.form-inline-wide { flex-direction: row; flex-wrap: wrap; align-items: flex-end; gap: 12px; }
.form-inline-wide .field { flex: 1 1 180px; }
.form-inline-wide button[type="submit"] { margin-bottom: 1px; }

.filterbar {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
  align-items: center;
}
.filterbar input[type="search"] { flex: 1 1 200px; min-width: 160px; }
.range-label { display: inline-flex; align-items: center; gap: 6px; color: var(--text-secondary); font-size: 13px; }
.range-quick { display: inline-flex; gap: 6px; margin-left: auto; }

/* ------------------------------------------------------------ 按钮 */

.btn {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text-primary);
  font: inherit;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.05s ease;
  white-space: nowrap;
}
.btn:hover { background: var(--bg-inset); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-danger { color: var(--danger); border-color: var(--danger); background: var(--bg-surface); }
.btn-danger:hover { background: var(--danger-bg); }
.btn-ghost { border-color: transparent; color: var(--text-secondary); background: transparent; }
.btn-ghost:hover { background: var(--bg-inset); color: var(--text-primary); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-block { width: 100%; text-align: center; }

.link-btn {
  border: none; background: none; color: var(--text-secondary);
  font: inherit; cursor: pointer; padding: 5px 10px; border-radius: 7px;
  transition: color 0.15s ease, background-color 0.15s ease;
}
.link-btn:hover { color: var(--text-primary); background: var(--bg-inset); }

.inline-form { display: inline; }

/* ------------------------------------------------------------ 提示条 */

.flash {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 13px;
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.flash.flash-hide { opacity: 0; transform: translateY(-4px); }
.flash-error { background: var(--danger-bg); color: var(--danger); }
.flash-ok { background: var(--ok-bg); color: var(--success); }
.flash-close {
  border: none; background: none; color: inherit; opacity: 0.6;
  font-size: 16px; line-height: 1; cursor: pointer; padding: 0 2px;
}
.flash-close:hover { opacity: 1; }

/* ------------------------------------------------------------ 表格 */

.table-wrap { overflow-x: auto; border-radius: var(--radius-sm); }

.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th {
  position: sticky; top: 0; z-index: 1;
  text-align: left; color: var(--text-tertiary); font-weight: 500;
  padding: 6px 10px; border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  white-space: nowrap;
}
.table td { padding: 9px 10px; border-bottom: 1px solid var(--border-subtle); vertical-align: top; }
.table tbody tr { transition: background-color 0.1s ease; }
.table tbody tr:hover { background: var(--bg-hover); }
.table tbody tr:last-child td { border-bottom: none; }
.table a { color: var(--text-primary); }

.table th[data-sort] { cursor: pointer; user-select: none; }
.table th[data-sort]:hover { color: var(--text-primary); }
.table th[data-sort].sorted-asc::after { content: ' ↑'; color: var(--text-primary); }
.table th[data-sort].sorted-desc::after { content: ' ↓'; color: var(--text-primary); }

.nowrap { white-space: nowrap; }
.cell-detail { max-width: 360px; overflow-wrap: anywhere; }
.th-actions { width: 1%; }
.td-actions { text-align: right; white-space: nowrap; }
.action-col form { margin-bottom: 4px; }
.action-col .btn { margin-left: 4px; }

.edit-row > td { background: var(--bg-inset); border-bottom: 1px solid var(--border-subtle); }
.edit-panel { display: flex; flex-direction: column; gap: 14px; padding: 6px 2px; }

/* ------------------------------------------------------------ 键值与徽标 */

.kv { display: grid; grid-template-columns: 96px 1fr; gap: 6px 16px; margin: 0; }
.kv dt { color: var(--text-tertiary); }
.kv dd { margin: 0; }

.badge {
  display: inline-block; padding: 1px 8px; border-radius: 6px;
  font-size: 12px; background: var(--bg-inset); color: var(--text-secondary);
  white-space: nowrap;
}
.badge-ok { background: var(--ok-bg); color: var(--success); }
.badge-warn { background: var(--warn-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }

.muted { color: var(--text-tertiary); }
.small { font-size: 12px; }
.text-danger { color: var(--danger); }
.text-warn { color: var(--warning); }
.gap-top { margin-top: 14px; }

/* ------------------------------------------------------------ 统计块 */

.stat-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 16px; }
.stat-tile {
  flex: 1 1 140px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex; flex-direction: column; gap: 2px;
  color: inherit; text-decoration: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
a.stat-tile:hover { border-color: var(--border-default); box-shadow: var(--shadow-pop); }
.stat-num { font-size: 22px; font-weight: 600; letter-spacing: -0.01em; }
.stat-sub { font-size: 13px; color: var(--text-tertiary); font-weight: 400; margin-left: 2px; }
.stat-label { color: var(--text-tertiary); font-size: 12px; }

.member-line { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.quick-links { display: flex; gap: 8px; flex-wrap: wrap; margin: 0; }

/* ------------------------------------------------------------ 进度条与额度 */

.progress {
  display: block; height: 8px; border-radius: 4px;
  background: var(--bg-inset); overflow: hidden;
}
.progress-fill {
  display: block; height: 100%; border-radius: 4px;
  background: var(--success);
  transition: width 0.4s ease;
}
.progress-danger .progress-fill { background: var(--danger); }

.quota { display: flex; flex-direction: column; gap: 8px; }
.quota-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.quota p { margin: 0; }

/* ------------------------------------------------------------ SVG 图表 */

.chart-wrap { overflow-x: auto; }
.chart { width: 100%; min-width: 520px; height: auto; display: block; }
.chart-grid { stroke: var(--border-subtle); stroke-width: 1; }
.chart-axis { stroke: var(--border-default); stroke-width: 1; }
.chart-ylabel, .chart-xlabel { fill: var(--text-tertiary); font-size: 10px; }
.chart-fill { fill: var(--chart-bar); transition: fill 0.15s ease; }
.chart-bar:hover .chart-fill { fill: var(--chart-bar-hover); }
.chart-hit { fill: transparent; }

/* ------------------------------------------------------------ 分页 */

.pagination {
  display: flex; align-items: center; gap: 4px; flex-wrap: wrap;
  margin-top: 14px; font-size: 13px;
}
.page-link {
  padding: 4px 10px; border-radius: 6px; text-decoration: none;
  color: var(--text-secondary); border: 1px solid transparent;
  transition: background-color 0.15s ease, color 0.15s ease;
}
a.page-link:hover { background: var(--bg-inset); color: var(--text-primary); }
.page-link.current { background: var(--accent); color: var(--accent-fg); font-weight: 600; }
.page-link.disabled { opacity: 0.4; }
.page-ellipsis { color: var(--text-tertiary); padding: 0 2px; }
.page-total { margin-left: auto; color: var(--text-tertiary); font-size: 12px; }

/* ------------------------------------------------------------ 空态 */

.empty {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 36px 20px; text-align: center;
}
.empty-icon { width: 44px; height: 44px; color: var(--text-tertiary); opacity: 0.7; }
.empty-title { margin: 0; font-weight: 600; color: var(--text-secondary); }
.empty-hint { margin: 0; font-size: 12px; color: var(--text-tertiary); max-width: 420px; }

/* ------------------------------------------------------------ 确认对话框 */

.confirm-dialog {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  background: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: var(--shadow-pop);
  padding: 22px;
  max-width: 380px;
  width: calc(100% - 48px);
}
.confirm-dialog::backdrop { background: rgba(0, 0, 0, 0.4); }
.confirm-message { margin: 0 0 18px; line-height: 1.7; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; }

/* ------------------------------------------------------------ 一次性机密展示 */

.secret-card { max-width: 560px; margin: 40px auto; }
.secret-box {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg-inset);
  border: 1px dashed var(--border-default);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin: 16px 0;
}
.secret-value {
  flex: 1;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.12em;
  overflow-wrap: anywhere;
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
}
.secret-notes { margin: 0 0 18px; padding-left: 18px; color: var(--text-secondary); }
.secret-notes li { margin-bottom: 4px; }

/* ------------------------------------------------------------ 其他 */

code {
  background: var(--bg-inset);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 12px;
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
}

.action-row { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.ua { overflow-wrap: anywhere; }

/* ------------------------------------------------------------ 响应式 */

@media (max-width: 960px) {
  .topbar-inner { padding: 10px 16px; }
  .main { padding: 16px 16px 56px; }
  .grid-2col { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }

  .nav-toggle { display: block; }
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-pop);
    padding: 10px 16px 14px;
    gap: 2px;
  }
  .nav.open { display: flex; }
  .nav a, .nav .link-btn { padding: 9px 10px; text-align: left; width: 100%; }
  .nav .inline-form { display: block; }
  .icon-btn { margin: 6px 0 0; align-self: flex-start; }
  .topbar { position: sticky; }
  .topbar-inner { position: relative; }

  .range-quick { margin-left: 0; }
  .td-actions { white-space: normal; }
}