:root {
  --bg: #0f1115;
  --panel: #181b22;
  --panel-2: #20242d;
  --border: #2a2f3a;
  --text: #e6e8ec;
  --muted: #9aa3b2;
  --accent: #4f8cff;
  --accent-hover: #3d78e8;
  --danger: #ff5d5d;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.hidden { display: none !important; }

/* 登录 */
.login {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.login-card h1 { margin: 0 0 6px; font-size: 22px; text-align: center; }

input[type="password"], input[type="text"], select, textarea {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 10px 12px;
  font-size: 14px;
  outline: none;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
textarea {
  width: 100%;
  min-height: 120px;
  resize: vertical;
  white-space: pre;
  overflow-wrap: normal;
  overflow-x: auto;
}

.error { color: var(--danger); font-size: 13px; margin: 0; min-height: 16px; }

/* 按钮 */
.btn {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); }
.btn.primary:hover { background: var(--accent-hover); }
.btn.ghost { background: transparent; }
.btn.danger { background: transparent; border-color: var(--danger); color: var(--danger); }
.btn.danger:hover { background: var(--danger); color: #fff; }

/* 顶栏 */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 16px; }
.breadcrumb { flex: 1; color: var(--muted); font-size: 14px; display: flex; gap: 6px; flex-wrap: wrap; }
.breadcrumb a { color: var(--accent); cursor: pointer; text-decoration: none; }
.breadcrumb span.sep { color: var(--muted); }
.actions { display: flex; gap: 8px; }

/* 工具栏 */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 20px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.stats { color: var(--muted); font-size: 13px; }
.tools { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tools input, .tools select { padding: 7px 10px; font-size: 13px; }
.tools input { width: 200px; }

/* 网格 */
.dropzone { padding: 20px; min-height: calc(100vh - 110px); }
.dropzone.dragover { outline: 2px dashed var(--accent); outline-offset: -10px; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.card.folder { cursor: pointer; }
.thumb {
  aspect-ratio: 1 / 1;
  background: var(--panel-2);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.thumb { position: relative; }
.thumb img { width: 100%; height: 100%; object-fit: cover; cursor: zoom-in; }
.thumb .folder-icon { font-size: 48px; }
.card.selected { outline: 2px solid var(--accent); outline-offset: -2px; }
.sel-box {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 22px;
  height: 22px;
  cursor: pointer;
  accent-color: var(--accent);
  z-index: 2;
}
.card .meta { padding: 8px 10px; display: flex; flex-direction: column; gap: 4px; }
.card .name { font-size: 13px; word-break: break-all; }
.card .sub { font-size: 11px; color: var(--muted); }
.card .row { display: flex; gap: 6px; margin-top: 4px; }
.card .row button {
  flex: 1;
  font-size: 12px;
  padding: 5px 0;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  cursor: pointer;
}
.card .row button.del:hover { border-color: var(--danger); color: var(--danger); }
.empty { color: var(--muted); text-align: center; margin-top: 60px; }

/* 列表模式：一行一条 */
.grid.list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.grid.list .card {
  flex-direction: row;
  align-items: center;
  padding: 6px 12px;
  gap: 14px;
}
.grid.list .thumb {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  border-radius: 6px;
}
.grid.list .thumb .folder-icon { font-size: 24px; }
.grid.list .sel-box { width: 18px; height: 18px; top: 2px; left: 2px; }
.grid.list .meta {
  flex-direction: row;
  align-items: center;
  flex: 1;
  gap: 16px;
  padding: 0;
  min-width: 0;
}
.grid.list .name {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  word-break: normal;
}
.grid.list .sub { flex: 0 0 auto; }
.grid.list .row { margin-top: 0; flex: 0 0 auto; gap: 6px; }
.grid.list .row button { flex: 0 0 auto; padding: 5px 14px; }

/* 上传进度 */
.uploads {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 340px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  z-index: 30;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  overflow: hidden;
}
.up-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
}
.up-close {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}
.up-close:hover { color: var(--text); }
.up-overall { height: 3px; background: var(--panel-2); }
.up-overall > i { display: block; height: 100%; width: 0; background: var(--accent); transition: width 0.2s; }
.up-list { max-height: 44vh; overflow: auto; padding: 10px 12px; }
.up-item { font-size: 12px; margin-bottom: 10px; }
.up-item:last-child { margin-bottom: 0; }
.up-item .top { display: flex; justify-content: space-between; gap: 8px; }
.up-item .fname { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1; }
.up-item .status { color: var(--muted); flex-shrink: 0; }
.up-item.done .status { color: #38c172; }
.up-item.err .status { color: var(--danger); }
.up-item .bar { height: 4px; background: var(--panel-2); border-radius: 2px; overflow: hidden; margin-top: 4px; }
.up-item .bar > i { display: block; height: 100%; width: 0; background: var(--accent); transition: width 0.2s; }
.up-item.done .bar > i { background: #38c172; }
.up-item.err .bar > i { background: var(--danger); }
.up-item .retry {
  margin-top: 4px;
  font-size: 11px;
  padding: 3px 8px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  cursor: pointer;
}
.up-item .retry:hover { border-color: var(--accent); }

/* 弹窗 */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 40;
}
.modal-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  width: 420px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.modal-card h3 { margin: 0; }
.modal-card label { font-size: 13px; color: var(--muted); }
.checkbox { display: flex; align-items: center; gap: 8px; color: var(--text); }
.link-row { display: flex; gap: 8px; }
.link-row input { flex: 1; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 6px; }

/* 原图预览 lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  z-index: 60;
  cursor: zoom-out;
}
.lightbox img {
  max-width: 92vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}
.lightbox-caption {
  margin-top: 12px;
  color: var(--text);
  font-size: 13px;
  max-width: 80vw;
  text-align: center;
  word-break: break-all;
}
.lightbox-close {
  position: absolute;
  top: 16px;
  right: 24px;
  background: none;
  border: none;
  color: #fff;
  font-size: 34px;
  line-height: 1;
  cursor: pointer;
}
.lightbox-close:hover { color: var(--accent); }
.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: #fff;
  font-size: 40px;
  line-height: 1;
  width: 56px;
  height: 72px;
  border-radius: 8px;
  cursor: pointer;
}
.lightbox-nav:hover { background: rgba(255, 255, 255, 0.2); }
.lightbox-nav.prev { left: 20px; }
.lightbox-nav.next { right: 20px; }
.lightbox-bar {
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 80vw;
}
.lightbox-download {
  flex-shrink: 0;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 7px 16px;
  border-radius: 8px;
  font-size: 13px;
}
.lightbox-download:hover { background: var(--accent-hover); }

/* toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--panel-2);
  border: 1px solid var(--border);
  padding: 10px 18px;
  border-radius: 8px;
  z-index: 50;
  font-size: 14px;
}