:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --primary: #2563eb;
  --primary-soft: #eff6ff;
  --danger: #ef4444;
  --ok: #10b981;
  --warn: #f59e0b;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 8px 24px rgba(16, 24, 40, .06);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
button, input, select, textarea { font-family: inherit; font-size: 14px; color: inherit; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 8px; border: 3px solid var(--bg); }

/* ---------- 登录 ---------- */
.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.auth-card { width: 100%; max-width: 400px; background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 32px; box-shadow: var(--shadow); }
.auth-card h1 { margin: 0 0 4px; font-size: 22px; }
.auth-card .sub { color: var(--muted); margin-bottom: 24px; }
.auth-tabs { display: flex; gap: 8px; margin-bottom: 20px; background: #f3f4f6; padding: 4px; border-radius: 10px; }
.auth-tabs button { flex: 1; border: 0; background: transparent; padding: 8px; border-radius: 8px; cursor: pointer; color: var(--muted); }
.auth-tabs button.active { background: #fff; color: var(--text); box-shadow: var(--shadow); }
.field { margin-bottom: 14px; }
.field label { display: block; margin-bottom: 6px; font-size: 13px; color: var(--muted); }
.input, select.input, textarea.input {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; background: #fff; outline: none; transition: .15s;
}
.input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, .12); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 16px; border-radius: 10px; border: 1px solid var(--border);
  background: #fff; color: var(--text); cursor: pointer; transition: .15s; white-space: nowrap;
}
.btn:hover { background: #f9fafb; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: #1d4ed8; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-sm { padding: 5px 10px; font-size: 13px; border-radius: 8px; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-block { width: 100%; }

/* ---------- 布局 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 30; background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(8px); border-bottom: 1px solid var(--border);
}
.topbar-inner { max-width: 1240px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; }
.logo-mark {
  width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; color: #fff; font-size: 15px;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
}
.tabs { display: flex; gap: 4px; margin-left: 8px; }
.tabs button { border: 0; background: transparent; padding: 8px 14px; border-radius: 9px; cursor: pointer; color: var(--muted); }
.tabs button.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.spacer { flex: 1; }
.user-chip { display: flex; align-items: center; gap: 8px; padding: 4px 10px 4px 4px; border: 1px solid var(--border); border-radius: 999px; }
.avatar { width: 26px; height: 26px; border-radius: 50%; background: var(--primary-soft); color: var(--primary); display: grid; place-items: center; font-weight: 700; font-size: 12px; }
.badge { font-size: 12px; padding: 1px 8px; border-radius: 999px; background: #f3f4f6; color: var(--muted); }
.badge.admin { background: #fef3c7; color: #92400e; }

.container { max-width: 1240px; margin: 0 auto; padding: 20px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-pad { padding: 20px; }
.section-title { font-size: 15px; font-weight: 600; margin: 0 0 12px; display: flex; align-items: center; gap: 8px; }
.muted { color: var(--muted); }
.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.hidden { display: none !important; }

/* ---------- 上传区 ---------- */
.dropzone {
  border: 2px dashed #cbd5e1; border-radius: 16px; background: #fff; padding: 44px 20px; text-align: center;
  transition: .18s; cursor: pointer;
}
.dropzone:hover { border-color: var(--primary); background: #fbfdff; }
.dropzone.over { border-color: var(--primary); background: var(--primary-soft); transform: scale(1.005); }
.dropzone .dz-icon { font-size: 34px; }
.dropzone h3 { margin: 10px 0 6px; font-size: 17px; }
.dropzone p { margin: 0; color: var(--muted); }
.dropzone .hint { margin-top: 14px; font-size: 12px; color: #9ca3af; }
.uplist { margin-top: 16px; display: grid; gap: 10px; }
.up-item { display: flex; gap: 12px; align-items: center; padding: 12px; border: 1px solid var(--border); border-radius: 12px; background: #fff; }
.up-item img { width: 56px; height: 56px; object-fit: cover; border-radius: 8px; background: #f3f4f6; }
.up-item .meta { flex: 1; min-width: 0; }
.up-item .name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.up-item .url { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.linkbox { display: flex; gap: 6px; margin-top: 6px; }
.linkbox input { flex: 1; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }

/* ---------- 图库 ---------- */
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar .input { width: auto; min-width: 180px; }
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 14px; }
.tile { position: relative; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; background: #fff; transition: .15s; }
.tile:hover { box-shadow: var(--shadow); transform: translateY(-1px); }
.tile.selected { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, .15); }
.tile .thumb { width: 100%; height: 130px; object-fit: cover; display: block; background: #f3f4f6; cursor: pointer; }
.tile .tinfo { padding: 8px 10px; font-size: 12px; color: var(--muted); }
.tile .tname { color: var(--text); font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tile .check { position: absolute; top: 8px; left: 8px; width: 20px; height: 20px; border-radius: 6px; background: rgba(255, 255, 255, .9); border: 1px solid var(--border); cursor: pointer; display: grid; place-items: center; font-size: 12px; color: #fff; }
.tile.selected .check { background: var(--primary); border-color: var(--primary); }
.tile .lock { position: absolute; top: 8px; right: 8px; background: rgba(0, 0, 0, .55); color: #fff; font-size: 11px; padding: 2px 6px; border-radius: 999px; }
.tile .ops { position: absolute; bottom: 8px; right: 8px; display: none; gap: 6px; }
.tile:hover .ops { display: flex; }
.tile .ops button { border: 0; background: rgba(255, 255, 255, .95); border-radius: 8px; padding: 4px 8px; cursor: pointer; font-size: 12px; box-shadow: var(--shadow); }

table.tbl { width: 100%; border-collapse: collapse; }
table.tbl th, table.tbl td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; }
table.tbl th { font-size: 12px; color: var(--muted); font-weight: 600; background: #fafafa; }
table.tbl tr:hover td { background: #fafbfc; }
.empty { padding: 60px 20px; text-align: center; color: var(--muted); }
.pager { display: flex; justify-content: center; align-items: center; gap: 10px; margin-top: 18px; }

/* ---------- 用量 ---------- */
.quota { height: 8px; background: #eef2f7; border-radius: 999px; overflow: hidden; margin: 8px 0 4px; }
.quota > i { display: block; height: 100%; background: linear-gradient(90deg, #3b82f6, #8b5cf6); }

/* ---------- 设置 ---------- */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.switch { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.switch input { display: none; }
.switch .track { width: 40px; height: 22px; border-radius: 999px; background: #d1d5db; position: relative; transition: .18s; }
.switch .track::after { content: ''; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%; background: #fff; transition: .18s; box-shadow: 0 1px 3px rgba(0, 0, 0, .2); }
.switch input:checked + .track { background: var(--primary); }
.switch input:checked + .track::after { transform: translateX(18px); }
.keybox { display: flex; gap: 8px; align-items: center; }
.keybox code { flex: 1; background: #f3f4f6; padding: 10px 12px; border-radius: 10px; font-size: 12px; overflow: auto; word-break: break-all; }

/* ---------- 浮层 ---------- */
.toast-wrap { position: fixed; right: 20px; bottom: 20px; z-index: 100; display: grid; gap: 8px; }
.toast { background: #111827; color: #fff; padding: 10px 16px; border-radius: 10px; box-shadow: var(--shadow); animation: pop .18s ease; font-size: 13px; }
.toast.ok { background: #065f46; }
.toast.err { background: #991b1b; }
@keyframes pop { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.modal { position: fixed; inset: 0; background: rgba(17, 24, 39, .55); display: grid; place-items: center; z-index: 80; padding: 20px; }
.modal .box { background: #fff; border-radius: 14px; padding: 20px; width: 100%; max-width: 420px; box-shadow: var(--shadow); }
.lightbox { position: fixed; inset: 0; background: rgba(17, 24, 39, .85); display: grid; place-items: center; z-index: 90; }
.lightbox img { max-width: 92vw; max-height: 88vh; border-radius: 8px; }
.lightbox .close { position: absolute; top: 20px; right: 24px; color: #fff; font-size: 28px; cursor: pointer; }
@media (max-width: 640px) {
  .topbar-inner { flex-wrap: wrap; }
  .tabs { order: 3; width: 100%; overflow-x: auto; }
}

/* 复制链接菜单 */
.copymenu { position: fixed; z-index: 200; min-width: 168px; background: #fff; border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow); padding: 6px; }
.copymenu .cm-title { padding: 6px 10px 8px; font-size: 12px; color: var(--muted); }
.copymenu button { display: block; width: 100%; text-align: left; border: 0; background: transparent; padding: 8px 10px; border-radius: 8px; cursor: pointer; font-size: 13px; color: var(--text); }
.copymenu button:hover { background: #f3f4f6; }
.copymenu .cm-def { float: right; font-size: 11px; color: var(--muted); }