/* 管理后台 — Industry 设计 token（README「Design Tokens」）自建实现 */
:root {
  --bg: #f2f2f3;
  --text: #1d1f20;
  --accent: #5980a6;
  --accent-100: #e3eaf1;
  --accent-300: #9db4ca;
  --accent-400: #7f9cb9;
  --accent-600: #4a708f;
  --accent-700: #416180;
  --accent-900: #1d2d3d;
  --divider: rgba(29, 31, 32, .16);
  --neutral-600: #6f7377;
  --font-heading: "Barlow Condensed", "Arial Narrow", "Microsoft Yahei", sans-serif;
  --shadow-lg: 0 12px 32px rgba(29, 31, 32, .18);
}
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--text);
  font-family: "Barlow", "Segoe UI", "Microsoft Yahei", Arial, sans-serif;
  font-size: 14px; line-height: 1.6; text-wrap: pretty;
}
a { color: var(--accent-700); text-decoration: none; }
a:hover { color: var(--accent-600); }
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 600; }

/* ---------- 布局 ---------- */
.layout { display: grid; grid-template-columns: 230px minmax(0, 1fr); min-height: 100vh; }
.sidebar {
  background: var(--accent-900); color: #fff; display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh; overflow: auto;
}
.brand { padding: 22px 22px 18px; border-bottom: 1px solid rgba(255, 255, 255, .14); }
.brand-name { font-family: var(--font-heading); font-weight: 600; font-size: 20px; letter-spacing: .02em; }
.brand-sub { font-size: 11px; letter-spacing: .18em; text-transform: uppercase; color: rgba(255, 255, 255, .55); margin-top: 3px; }
.sidebar nav { padding: 12px 0; flex: 1; }
.nav-group { padding: 18px 22px 6px; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: rgba(255, 255, 255, .42); }
.nav-item {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  color: rgba(255, 255, 255, .78); font-size: 14px; padding: 9px 22px;
}
.nav-item:hover { background: rgba(255, 255, 255, .10); color: rgba(255, 255, 255, .92); }
.nav-item.on { background: var(--accent-700); color: #fff; }
.badge {
  background: var(--accent-400); color: var(--accent-900); font-size: 11px; font-weight: 600;
  padding: 1px 8px; font-variant-numeric: tabular-nums;
}
.sidebar-foot { padding: 18px 22px; border-top: 1px solid rgba(255, 255, 255, .14); display: flex; gap: 14px; }
.sidebar-foot a { color: var(--accent-300); font-size: 14px; }
.sidebar-foot a:hover { color: #fff; }

.main { min-width: 0; display: flex; flex-direction: column; }
.topbar {
  display: flex; align-items: center; gap: 16px; padding: 16px clamp(20px, 3vw, 40px);
  border-bottom: 1px solid var(--divider); background: rgba(242, 242, 243, .94);
  position: sticky; top: 0; z-index: 20; backdrop-filter: blur(8px);
}
.topbar h2 { font-size: 24px; margin: 0; flex: 1; }
.searchform { margin: 0; }
.searchform .input { max-width: 220px; }
.body { padding: 28px clamp(20px, 3vw, 40px) 72px; flex: 1; }
.hint { margin: 0 0 16px; font-size: 12.5px; color: rgba(29, 31, 32, .55); }

/* ---------- 卡片（blueprint + 四角注册标） ---------- */
.blueprint { position: relative; background: #fff; border: 1px solid var(--divider); }
.corner { position: absolute; width: 11px; height: 11px; pointer-events: none; }
.corner.tl { top: -6px; left: -6px; }
.corner.tr { top: -6px; right: -6px; }
.corner.bl { bottom: -6px; left: -6px; }
.corner.br { bottom: -6px; right: -6px; }
.corner::before { content: ''; position: absolute; left: 5px; top: 0; width: 1px; height: 11px; background: var(--accent); }
.corner::after { content: ''; position: absolute; top: 5px; left: 0; height: 1px; width: 11px; background: var(--accent); }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 28px; }
.stat { padding: 20px 22px; }
.stat-label { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; font-weight: 600; color: var(--accent-700); }
.stat-value { font-family: var(--font-heading); font-weight: 600; font-size: 42px; line-height: 1.1; margin-top: 10px; font-variant-numeric: tabular-nums; }
.stat-sub { font-size: 12px; color: rgba(29, 31, 32, .55); margin-top: 6px; }
.quick-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 28px; }
.dash-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 32px; margin-top: 44px; }
.panel-head { display: flex; align-items: center; padding: 12px 20px; border-bottom: 1px solid var(--divider); }
.panel-head span { flex: 1; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; font-weight: 600; }

/* ---------- 表格 ---------- */
.table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--divider); }
.table th {
  text-align: left; font-size: 12px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent-700); font-weight: 600; padding: 10px 14px; border-bottom: 1px solid var(--divider);
  white-space: nowrap;
}
.table td { padding: 10px 14px; border-bottom: 1px solid var(--divider); font-size: 14px; vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }
.table tbody tr:hover td { background: rgba(89, 128, 166, .06); }
.table .num { font-variant-numeric: tabular-nums; }
.table .strong { font-weight: 600; font-size: 15px; }
.table .muted { color: rgba(29, 31, 32, .62); }
.table .ellip { max-width: 340px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.table .nowrap { white-space: nowrap; }
.table .clickable { cursor: pointer; }
.row-actions { display: flex; gap: 2px; align-items: center; }
.row-actions form { margin: 0; display: inline-flex; }
.empty-row td { color: rgba(29, 31, 32, .5); text-align: center; padding: 26px; }

.tag { display: inline-block; font-size: 11px; font-weight: 600; padding: 2px 8px; }
.tag-accent { background: var(--accent-100); color: var(--accent-700); }
.tag-neutral { background: #e4e4e6; color: var(--neutral-600); }

/* ---------- 按钮 / 表单 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font: inherit; font-size: 14px; padding: 8px 16px; border: 1px solid transparent;
  background: transparent; cursor: pointer; border-radius: 0; color: var(--text);
}
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.btn-primary { background: var(--accent-700); color: #fff; }
.btn-primary:hover { background: var(--accent-600); }
.btn-secondary { border-color: var(--accent-700); color: var(--accent-700); background: #fff; }
.btn-secondary:hover { background: rgba(89, 128, 166, .10); }
.btn-ghost { color: var(--accent-700); font-size: 12px; padding: 4px 8px; }
.btn-ghost:hover { background: rgba(89, 128, 166, .12); }
.btn-ghost.danger { color: var(--neutral-600); }
.btn-ghost.mini { padding: 4px 6px; }

.input {
  font: inherit; font-size: 14px; color: var(--text); background: #fff;
  border: 1px solid var(--divider); padding: 8px 10px; width: 100%; box-sizing: border-box;
  border-radius: 0;
}
.input:focus-visible { outline: 2px solid var(--accent); outline-offset: 0; }
textarea.input { resize: vertical; line-height: 1.6; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field > label { font-size: 12px; letter-spacing: .06em; color: rgba(29, 31, 32, .6); font-weight: 600; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field-row3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 16px; }
.form-stack { display: flex; flex-direction: column; gap: 14px; }
.with-upload { display: flex; gap: 8px; align-items: flex-start; }
.with-upload .input { flex: 1; }
.upload-btn { white-space: nowrap; }

/* ---------- 弹窗 / 提示 ---------- */
.dialog-backdrop {
  position: fixed; inset: 0; background: rgba(29, 31, 32, .45); z-index: 80;
  display: flex; align-items: center; justify-content: center; padding: 24px;
}
[hidden] { display: none !important; }
.dialog {
  background: #fff; padding: 24px 26px; width: min(520px, 94vw);
  box-shadow: var(--shadow-lg); max-height: 88vh; overflow: auto; box-sizing: border-box;
}
.dialog.wide { width: min(680px, 94vw); }
.dialog-title { font-family: var(--font-heading); font-size: 20px; font-weight: 600; margin: 0 0 16px; }
.dialog-body { font-size: 14px; margin: 0 0 6px; }
.dialog-meta { font-size: 13px; color: rgba(29, 31, 32, .6); }
.dialog-content { font-size: 14.5px; line-height: 1.8; margin: 0; white-space: pre-wrap; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }
.dialog .hr { border: 0; border-top: 1px solid var(--divider); margin: 10px 0; }

.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%); z-index: 100;
  background: var(--accent-900); color: #fff; padding: 10px 22px; font-size: 14px;
  box-shadow: var(--shadow-lg);
}

/* ---------- 登录页 ---------- */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg); }
.login-card { width: min(380px, 92vw); padding: 34px 36px 30px; }
.login-card h1 { font-size: 26px; margin: 0; }
.login-sub { font-size: 11px; letter-spacing: .18em; text-transform: uppercase; color: rgba(29, 31, 32, .5); margin: 4px 0 24px; }
.login-card .form-stack { gap: 16px; }
.login-tip { font-size: 12.5px; color: rgba(29, 31, 32, .55); margin-top: 16px; }
.login-error { background: #f8e8e8; color: #a33; font-size: 13px; padding: 8px 12px; margin-bottom: 14px; }

/* ---------- 备份 ---------- */
.backup-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 32px; max-width: 1000px; }
.backup-card { padding: 24px 26px; display: flex; flex-direction: column; gap: 10px; }
.backup-card h4 { margin: 0; font-size: 17px; }
.backup-card p { font-size: 13.5px; line-height: 1.7; margin: 0; flex: 1; color: rgba(29, 31, 32, .7); }

/* ---------- 设置/关于 表单卡 ---------- */
.form-card { padding: 28px 32px; max-width: 840px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px 24px; }
.form-grid .full { grid-column: 1 / -1; }
.form-foot { display: flex; align-items: center; gap: 14px; margin-top: 26px; }
.form-foot .note { font-size: 12px; color: rgba(29, 31, 32, .55); }