/* ================= Design Tokens ================= */
:root {
  --bg: #F5F6F8; --card: #FFFFFF;
  --line: #EEF0F3; --line-2: #E2E8F0;
  --border: var(--line-2);
  --t1: #0F172A; --t2: #475569; --t3: #94A3B8;
  --ink: #111827; --brand: #2563EB;
  --success: #10B981; --warn: #F59E0B; --danger: #EF4444;
  --radius: 16px; --radius-sm: 10px;
  --shadow-card: 0 1px 2px rgba(15,23,42,.04), 0 8px 24px -12px rgba(15,23,42,.08);
  --shadow-hover: 0 2px 6px rgba(15,23,42,.06), 0 24px 40px -20px rgba(15,23,42,.12);
  --ease: cubic-bezier(.4,0,.2,1);
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --font: "Inter","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono: "JetBrains Mono","SF Mono",Consolas,ui-monospace,monospace;
  --transition-fast: .15s var(--ease);
  --transition-normal: .25s var(--ease);
  --transition-slow: .4s var(--ease-spring);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
html { height: 100%; }
body { min-height: 100%; }
body { margin:0; background: var(--bg); color: var(--t1); font-family: var(--font); font-size: 15px; line-height: 1.6; -webkit-font-smoothing: antialiased; opacity: 0; transition: opacity .35s var(--ease); overscroll-behavior-x: contain; }
body.page-loaded { opacity: 1; }
a { color: var(--brand); text-decoration: none; transition: color var(--transition-fast); }
a:hover { text-decoration: underline; }

/* ============ 顶部导航 ============ */
.header { position: sticky; top:0; z-index: 30; background: rgba(255,255,255,.72); backdrop-filter: saturate(180%) blur(16px); -webkit-backdrop-filter: saturate(180%) blur(16px); border-bottom: 1px solid rgba(255,255,255,.6); transition: box-shadow var(--transition-normal); }
.header.scrolled { box-shadow: 0 4px 20px -8px rgba(15,23,42,.08); }
.header-inner { max-width: 1080px; margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 16px; letter-spacing: -0.01em; color: var(--t1); }
.brand .brand-dot { width: 22px; height: 22px; border-radius: 7px; background: linear-gradient(135deg, #111827 0%, #334155 100%); box-shadow: inset 0 0 0 1px rgba(255,255,255,.15), 0 4px 10px -2px rgba(15,23,42,.25); transition: transform var(--transition-fast); }
.brand:hover .brand-dot { transform: scale(1.08) rotate(-4deg); }
.header-nav { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.header-right { display: flex; align-items: center; gap: 12px; }
.header-nav a { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 10px; color: var(--t2); font-size: 14px; white-space: nowrap; transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast); }
.user-chip { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 10px; background: var(--line); color: var(--t1); font-size: 14px; max-width: 200px; white-space: nowrap; }
.user-chip .user-chip-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.header-nav a:hover { background: var(--line); color: var(--t1); text-decoration: none; transform: translateY(-1px); }
.header-nav a:active { transform: translateY(0); }
.header-nav .logout { color: var(--t2); }
.header-nav .logout:hover { color: var(--danger); }
.header-nav-link.active { background: var(--ink) !important; color: #fff !important; }
.nav-toggle { display: none; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--line-2); background: var(--card); color: var(--t1); cursor: pointer; flex-shrink: 0; transition: background var(--transition-fast), color var(--transition-fast); }
.nav-toggle:hover { background: var(--line); color: var(--t1); }
.nav-toggle svg { width: 20px; height: 20px; display: block; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

/* ============ 主容器与栅格 ============ */
.main { max-width: 1080px; margin: 0 auto; padding: 28px 24px 80px; min-width: 0; overflow-x: hidden; }
.page-title { font-size: 22px; font-weight: 600; letter-spacing: -0.01em; margin: 4px 0 20px; animation: fadeSlideUp .4s var(--ease-spring); }
.page-sub { color: var(--t2); font-size: 14px; margin: -14px 0 22px; animation: fadeSlideUp .4s var(--ease-spring) .05s both; }
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.grid-5 { grid-template-columns: repeat(5, minmax(0,1fr)); }
@media (max-width: 900px) { .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; } }

/* ============ 自适应收缩 / 防横向溢出 ============ */
.grid > *, .card, .stat, .form-row, .form-group, .info-row, .key-box, .table-wrap { min-width: 0; }
.card, .stat, .key-box, .table-wrap { max-width: 100%; }
.stat-value { overflow: hidden; text-overflow: ellipsis; }
.info-val { overflow-wrap: anywhere; word-break: break-all; }

/* ============ 卡片 ============ */
.card { background: rgba(255,255,255,.75); backdrop-filter: saturate(180%) blur(16px); -webkit-backdrop-filter: saturate(180%) blur(16px); border: 1px solid rgba(255,255,255,.8); border-radius: var(--radius); padding: 24px; box-shadow: 0 8px 32px -8px rgba(15,23,42,.12), 0 2px 8px -2px rgba(15,23,42,.06); transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-fast); }
.card.hoverable:hover { transform: translateY(-2px); box-shadow: 0 12px 40px -12px rgba(15,23,42,.15); border-color: rgba(255,255,255,1); }
.card-title { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 0 0 16px; font-size: 15px; font-weight: 600; letter-spacing: -0.01em; color: var(--t1); }
.card-title small { font-weight: 400; color: var(--t3); font-size: 12px; }

/* ============ 站点图标设置 ============ */
.favicon-setting { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.favicon-preview { flex-shrink: 0; width: 64px; height: 64px; border-radius: 14px; border: 1px solid var(--line-2); background: #fff; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.favicon-preview img { width: 100%; height: 100%; object-fit: contain; display: block; }
.favicon-preview span { color: var(--t3); font-size: 12px; }
.favicon-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.card-desc { color: var(--t2); font-size: 13px; margin: -6px 0 16px; }
.stat { display: flex; flex-direction: column; gap: 6px; padding: 22px 24px; background: rgba(255,255,255,.75); backdrop-filter: saturate(180%) blur(12px); -webkit-backdrop-filter: saturate(180%) blur(12px); border: 1px solid rgba(255,255,255,.8); border-radius: var(--radius); box-shadow: 0 8px 32px -8px rgba(15,23,42,.12), 0 2px 8px -2px rgba(15,23,42,.06); transition: transform var(--transition-slow), box-shadow var(--transition-normal); }
.stat:hover { transform: translateY(-3px); box-shadow: 0 16px 48px -12px rgba(15,23,42,.18); }
.stat-label { color: var(--t3); font-size: 12px; letter-spacing: .04em; text-transform: uppercase; white-space: nowrap; }
.stat-value { font-size: clamp(20px, 1.6vw + 12px, 26px); font-weight: 600; letter-spacing: -0.02em; color: var(--t1); white-space: nowrap; }
.stat-hint { color: var(--t2); font-size: clamp(11px, 0.7vw + 5px, 12px); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.info-list { display: grid; grid-template-columns: 1fr; gap: 4px; }
.info-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px dashed var(--line); min-width: 0; transition: background var(--transition-fast); }
.info-row:last-child { border-bottom: 0; }
.info-row:hover { background: rgba(37,99,235,.02); }
.info-key { color: var(--t3); font-size: 13px; flex-shrink: 0; }
.info-val { color: var(--t1); font-size: 14px; text-align: right; min-width: 0; overflow-wrap: anywhere; word-break: break-all; }
.info-val.mono { font-family: var(--mono); }

/* ============ Badge ============ */
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 500; line-height: 1.6; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 999px; background: currentColor; opacity: .9; }
.badge-success { color: var(--success); background: rgba(16,185,129,.1); }
.badge-warn    { color: var(--warn);    background: rgba(245,158,11,.12); }
.badge-danger  { color: var(--danger);  background: rgba(239,68,68,.1); }
.badge-gray    { color: var(--t2);      background: rgba(71,85,105,.1); }
.badge-brand   { color: var(--brand);   background: rgba(37,99,235,.1); }
.badge-secondary { color: var(--t2);    background: rgba(71,85,105,.1); }

/* ============ 按钮 ============ */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 40px; padding: 0 16px; border-radius: var(--radius-sm); font-size: 14px; font-weight: 500; font-family: inherit; cursor: pointer; border: 1px solid transparent; transition: transform .12s var(--ease), background var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast); user-select: none; white-space: nowrap; position: relative; overflow: hidden; }
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
/* 加载态：显示旋转指示器并轻微呼吸，避免单纯变暗后像“卡住” */
.btn.is-loading { pointer-events: none; cursor: progress; animation: btnBreath 1.5s ease-in-out infinite; }
.btn-spinner {
  width: 15px; height: 15px; flex: 0 0 auto;
  border-radius: 50%;
  border: 2px solid currentColor;
  border-top-color: transparent;
  opacity: .9;
  animation: btnSpin .65s linear infinite;
}
@keyframes btnSpin { to { transform: rotate(360deg); } }
@keyframes btnBreath { 0%, 100% { opacity: .88; } 50% { opacity: 1; } }
.btn::before { content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%; background: linear-gradient(90deg, transparent, rgba(255,255,255,.18), transparent); transition: left .5s var(--ease); }
.btn:hover::before { left: 100%; }
.btn-primary { background: linear-gradient(135deg, #111827 0%, #334155 100%); color: #fff; box-shadow: 0 4px 12px -4px rgba(17,24,39,.3); }
.btn-primary:hover:not(:disabled) { background: linear-gradient(135deg, #0b1220 0%, #1e293b 100%); box-shadow: 0 6px 18px -4px rgba(17,24,39,.4); transform: translateY(-1px); }
.btn-primary:active:not(:disabled) { transform: scale(.97) translateY(0); }
.btn-secondary { background: rgba(255,255,255,.8); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); color: var(--t1); border-color: var(--line-2); }
.btn-secondary:hover:not(:disabled) { background: rgba(255,255,255,.95); border-color: #CBD5E1; transform: translateY(-1px); box-shadow: 0 4px 12px -4px rgba(15,23,42,.1); }
.btn-info { background: rgba(37,99,235,.12); color: #1D4ED8; border-color: rgba(37,99,235,.3); }
.btn-info:hover:not(:disabled) { background: rgba(37,99,235,.18); border-color: #2563EB; transform: translateY(-1px); box-shadow: 0 4px 12px -4px rgba(37,99,235,.25); }
.btn-danger { background: #fff; color: var(--danger); border-color: rgba(239,68,68,.4); }
.btn-danger:hover:not(:disabled) { background: rgba(239,68,68,.06); border-color: var(--danger); transform: translateY(-1px); box-shadow: 0 4px 12px -4px rgba(239,68,68,.2); }
.btn-ghost { background: transparent; color: var(--t2); }
.btn-ghost:hover:not(:disabled) { background: var(--line); color: var(--t1); }
.btn-block { width: 100%; }
.btn-sm { height: 32px; padding: 0 12px; font-size: 13px; }
.btn-group { display: flex; gap: 10px; flex-wrap: wrap; }

/* ============ 表单 ============ */
.form-row, .form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.form-row label, .form-group label { font-size: 13px; color: var(--t2); }
/* 文本域使用 .input 类时的兜底：确保不与单行输入框一样被压成一行 */
textarea.input { height: auto; min-height: 110px; padding: 12px 14px; line-height: 1.55; resize: vertical; }
.input, .select, .textarea { width: 100%; height: 42px; padding: 0 14px; border-radius: var(--radius-sm); border: 1px solid var(--line-2); background: rgba(255,255,255,.7); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); color: var(--t1); font-size: 14px; font-family: inherit; transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast); }
.textarea { height: auto; padding: 12px 14px; line-height: 1.55; resize: vertical; }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--ink); background: rgba(255,255,255,.92); box-shadow: 0 0 0 4px rgba(37,99,235,.1); }
.input.mono { font-family: var(--mono); letter-spacing: .02em; }
.form-help { color: var(--t3); font-size: 12px; margin-top: 4px; }
.captcha-row { display: flex; align-items: stretch; gap: 10px; }
.captcha-row .input { flex: 1; }
.captcha-img { height: 42px; width: 120px; border-radius: var(--radius-sm); border: 1px solid var(--line-2); background: #fff; overflow: hidden; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: border-color var(--transition-fast), transform var(--transition-fast); }
.captcha-img:hover { border-color: var(--ink); transform: scale(1.02); }
.captcha-img svg, .captcha-img img { display: block; }

/* ============ 登录/注册 ============ */
.auth-shell { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 40px 20px; min-width: 0; overflow-x: hidden;
  background: radial-gradient(60% 40% at 20% 10%, rgba(37,99,235,.08), transparent 60%), radial-gradient(50% 40% at 90% 90%, rgba(17,24,39,.06), transparent 60%), radial-gradient(40% 30% at 50% 50%, rgba(16,185,129,.04), transparent 60%), var(--bg); }
.auth-card { width: 100%; max-width: 440px; background: rgba(255,255,255,.85); backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px); border: 1px solid rgba(255,255,255,.9); border-radius: 20px; padding: 32px; box-shadow: 0 25px 80px -20px rgba(15,23,42,.15); animation: authCardIn .5s var(--ease-spring); }
.auth-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 16px; margin-bottom: 20px; }
.auth-title { font-size: 24px; font-weight: 600; letter-spacing: -0.02em; margin: 8px 0 6px; animation: fadeSlideUp .4s var(--ease-spring) .1s both; }
.auth-sub { color: var(--t2); font-size: 14px; margin-bottom: 22px; animation: fadeSlideUp .4s var(--ease-spring) .15s both; }
.auth-alt { margin-top: 16px; text-align: center; color: var(--t2); font-size: 13px; }
.alert { padding: 10px 14px; border-radius: var(--radius-sm); font-size: 13px; margin-bottom: 14px; border: 1px solid transparent; animation: alertIn .3s var(--ease); }
.alert-error   { background: rgba(239,68,68,.08); color: var(--danger); border-color: rgba(239,68,68,.2); }
.alert-success { background: rgba(16,185,129,.08); color: var(--success); border-color: rgba(16,185,129,.2); }
.alert-info    { background: rgba(37,99,235,.06); color: var(--brand); border-color: rgba(37,99,235,.2); }
.alert-warn    { background: rgba(245,158,11,.08); color: var(--warn); border-color: rgba(245,158,11,.2); }

/* ============ 表格 ============ */
.table-wrap { overflow-x: auto; border-radius: var(--radius); background: rgba(255,255,255,.75); backdrop-filter: saturate(180%) blur(12px); -webkit-backdrop-filter: saturate(180%) blur(12px); border: 1px solid rgba(255,255,255,.8); box-shadow: 0 8px 32px -8px rgba(15,23,42,.12), 0 2px 8px -2px rgba(15,23,42,.06); -webkit-overflow-scrolling: touch; overscroll-behavior-inline: contain; }
.table { width: 100%; border-collapse: collapse; min-width: 560px; font-size: 14px; }
.table th, .table td { padding: 14px 20px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: middle; white-space: nowrap; }
.table th { font-weight: 600; color: var(--t2); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; background: rgba(250,251,252,.8); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.table tbody tr { transition: background var(--transition-fast), transform var(--transition-fast); }
.table tbody tr:hover { background: rgba(37,99,235,.03); }
.table td.cell-content { max-width: 260px; min-width: 100px; }
.table td.cell-content > div {
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  word-break: break-all;
  line-height: 1.5;
  max-height: 3em;
}
/* 非webkit浏览器的截断兼容 */
@supports not (-webkit-line-clamp: 2) {
  .table td.cell-content > div {
    display: block;
    white-space: nowrap;
    text-overflow: ellipsis;
    max-height: none;
  }
}
.table td.actions { text-align: right; }
.table tbody tr:last-child td { border-bottom: 0; }
.empty { padding: 60px 20px; text-align: center; color: var(--t3); background: linear-gradient(135deg, rgba(248,250,252,.5) 0%, rgba(241,245,249,.5) 100%); border-radius: var(--radius); margin: 20px; }
.empty-icon { width: 44px; height: 44px; margin: 0 auto 12px; border-radius: 14px; background: var(--line); color: var(--t3); display: flex; align-items: center; justify-content: center; font-size: 20px; animation: emptyPulse 2s var(--ease) infinite; }

/* ============ Modal ============ */
.modal-mask { position: fixed; inset: 0; background: rgba(15,23,42,.28); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); z-index: 200; display: none; align-items: center; justify-content: center; padding: 20px; animation: maskIn .2s ease-out; }
.modal-mask.show { display: flex; }
.modal-card { background: rgba(255,255,255,.88); backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px); border: 1px solid rgba(255,255,255,.9); border-radius: var(--radius); padding: 24px; width: 100%; max-width: 520px; box-shadow: 0 20px 60px -15px rgba(15,23,42,.2), 0 8px 24px -8px rgba(15,23,42,.1); max-height: 90vh; overflow-y: auto; overflow-x: hidden; word-break: break-word; animation: modalIn .35s var(--ease-spring); }
.modal-card::-webkit-scrollbar { width: 6px; }
.modal-card::-webkit-scrollbar-thumb { background: rgba(148,163,184,.4); border-radius: 3px; }
.modal-title { font-size: 17px; font-weight: 600; margin: 0 0 14px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }
.perm-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.perm-item { display: flex; align-items: center; gap: 8px; padding: 9px 12px; border: 1px solid var(--line-2); border-radius: var(--radius-sm); cursor: pointer; font-size: 13px; color: var(--t2); transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast); user-select: none; }
.perm-item:hover { border-color: var(--ink); color: var(--t1); }
.perm-item input[type="checkbox"] { width: 15px; height: 15px; accent-color: var(--ink); cursor: pointer; flex-shrink: 0; }
.perm-item input[type="checkbox"]:disabled { cursor: not-allowed; opacity: .55; }
.perm-item:has(input:checked) { background: var(--line); color: var(--t1); border-color: var(--ink); }

/* ============ Toast ============ */
.toast-wrap { position: fixed; top: 20px; right: 20px; z-index: 300; display: flex; flex-direction: column; gap: 10px; }
.toast { padding: 12px 16px; border-radius: 12px; background: rgba(255,255,255,.95); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); box-shadow: 0 8px 32px -8px rgba(15,23,42,.12), 0 2px 8px -2px rgba(15,23,42,.06); border: 1px solid var(--line); font-size: 13px; color: var(--t1); min-width: 200px; max-width: 340px; animation: toastIn .3s var(--ease-spring); }
.toast.toast-out { animation: toastOut .3s var(--ease) forwards; }
.toast.success { border-color: rgba(16,185,129,.3); color: var(--success); }
.toast.error   { border-color: rgba(239,68,68,.3);  color: var(--danger); }
.toast.info    { border-color: rgba(37,99,235,.3);  color: var(--brand); }

/* ============ Admin 布局 ============ */
.admin-shell { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar { background: rgba(255,255,255,.85); backdrop-filter: saturate(180%) blur(16px); -webkit-backdrop-filter: saturate(180%) blur(16px); border-right: 1px solid rgba(255,255,255,.9); padding: 22px 16px; position: sticky; top: 0; height: 100vh; overflow-y: auto; display: flex; flex-direction: column; }
.sidebar .brand { margin: 4px 6px 22px; flex-shrink: 0; }
.sidebar nav { display: flex; flex-direction: column; gap: 4px; }
.sidebar nav a { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: var(--radius-sm); color: var(--t2); font-size: 14px; transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast); }
.sidebar nav a:hover { background: var(--line); color: var(--t1); text-decoration: none; transform: translateX(3px); }
.sidebar nav a.active { background: var(--ink); color: #fff; box-shadow: 0 4px 12px -4px rgba(17,24,39,.4); }
.nav-group { display: flex; flex-direction: column; }
.sidebar nav .nav-item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px 12px; border-radius: var(--radius-sm); border: 0; background: transparent; color: var(--t2); font-size: 14px; font-family: inherit; text-align: left; cursor: pointer; transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast); }
.sidebar nav .nav-item:hover { background: var(--line); color: var(--t1); transform: translateX(3px); }
.sidebar nav .nav-item.active { background: var(--ink); color: #fff; box-shadow: 0 4px 12px -4px rgba(17,24,39,.4); }
.sidebar nav .nav-item.nav-item-subactive { background: var(--line); color: var(--t1); font-weight: 600; }
.nav-chevron { margin-left: auto; flex-shrink: 0; opacity: .6; transition: transform var(--transition-fast); }
.nav-group.open .nav-chevron { transform: rotate(180deg); }
.nav-sub { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--transition-normal); }
.nav-group.open .nav-sub { grid-template-rows: 1fr; }
.nav-sub-inner { overflow: hidden; min-height: 0; }
.sidebar nav .nav-sub-item { display: flex; align-items: center; gap: 10px; padding: 7px 12px 7px 40px; margin: 2px 0; border-radius: var(--radius-sm); color: var(--t2); font-size: 13px; transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast); }
.sidebar nav .nav-sub-item:hover { background: var(--line); color: var(--t1); text-decoration: none; transform: translateX(3px); }
.sidebar nav .nav-sub-item.active { background: var(--ink); color: #fff; font-weight: 600; }
.nav-sub-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--t3); flex-shrink: 0; transition: background var(--transition-fast); }
.sidebar nav .nav-sub-item.active .nav-sub-dot { background: #fff; }
.sidebar nav .nav-section-title { margin: 16px 8px 4px; font-size: 11.5px; font-weight: 700; letter-spacing: .06em; color: var(--t3); }
.sidebar nav .nav-section-title::after { content:""; display:block; height:1px; margin-top:6px; background:var(--line); }
.sidebar-footer { margin-top: auto; flex-shrink: 0; font-size: 12px; color: var(--t3); padding-top: 14px; border-top: 1px solid var(--line); }
.admin-main { padding: 28px 32px 60px; min-width: 0; overflow-x: hidden; }
.admin-header { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin-bottom: 20px; }
.mobile-topbar { display: none; align-items: center; justify-content: space-between; padding: 14px 20px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.85); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 20; }
.icon-btn { width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line-2); background: #fff; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; color: var(--t1); transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast); }
.icon-btn:hover { background: var(--line); border-color: var(--ink); transform: scale(1.05); }
.icon-btn:active { transform: scale(.95); }
@media (max-width: 900px) {
  .admin-shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; left: 0; top: 0; bottom: 0; z-index: 60; transform: translateX(-100%); transition: transform var(--transition-slow); width: 260px; box-shadow: var(--shadow-hover); }
  .sidebar.open { transform: translateX(0); }
  .mobile-topbar { display: flex; }
  .admin-main { padding: 20px; }
  .sidebar-mask { position: fixed; inset: 0; background: rgba(15,23,42,.32); z-index: 55; display: none; }
  .sidebar-mask.open { display: block; animation: maskIn .2s ease-out; }
}

/* ============ Utility ============ */
.mono { font-family: var(--mono); }
.text-sub { color: var(--t3); }
.text-right { text-align: right; }
.mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-20 { margin-top: 20px; }
.mb-16 { margin-bottom: 16px; }
.flex { display: flex; } .between { justify-content: space-between; } .center { align-items: center; }
.key-box { font-family: var(--mono); padding: 14px 16px; background: #F8FAFC; border: 1px dashed var(--line-2); border-radius: var(--radius-sm); color: var(--t1); font-size: 13px; word-break: break-all; line-height: 1.6; user-select: all; transition: border-color var(--transition-fast), background var(--transition-fast); }
.key-box:hover { border-color: var(--ink); background: #F1F5F9; }
.key-box.muted { color: var(--t3); font-style: italic; user-select: none; }
.divider { height: 1px; background: var(--line); margin: 16px 0; border: 0; }

/* 手机适配 */
@media (max-width: 640px) {
  body { font-size: 14px; }
  .header-inner { padding: 12px 16px; }
  .main { padding: 20px 16px 60px; }
  .grid { gap: 14px; }
  .card { padding: 18px; border-radius: 14px; }
  .auth-card { padding: 24px; }
  .btn { height: 44px; border-radius: 12px; }
  .btn-group .btn { flex: 1; }
  .header-nav a, .user-chip { padding: 6px 10px; font-size: 13px; }
  .brand span.brand-text { display: none; }
  .page-title { font-size: 20px; }
  .stat-value { font-size: 22px; }
  .input, .select { height: 44px; border-radius: 12px; }
  .textarea, textarea.input { height: auto; min-height: 110px; }
  .captcha-row { flex-wrap: wrap; }
  .captcha-img { flex: 0 0 120px; }
  .table th, .table td { padding: 12px 16px; }
  .admin-main { padding: 16px; }
  .admin-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .admin-header .btn-group { width: 100%; }
  .admin-header .btn-group .btn { flex: 1; }
  .modal-card { padding: 20px; border-radius: 16px; margin: 12px; }
  /* --- 筛选表单移动端优化 --- */
  .admin-header form,
  form.card[style*="flex"],
  form.flex { width: 100%; flex-wrap: wrap; }
  .admin-header form .input,
  .admin-header form input[type="text"],
  form[style*="flex"] .input,
  form[style*="flex"] .select,
  form.card .input,
  form.card .select,
  form.flex .input,
  form.flex .select,
  form .form-row[style*="min-width"] .input,
  form .form-row[style*="min-width"] .select { width: 100% !important; max-width: 100% !important; min-width: 0 !important; }
  form.flex .form-row,
  form[style*="flex"] .form-row,
  form .form-row[style*="min-width"] { width: 100%; min-width: 0 !important; }
  .admin-header form .btn,
  form.card .btn,
  form.flex .btn { flex: 1 1 auto; }
  /* --- 分页、弹窗按钮 --- */
  .flex[style*="justify-content:center"] { flex-wrap: wrap; }
  .modal-actions { flex-wrap: wrap; }
  .modal-actions .btn { flex: 1 1 auto; }
  /* --- 提示与信息 --- */
  .toast-wrap { left: 12px; right: 12px; top: 12px; align-items: stretch; }
  .toast { min-width: 0; width: 100%; max-width: 100%; }
  .key-box { font-size: 12px; padding: 12px; }
  .info-row { align-items: flex-start; }
  .info-key { flex: 0 0 auto; }
  .table-wrap { border-radius: 12px; }
  .card-title { flex-wrap: wrap; gap: 6px; }
  /* 卡片标题内的内联 flex 按钮组：移动端强制换行，避免撑宽整个页面 */
  .card-title > div[style*="display:flex"],
  .card-title > div[style*="display: flex"] { flex-wrap: wrap; min-width: 0; }
  .card-title > div[style*="display:flex"] .btn,
  .card-title > div[style*="display: flex"] .btn { min-width: 0; }
  /* --- 表单组通栏与验证码行 --- */
  form .form-group,
  form [class*="grid"] .form-group { width: 100%; min-width: 0 !important; }
  .verify-row { flex-wrap: wrap; width: 100%; }
  .verify-row .input { flex: 1 1 100%; }
  .verify-btn { min-width: 100%; height: 44px; }
  .attachment-upload { width: 100%; }
  .attachment-trigger { flex: 1 1 auto; }
}

/* 超小屏优化 */
@media (max-width: 420px) {
  .perm-grid { grid-template-columns: 1fr; }
  .stat { padding: 18px; }
  .btn { padding: 0 12px; }
  .admin-header .btn-group .btn,
  .admin-header form .btn { padding: 0 10px; }
}

/* ============ 响应式导航栏（汉堡菜单） ============ */
@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .header-inner { position: relative; }
  .header-nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 16px;
    left: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: 0 16px 40px -12px rgba(15,23,42,.22);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity .18s var(--ease), transform .18s var(--ease), visibility .18s;
    z-index: 40;
    max-height: calc(100vh - 96px);
    overflow-y: auto;
  }
  .header-nav.open { opacity: 1; visibility: visible; transform: translateY(0); }
  .header-right { gap: 10px; }
  .header-nav a { padding: 10px 12px; border-radius: 10px; font-size: 14px; }
  .user-chip { padding: 6px 10px; font-size: 13px; max-width: 150px; }
  .header-nav .logout { text-align: left; }
}

/* ============ 自定义下拉框（毛玻璃风格） ============ */
.custom-select {
  position: relative;
  width: 100%;
  user-select: none;
}
.custom-select.open {
  z-index: 1000;
}
/* 下拉框打开时，仅把其所在面板/卡片/表格容器提升到「同层其他卡片之上」，
   而不是整个页面最上层（此前 z-index:1001 会盖住顶栏/侧栏/弹窗/提示）。
   数值需低于顶栏(30)/侧栏(60)/弹窗(200)/提示(300)。 */
.card:has(.custom-select.open),
.stat:has(.custom-select.open),
.table-wrap:has(.custom-select.open),
.tkx-qpanel:has(.custom-select.open) {
  position: relative;
  z-index: 10;
}
.custom-select-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 42px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  color: var(--t1);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
.custom-select-trigger:hover {
  border-color: #CBD5E1;
  background: rgba(255, 255, 255, 0.85);
}
.custom-select.open .custom-select-trigger {
  border-color: var(--ink);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
  background: rgba(255, 255, 255, 0.92);
}
.custom-select-trigger .arrow {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-normal);
  color: var(--t3);
  flex-shrink: 0;
  margin-left: 8px;
}
.custom-select.open .custom-select-trigger .arrow {
  transform: rotate(180deg);
}
.custom-select-options {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 100;
  max-height: 240px;
  overflow-y: auto;
  padding: 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  box-shadow: 0 12px 40px -8px rgba(15, 23, 42, .18), 0 4px 12px -2px rgba(15, 23, 42, .08);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px) scale(0.98);
  transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
}
.custom-select.open .custom-select-options {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.custom-select-option {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--t1);
  cursor: pointer;
  transition: background .12s var(--ease), transform .12s var(--ease);
  animation: optionSlideIn .2s var(--ease) both;
}
.custom-select-option:hover {
  background: rgba(37, 99, 235, 0.06);
  transform: translateX(2px);
}
.custom-select-option.selected {
  background: rgba(37, 99, 235, 0.1);
  color: var(--brand);
  font-weight: 500;
}
.custom-select-option.selected::after {
  content: "\2713";
  margin-left: auto;
  font-size: 12px;
}
/* 自定义下拉框滚动条 */
.custom-select-options::-webkit-scrollbar { width: 6px; }
.custom-select-options::-webkit-scrollbar-track { background: transparent; }
.custom-select-options::-webkit-scrollbar-thumb { background: rgba(148,163,184,.4); border-radius: 3px; }
.custom-select-options::-webkit-scrollbar-thumb:hover { background: rgba(148,163,184,.6); }

/* ============ 用户搜索多选 ============ */
.user-multi-select { position: relative; }
.ums-field { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; min-height: 42px; padding: 6px 34px 6px 14px; border-radius: var(--radius-sm); border: 1px solid var(--line-2); background: rgba(255,255,255,.7); cursor: text; transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast); position: relative; }
.ums-field:hover { border-color: var(--line-2); }
.ums-field:focus-within { outline: none; border-color: var(--ink); background: rgba(255,255,255,.92); box-shadow: 0 0 0 4px rgba(37,99,235,.1); }
.ums-placeholder { color: var(--t3); font-size: 14px; line-height: 1.6; pointer-events: none; }
.ums-caret { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); display: flex; align-items: center; color: var(--t3); transition: transform var(--transition-fast); }
.user-multi-select.open .ums-caret { transform: translateY(-50%) rotate(180deg); }
.ums-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.ums-tag { display: inline-flex; align-items: center; gap: 6px; padding: 3px 8px 3px 10px; border-radius: 999px; background: rgba(37,99,235,.1); color: var(--brand); font-size: 12px; line-height: 1.6; }
.ums-tag-x { cursor: pointer; font-weight: 700; color: var(--brand); opacity: .7; transition: opacity var(--transition-fast); }
.ums-tag-x:hover { opacity: 1; }
.ums-dropdown { display: none; position: absolute; top: 100%; left: 0; right: 0; z-index: 30; margin-top: 6px; background: #fff; border: 1px solid var(--line-2); border-radius: var(--radius-sm); box-shadow: 0 12px 32px -8px rgba(15,23,42,.18); overflow: hidden; }
.user-multi-select.open .ums-dropdown { display: block; animation: modalIn .18s var(--ease-spring); }
.ums-search { padding: 10px; border-bottom: 1px solid var(--line); }
.ums-list { max-height: 240px; overflow-y: auto; }
.ums-item { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 9px 14px; cursor: pointer; transition: background var(--transition-fast); }
.ums-item:hover { background: var(--line); }
.ums-item + .ums-item { border-top: 1px solid var(--line); }
.ums-item-main { display: flex; align-items: center; gap: 10px; min-width: 0; }
.ums-item-avatar { flex-shrink: 0; width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, rgba(37,99,235,.12), rgba(17,24,39,.08)); color: var(--brand); font-size: 13px; font-weight: 600; }
.ums-item-info { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.ums-item-name { font-weight: 600; font-size: 13px; color: var(--t1); }
.ums-item-sub { font-size: 12px; color: var(--t3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 220px; }
.ums-item-add { flex-shrink: 0; width: 22px; height: 22px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: var(--line); color: var(--t2); font-size: 15px; transition: all var(--transition-fast); }
.ums-item:hover .ums-item-add { background: rgba(37,99,235,.15); color: var(--brand); }
.ums-empty { padding: 18px; text-align: center; color: var(--t3); font-size: 13px; }

/* ============ 到期时间选择器 ============ */
.expire-picker { position: relative; }
.expire-pop {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  z-index: 80;
  width: 280px;
  background: #fff;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  box-shadow: 0 20px 50px -12px rgba(15,23,42,.28);
  padding: 12px;
  display: none;
  animation: modalIn .25s var(--ease-spring);
}
.expire-pop.show { display: block; }
.ep-nav { display: flex; align-items: center; gap: 6px; margin-bottom: 8px; }
.ep-nav-btn {
  width: 28px; height: 28px; flex-shrink: 0;
  border: 1px solid var(--line-2); background: #fff; border-radius: 8px;
  cursor: pointer; color: var(--t2); font-size: 13px; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.ep-nav-btn:hover { background: var(--line); color: var(--t1); }
.ep-title { flex: 1; text-align: center; font-size: 14px; font-weight: 600; color: var(--t1); }
.ep-week { display: grid; grid-template-columns: repeat(7, 1fr); text-align: center; margin-bottom: 4px; }
.ep-week span { font-size: 11px; color: var(--t3); padding: 4px 0; }
.ep-days { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; margin-bottom: 8px; }
.ep-day {
  height: 32px; display: flex; align-items: center; justify-content: center;
  font-size: 13px; border-radius: 8px; cursor: pointer; color: var(--t2);
  border: 1px solid transparent; transition: background var(--transition-fast), color var(--transition-fast);
}
.ep-day:hover { background: var(--line); }
.ep-day.other { color: var(--t3); opacity: .45; }
.ep-day.selected { background: var(--ink); color: #fff; font-weight: 600; }
.ep-day.today { border-color: var(--ink); }
.ep-time { display: flex; align-items: center; gap: 6px; margin-bottom: 8px; }
.ep-time .ep-hm { flex: 1; height: 34px; padding: 0 8px; font-size: 13px; border: 1px solid var(--line-2); border-radius: var(--radius-sm); background: #fff; color: var(--t1); font-family: inherit; }
.ep-time span { color: var(--t3); font-size: 13px; }
.ep-perm {
  display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--t1);
  cursor: pointer; padding: 8px 0; border-top: 1px solid var(--line); margin-bottom: 8px;
}
.ep-perm input { cursor: pointer; }
.ep-actions { display: flex; gap: 8px; justify-content: flex-end; }
.ep-actions .btn { flex: 0 0 auto; }
.expire-pop.is-perm .ep-nav,
.expire-pop.is-perm .ep-week,
.expire-pop.is-perm .ep-days,
.expire-pop.is-perm .ep-time { opacity: .45; pointer-events: none; }

/* ============ 全局背景渐变 ============ */
body {
  background: 
    radial-gradient(ellipse at top left, rgba(37, 99, 235, 0.05), transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(17, 24, 39, 0.04), transparent 50%),
    var(--bg);
  background-attachment: fixed;
}

/* ============ 滚动条美化 ============ */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: rgba(0, 0, 0, 0.02); border-radius: 4px; }
::-webkit-scrollbar-thumb { background: rgba(15, 23, 42, 0.15); border-radius: 4px; transition: background .2s ease; }
::-webkit-scrollbar-thumb:hover { background: rgba(15, 23, 42, 0.25); }

/* ============ 选中文本样式 ============ */
::selection { background: rgba(37, 99, 235, 0.2); color: var(--t1); }

/* ============ 键盘焦点样式 ============ */
.btn:focus-visible,
.input:focus-visible,
.select:focus-visible,
.textarea:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* ============ 分页按钮 ============ */
.pagination .btn { min-width: 36px; padding: 0 10px; }
.pagination .btn.active { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ============ 消息中心样式 ============ */
.message-item {
  padding: 16px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.6);
  margin-bottom: 10px;
  border: 1px solid var(--line);
  transition: background var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  cursor: pointer;
  overflow: hidden;
}
.message-item:hover {
  background: rgba(255, 255, 255, 0.92);
  transform: translateX(4px);
  border-color: rgba(37,99,235,.2);
  box-shadow: 0 4px 16px -4px rgba(15,23,42,.08);
}
.message-item.unread {
  background: rgba(37, 99, 235, 0.05);
  border-color: rgba(37, 99, 235, 0.2);
}
.message-title { font-weight: 600; color: var(--t1); margin-bottom: 6px; font-size: 14px; }
.message-time { font-size: 12px; color: var(--t3); margin-top: 8px; }
.message-preview { color: var(--t2); font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; }

/* ============ 公告弹窗 ============ */
.announcement-modal .modal-card { max-width: 600px; max-height: 85vh; overflow-y: auto; }
.announcement-modal .modal-card::-webkit-scrollbar { width: 6px; }
.announcement-modal .modal-card::-webkit-scrollbar-thumb { background: rgba(148,163,184,.4); border-radius: 3px; }
.announcement-content { line-height: 1.8; color: var(--t2); font-size: 14px; white-space: normal; word-wrap: break-word; overflow-wrap: break-word; }
.announcement-content h1, .announcement-content h2, .announcement-content h3 { color: var(--t1); margin-top: 20px; margin-bottom: 10px; }
.announcement-content p { margin-bottom: 12px; }
.announcement-content ul, .announcement-content ol { margin-bottom: 12px; padding-left: 20px; }

/* ============ 倒计时按钮 ============ */
.btn-countdown { position: relative; min-width: 100px; }
.btn-countdown:disabled { opacity: 0.7; cursor: not-allowed; }

/* ============ 通讯中心菜单图标 ============ */
.nav-icon { width: 18px; height: 18px; flex-shrink: 0; }

/* ============ 邮件模板编辑器 ============ */
.template-editor { border: 1px solid var(--line-2); border-radius: var(--radius-sm); overflow: hidden; }
.template-editor .toolbar { padding: 8px 12px; background: var(--line); border-bottom: 1px solid var(--line-2); display: flex; gap: 8px; flex-wrap: wrap; }
.template-editor .toolbar button { padding: 4px 10px; border-radius: 6px; border: 1px solid var(--line-2); background: #fff; font-size: 12px; cursor: pointer; color: var(--t2); }
.template-editor .toolbar button:hover { background: var(--line); color: var(--t1); }
.template-editor textarea { border: none; border-radius: 0; min-height: 200px; }

/* ============ 变量提示 ============ */
.variable-hint { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.variable-tag { display: inline-flex; align-items: center; padding: 2px 8px; border-radius: 6px; background: rgba(37, 99, 235, 0.08); color: var(--brand); font-size: 12px; font-family: var(--mono); cursor: pointer; transition: background var(--transition-fast), transform var(--transition-fast); }
.variable-tag:hover { background: rgba(37, 99, 235, 0.15); transform: translateY(-1px); }

/* ============ 邮件队列状态 ============ */
.queue-status { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; }
.queue-status.pending { color: var(--warn); }
.queue-status.sent { color: var(--success); }
.queue-status.failed { color: var(--danger); }

/* ============ 统计卡片图标 ============ */
.stat-icon { width: 40px; height: 40px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 12px; }
.stat-icon.primary { background: rgba(37, 99, 235, 0.1); color: var(--brand); }
.stat-icon.success { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.stat-icon.warning { background: rgba(245, 158, 11, 0.1); color: var(--warn); }
.stat-icon.danger { background: rgba(239, 68, 68, 0.1); color: var(--danger); }

/* ============ 注册页面专用样式 ============ */
.register-shell { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 40px 20px; min-width: 0; overflow-x: hidden;
  background: radial-gradient(60% 40% at 20% 10%, rgba(37,99,235,.08), transparent 60%), radial-gradient(50% 40% at 90% 90%, rgba(17,24,39,.06), transparent 60%), radial-gradient(40% 30% at 50% 50%, rgba(16,185,129,.04), transparent 60%), var(--bg); }
.register-card { width: 100%; max-width: 520px; background: rgba(255,255,255,.88); backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px); border: 1px solid rgba(255,255,255,.9); border-radius: 20px; padding: 36px 32px; box-shadow: 0 25px 80px -20px rgba(15,23,42,.15); animation: authCardIn .5s var(--ease-spring); }
.register-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 16px; margin-bottom: 24px; }
.register-title { font-size: 26px; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 8px; animation: fadeSlideUp .4s var(--ease-spring) .1s both; }
.register-sub { color: var(--t2); font-size: 14px; margin-bottom: 28px; animation: fadeSlideUp .4s var(--ease-spring) .15s both; }
.step-indicator { display: flex; gap: 8px; margin-bottom: 24px; }
.step-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--line-2); transition: all .3s var(--ease-spring); }
.step-dot.active { background: var(--ink); width: 24px; border-radius: 4px; }
.form-section { margin-bottom: 20px; animation: fadeSlideUp .4s var(--ease-spring) both; }
.form-section-title { font-size: 13px; font-weight: 600; color: var(--t2); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.verify-row { display: flex; gap: 10px; align-items: flex-end; }
.verify-row .input { flex: 1; }
.verify-btn { height: 42px; padding: 0 16px; border-radius: var(--radius-sm); border: 1px solid var(--line-2); background: rgba(255,255,255,.8); color: var(--t1); font-size: 13px; font-weight: 500; cursor: pointer; white-space: nowrap; transition: all var(--transition-fast); flex-shrink: 0; }
.verify-btn:hover:not(:disabled) { background: rgba(255,255,255,.95); border-color: #CBD5E1; transform: translateY(-1px); }
.verify-btn:disabled { opacity: .55; cursor: not-allowed; }
.pwd-strength { display: flex; gap: 4px; margin-top: 6px; }
.pwd-bar { height: 3px; flex: 1; border-radius: 2px; background: var(--line); transition: background .3s var(--ease); }
.pwd-bar.weak { background: var(--danger); }
.pwd-bar.medium { background: var(--warn); }
.pwd-bar.strong { background: var(--success); }
.pwd-hint { font-size: 12px; color: var(--t3); margin-top: 4px; }
.register-alt { margin-top: 20px; text-align: center; color: var(--t2); font-size: 13px; }

/* ============ 动画关键帧 ============ */
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(16px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes maskIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes toastIn {
  from { opacity: 0; transform: translateX(40px) scale(0.95); }
  to { opacity: 1; transform: translateX(0) scale(1); }
}
@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(40px); }
}
@keyframes authCardIn {
  from { opacity: 0; transform: translateY(24px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes alertIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes optionSlideIn {
  from { opacity: 0; transform: translateX(-8px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes emptyPulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* ============ 滚动渐显动画 ============ */
.reveal {
  /* 关闭 opacity 渐显；保留 transform 位移，作为「滑入到位」的轻微入场（不影响可见性） */
  transform: translateY(0);
}
.reveal.revealed {
  transform: translateY(0);
}

/* ============ 列表交错动画 ============ */
.stagger-in {
  animation: fadeSlideUp .4s var(--ease-spring) both;
}

/* ============ 响应式优化 - 平板 ============ */
@media (min-width: 641px) and (max-width: 1024px) {
  .grid-4, .grid-5 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ============ 回复弹窗内容区 ============ */
.reply-original { background: #eff6ff; border: 1px solid #bfdbfe; border-left: 4px solid #3b82f6; padding: 14px 16px; border-radius: 6px; font-size: 14px; color: var(--t1); line-height: 1.7; word-break: break-all; overflow-wrap: break-word; max-height: 150px; overflow-y: auto; }
.reply-content { background: #f0fdf4; border: 1px solid #bbf7d0; padding: 12px; border-radius: 6px; font-size: 14px; line-height: 1.8; min-height: 40px; max-height: 300px; overflow-y: auto; word-break: break-word; }
.reply-content::-webkit-scrollbar, .reply-original::-webkit-scrollbar { width: 6px; }
.reply-content::-webkit-scrollbar-thumb, .reply-original::-webkit-scrollbar-thumb { background: rgba(148,163,184,.4); border-radius: 3px; }

/* ============ 动画通用 ============ */
* { -webkit-tap-highlight-color: transparent; }

/* ============ 反馈附件上传 ============ */
.attachment-upload { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 4px; margin-bottom: 12px; }
.attachment-trigger {
  display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px;
  border-radius: var(--radius-sm); border: 1px dashed var(--line-2);
  background: rgba(255,255,255,.6); color: var(--t2); font-size: 13px; cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
}
.attachment-trigger:hover { border-color: var(--brand); color: var(--brand); background: rgba(37,99,235,.04); }
.attachment-hint { color: var(--t3); font-size: 12px; }

.attachment-preview { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; margin: 8px 0 16px; }
.att-preview-item { position: relative; border: 1px solid var(--line-2); border-radius: var(--radius-sm); overflow: hidden; background: #fff; }
.att-preview-item .att-img { width: 100%; height: 110px; object-fit: cover; display: block; background: #f1f5f9; }
.att-video-placeholder { width: 100%; height: 110px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; background: linear-gradient(135deg,#111827,#334155); color: #fff; font-size: 12px; }
.att-preview-item .att-name { padding: 6px 10px; font-size: 12px; color: var(--t2); line-height: 1.4; word-break: break-all; }
.att-preview-item .att-name small { color: var(--t3); }
.att-remove {
  position: absolute; top: 6px; right: 6px; width: 22px; height: 22px; border: none; border-radius: 50%;
  background: rgba(15,23,42,.65); color: #fff; font-size: 16px; line-height: 1; cursor: pointer;
  display: flex; align-items: center; justify-content: center; transition: background var(--transition-fast);
}
.att-remove:hover { background: var(--danger); }

/* ============ 附件展示（历史反馈） ============ */
.attachments { display: flex; flex-wrap: wrap; gap: 10px; margin: 8px 0; }
.att-item { border: 1px solid var(--line-2); border-radius: var(--radius-sm); overflow: hidden; background: #fff; width: 220px; max-width: 100%; min-width: 0; }
.att-item .att-img { width: 100%; max-width: 100%; height: auto; display: block; cursor: zoom-in; background: #f1f5f9; }
.att-item .att-video { width: 100%; max-width: 100%; height: auto; display: block; background: #000; }

/* ============ 滑块验证 ============ */
.slider-modal { max-width: 380px; padding: 20px; }
.slider-modal .modal-title { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 0 0 16px; }
.slider-modal-title { display: flex; align-items: center; gap: 9px; font-size: 15px; font-weight: 600; color: var(--t1); }
.slider-modal-icon { width: 30px; height: 30px; border-radius: 9px; background: linear-gradient(135deg, #2563EB, #7C3AED); color: #fff; display: flex; align-items: center; justify-content: center; flex-shrink: 0; box-shadow: 0 4px 12px -4px rgba(37,99,235,.5); }
.slider-modal-actions { display: flex; gap: 6px; }
.slider-icon-btn { width: 32px; height: 32px; border-radius: 9px; border: 1px solid var(--line-2); background: #fff; color: var(--t2); display: inline-flex; align-items: center; justify-content: center; cursor: pointer; transition: all var(--transition-fast); }
.slider-icon-btn:hover { border-color: var(--ink); color: var(--t1); background: var(--line); transform: scale(1.05); }
.slider-icon-btn:active { transform: scale(.94); }
.slider-captcha { display: flex; flex-direction: column; gap: 14px; }
.slider-canvas { position: relative; width: 100%; aspect-ratio: 300 / 160; border-radius: 12px; overflow: hidden; background: #eef1f5; user-select: none; -webkit-user-select: none; touch-action: none; box-shadow: inset 0 0 0 1px rgba(15,23,42,.06); }
.slider-canvas img.slider-bg { display: block; width: 100%; height: 100%; -webkit-user-drag: none; pointer-events: none; }
.slider-loading { position: absolute; inset: 0; z-index: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; background: #eef1f5; color: var(--t3); font-size: 12px; letter-spacing: .02em; transition: opacity .25s var(--ease); }
.slider-loading.hidden { opacity: 0; pointer-events: none; }
.slider-spinner { width: 26px; height: 26px; border-radius: 50%; border: 3px solid rgba(37,99,235,.15); border-top-color: var(--brand); animation: sliderSpin .7s linear infinite; }
@keyframes sliderSpin { to { transform: rotate(360deg); } }
.slider-canvas img.slider-piece { position: absolute; top: 0; left: 0; display: block; -webkit-user-drag: none; pointer-events: none; filter: drop-shadow(0 2px 5px rgba(15,23,42,.35)); }
.slider-canvas.slider-error { animation: sliderShake .4s var(--ease); }
@keyframes sliderShake { 0%,100%{transform:translateX(0)} 20%{transform:translateX(-6px)} 40%{transform:translateX(6px)} 60%{transform:translateX(-4px)} 80%{transform:translateX(4px)} }
.slider-bar { position: relative; width: 100%; height: 46px; background: #eef1f5; border-radius: 23px; border: 1px solid var(--line-2); overflow: hidden; user-select: none; -webkit-user-select: none; touch-action: none; }
.slider-fill { position: absolute; left: 0; top: 0; bottom: 0; width: 0; background: linear-gradient(90deg, rgba(37,99,235,.10), rgba(37,99,235,.24)); border-radius: 23px 0 0 23px; }
.slider-track-text { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--t3); font-size: 13px; pointer-events: none; transition: opacity .2s; }
.slider-thumb { position: absolute; left: 0; top: -1px; width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(135deg, #fff, #F1F5F9); border: 1px solid var(--line-2); box-shadow: 0 2px 8px rgba(15,23,42,.16), inset 0 1px 0 rgba(255,255,255,.8); display: flex; align-items: center; justify-content: center; cursor: grab; color: var(--t2); touch-action: none; }
.slider-thumb:hover { color: var(--brand); }
.slider-thumb:active { cursor: grabbing; }
.slider-tip { text-align: center; color: var(--t3); font-size: 12px; min-height: 18px; }
@media (max-width: 420px) {
  .slider-modal { padding: 16px; max-width: 100%; margin: 10px; }
  .slider-thumb { width: 46px; height: 46px; }
}

/* 美化文件选择器（导入器版本更新） */
.file-picker { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.file-picker .file-picker-name {
  flex: 1 1 240px;
  min-width: 0;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--line-2);
  background: rgba(255,255,255,.55);
  color: var(--t3);
  font-size: 13px;
  line-height: 20px;
  word-break: break-all;
}
.file-picker .file-picker-name.has-file { color: var(--t1); border-style: solid; background: rgba(37,99,235,.06); }
.file-picker .file-picker-icon { flex-shrink: 0; display: inline-flex; }