:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --text: #172033;
  --muted: #6c7890;
  --line: #e6eaf1;
  --primary: #4f67ff;
  --primary-strong: #3f55ed;
  --primary-soft: #eef1ff;
  --danger: #e54d5d;
  --danger-soft: #fff0f2;
  --success: #1a9b66;
  --warning: #b7791f;
  --shadow: 0 12px 35px rgba(34, 52, 86, 0.08);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
}
button, input, textarea, select { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
.hidden { display: none !important; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 24px;
  border-bottom: 1px solid rgba(230, 234, 241, .92);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; }
.brand-mark {
  display: grid; place-items: center;
  width: 38px; height: 38px;
  border-radius: 12px;
  color: white;
  background: linear-gradient(145deg, #6677ff, #4754e8);
  box-shadow: 0 8px 18px rgba(79,103,255,.25);
}
.brand-title { font-size: 18px; }
.userbar { display: flex; align-items: center; gap: 10px; }
.user-chip {
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--muted);
  font-size: 14px;
}

.page { width: min(1180px, calc(100% - 32px)); margin: 26px auto 60px; }
.page-head { display:flex; justify-content:space-between; align-items:flex-end; gap:16px; margin-bottom:18px; }
.page-title { margin:0; font-size:28px; letter-spacing:-.5px; }
.page-subtitle { margin:6px 0 0; color:var(--muted); font-size:14px; }

.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:7px;
  min-height:40px; padding:9px 14px;
  border:1px solid var(--line); border-radius:12px;
  background:#fff; color:var(--text);
  cursor:pointer; font-weight:650;
  transition:transform .12s ease, border-color .12s ease, background .12s ease;
}
.btn:hover { border-color:#ccd3e2; }
.btn:active { transform:scale(.98); }
.btn-primary { border-color:var(--primary); background:var(--primary); color:#fff; }
.btn-primary:hover { border-color:var(--primary-strong); background:var(--primary-strong); }
.btn-danger { border-color:#ffd2d8; background:var(--danger-soft); color:var(--danger); }
.btn-soft { border-color:transparent; background:var(--primary-soft); color:var(--primary-strong); }
.btn-ghost { border-color:transparent; background:transparent; }
.btn-sm { min-height:34px; padding:6px 10px; border-radius:10px; font-size:13px; }
.btn-icon { width:40px; padding:0; }
.btn:disabled { opacity:.55; cursor:not-allowed; }

.stats { display:grid; grid-template-columns:repeat(2, minmax(0, 1fr)); gap:12px; margin-bottom:16px; }
.stat-card { background:var(--panel); border:1px solid var(--line); border-radius:16px; padding:16px 18px; box-shadow:var(--shadow); }
.stat-label { color:var(--muted); font-size:13px; }
.stat-value { margin-top:5px; font-size:26px; font-weight:800; }

.toolbar {
  display:flex; flex-wrap:wrap; align-items:center; gap:10px;
  padding:12px; margin-bottom:16px;
  border:1px solid var(--line); border-radius:16px;
  background:var(--panel); box-shadow:var(--shadow);
}
.search-wrap { position:relative; flex:1 1 260px; }
.search-wrap input { padding-left:38px; }
.search-icon { position:absolute; left:13px; top:50%; transform:translateY(-50%); color:#95a0b5; pointer-events:none; }
.input, .select, .textarea {
  width:100%; border:1px solid #dfe4ed; border-radius:12px; outline:none; background:#fff; color:var(--text);
  transition:border-color .12s, box-shadow .12s;
}
.input, .select { min-height:42px; padding:9px 12px; }
.textarea { min-height:210px; resize:vertical; padding:12px; line-height:1.7; }
.input:focus, .select:focus, .textarea:focus { border-color:#8c9bff; box-shadow:0 0 0 3px rgba(79,103,255,.1); }

.copy-grid { display:grid; gap:14px; }
.copy-card {
  border:1px solid var(--line); border-radius:var(--radius); background:var(--panel); box-shadow:var(--shadow); overflow:hidden;
}
.copy-card-head { display:flex; justify-content:space-between; gap:14px; padding:17px 18px 0; }
.copy-title { margin:0; font-size:17px; font-weight:780; word-break:break-word; }
.copy-meta { display:flex; gap:10px; flex-wrap:wrap; color:var(--muted); font-size:12px; margin-top:7px; }
.usage-pill { display:inline-flex; align-items:center; gap:5px; white-space:nowrap; color:#55617a; background:#f2f4f8; border-radius:999px; padding:6px 9px; font-size:12px; font-weight:700; }
.copy-content {
  margin:14px 18px 4px; padding:14px;
  border-radius:13px; background:#fafbfe; color:#263047;
  white-space:pre-wrap; word-break:break-word; line-height:1.68; font-size:15px;
}
.copy-actions { display:flex; flex-wrap:wrap; gap:8px; padding:14px 18px 17px; }
.copy-actions .copy-main { flex:1 1 130px; }

.media-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(160px,1fr)); gap:9px; margin:12px 18px 0; }
.media-item { position:relative; min-width:0; overflow:hidden; border:1px solid var(--line); border-radius:13px; background:#f2f4f8; }
.media-item img, .media-item video { display:block; width:100%; aspect-ratio:16/10; object-fit:cover; background:#eef1f6; }
.media-toolbar { display:flex; align-items:center; justify-content:space-between; gap:7px; padding:8px; background:#fff; }
.media-name { min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; color:var(--muted); font-size:11px; }

.pagination { display:flex; justify-content:center; align-items:center; gap:8px; margin-top:18px; }
.page-info { min-width:100px; text-align:center; color:var(--muted); font-size:13px; }
.empty {
  padding:44px 20px; text-align:center; color:var(--muted); border:1px dashed #cfd6e4; border-radius:18px; background:rgba(255,255,255,.6);
}
.empty-icon { font-size:34px; margin-bottom:8px; }

.modal-backdrop {
  position:fixed; inset:0; z-index:80;
  display:flex; align-items:center; justify-content:center; padding:20px;
  background:rgba(16,24,40,.45); backdrop-filter:blur(3px);
}
.modal {
  width:min(680px,100%); max-height:min(90vh,850px); overflow:auto;
  background:#fff; border-radius:20px; box-shadow:0 24px 70px rgba(15,23,42,.25);
}
.modal-head { position:sticky; top:0; z-index:2; display:flex; align-items:center; justify-content:space-between; gap:12px; padding:17px 18px; border-bottom:1px solid var(--line); background:#fff; }
.modal-title { margin:0; font-size:18px; }
.modal-body { padding:18px; }
.modal-foot { position:sticky; bottom:0; display:flex; justify-content:flex-end; gap:9px; padding:14px 18px; border-top:1px solid var(--line); background:#fff; }
.field { margin-bottom:15px; }
.field label { display:block; margin-bottom:7px; font-size:13px; font-weight:750; }
.field-hint { margin-top:6px; color:var(--muted); font-size:12px; }
.emoji-row { display:flex; flex-wrap:wrap; gap:6px; margin-top:8px; }
.emoji-btn { width:34px; height:34px; border:1px solid var(--line); border-radius:9px; background:#fff; cursor:pointer; }
.upload-box { border:1px dashed #c8d0df; border-radius:13px; padding:13px; background:#fafbfe; }
.upload-box input { width:100%; }
.existing-media { display:grid; grid-template-columns:repeat(auto-fill,minmax(135px,1fr)); gap:8px; margin-top:10px; }
.existing-media .media-item img, .existing-media .media-item video { aspect-ratio:4/3; }

.toast-stack { position:fixed; right:18px; bottom:18px; z-index:120; display:grid; gap:8px; width:min(360px,calc(100vw - 36px)); }
.toast { padding:12px 14px; border:1px solid var(--line); border-radius:13px; background:#fff; box-shadow:0 14px 40px rgba(15,23,42,.16); font-size:14px; }
.toast.error { border-color:#ffd2d8; color:#b42335; }
.toast.success { border-color:#cbeedc; color:#16794f; }

.login-page { min-height:100vh; display:grid; place-items:center; padding:22px; background:radial-gradient(circle at 15% 10%, #ebeeff 0, transparent 32%), radial-gradient(circle at 90% 90%, #e9f9f1 0, transparent 28%), var(--bg); }
.login-card { width:min(430px,100%); padding:28px; border:1px solid var(--line); border-radius:24px; background:rgba(255,255,255,.94); box-shadow:0 24px 70px rgba(42,55,90,.12); }
.login-logo { width:54px; height:54px; display:grid; place-items:center; border-radius:16px; background:linear-gradient(145deg,#6677ff,#4754e8); color:#fff; font-size:23px; margin-bottom:18px; }
.login-title { margin:0; font-size:26px; }
.login-sub { color:var(--muted); margin:7px 0 22px; line-height:1.6; font-size:14px; }
.login-error { margin:10px 0 0; color:var(--danger); font-size:13px; min-height:20px; }

.admin-tabs { display:flex; gap:8px; margin-bottom:16px; }
.tab-btn { border:1px solid var(--line); background:#fff; border-radius:12px; padding:9px 13px; font-weight:700; cursor:pointer; }
.tab-btn.active { border-color:var(--primary); background:var(--primary-soft); color:var(--primary-strong); }
.admin-panel { border:1px solid var(--line); border-radius:18px; background:#fff; box-shadow:var(--shadow); overflow:hidden; }
.admin-panel-head { display:flex; flex-wrap:wrap; justify-content:space-between; align-items:center; gap:10px; padding:15px; border-bottom:1px solid var(--line); }
.table-wrap { overflow:auto; }
table { width:100%; border-collapse:collapse; min-width:860px; }
th, td { padding:12px 13px; border-bottom:1px solid var(--line); text-align:left; vertical-align:top; font-size:13px; }
th { background:#fafbfe; color:#58657d; font-weight:750; white-space:nowrap; }
td .cell-content { max-width:420px; max-height:92px; overflow:hidden; white-space:pre-wrap; word-break:break-word; line-height:1.55; color:#39445a; }
.checkbox { width:18px; height:18px; }
.user-form { display:grid; grid-template-columns:1fr 1fr auto; gap:10px; padding:15px; border-bottom:1px solid var(--line); }
.tag { display:inline-flex; padding:4px 8px; border-radius:999px; background:#f1f3f7; color:#5c667a; font-size:11px; font-weight:700; }
.tag-admin { background:#fff4db; color:#8a5c00; }
.media-count { color:var(--muted); font-size:12px; }

.mobile-copy-list { display:none; }
.admin-mobile-card { padding:14px; border-bottom:1px solid var(--line); }
.admin-mobile-card:last-child { border-bottom:0; }
.admin-mobile-top { display:flex; align-items:flex-start; gap:10px; }
.admin-mobile-main { min-width:0; flex:1; }
.admin-mobile-title { font-weight:780; word-break:break-word; }
.admin-mobile-user { color:var(--muted); font-size:12px; margin-top:3px; }
.admin-mobile-content { margin-top:10px; padding:10px; max-height:120px; overflow:hidden; white-space:pre-wrap; word-break:break-word; border-radius:10px; background:#fafbfe; line-height:1.55; font-size:13px; }
.admin-mobile-actions { display:flex; flex-wrap:wrap; gap:7px; margin-top:10px; }

@media (max-width: 720px) {
  .topbar { padding:11px 14px; }
  .brand-title { font-size:16px; }
  .brand-mark { width:34px; height:34px; }
  .user-chip { display:none; }
  .page { width:min(100% - 20px,1180px); margin-top:16px; margin-bottom:90px; }
  .page-head { align-items:center; }
  .page-title { font-size:22px; }
  .page-subtitle { font-size:12px; }
  .page-head .btn-primary { position:fixed; right:16px; bottom:18px; z-index:45; min-height:50px; border-radius:16px; padding:12px 17px; box-shadow:0 12px 30px rgba(79,103,255,.34); }
  .stats { gap:9px; }
  .stat-card { padding:13px; border-radius:14px; }
  .stat-value { font-size:22px; }
  .toolbar { padding:9px; border-radius:14px; }
  .toolbar .select { width:auto; flex:0 0 92px; }
  .copy-card { border-radius:15px; }
  .copy-card-head { padding:14px 14px 0; }
  .copy-content { margin:12px 14px 0; padding:12px; font-size:15px; }
  .copy-actions { padding:12px 14px 14px; }
  .media-grid { grid-template-columns:repeat(2,minmax(0,1fr)); margin:10px 14px 0; gap:7px; }
  .media-name { display:none; }
  .media-toolbar { justify-content:flex-end; }
  .modal-backdrop { align-items:flex-end; padding:0; }
  .modal { width:100%; max-height:94vh; border-radius:20px 20px 0 0; }
  .modal-body { padding:15px; }
  .textarea { min-height:240px; }
  .login-card { padding:24px 20px; border-radius:20px; }
  .admin-tabs { overflow:auto; }
  .desktop-table { display:none; }
  .mobile-copy-list { display:block; }
  .user-form { grid-template-columns:1fr; }
  .admin-panel-head { padding:12px; }
  .admin-panel-head .toolbar { width:100%; margin:0; box-shadow:none; border:0; padding:0; }
  .pagination { margin:14px 0; }
}