/* ==========================================================================
   CF Drive · 样式表（原生 CSS，无构建步骤）
   ========================================================================== */

:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1f232c;
  --panel-3: #262b36;
  --border: #2c313d;
  --text: #e7eaf0;
  --muted: #98a1b3;
  --accent: #f38020;
  --accent-soft: rgba(243, 128, 32, 0.16);
  --accent-2: #ffa04d;
  --danger: #e5484d;
  --ok: #30a46c;
  --warn: #f5a524;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  --sidebar-w: 248px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f6fa;
    --panel: #ffffff;
    --panel-2: #f1f3f8;
    --panel-3: #e7eaf1;
    --border: #dfe3ec;
    --text: #1a1d24;
    --muted: #67708a;
    --shadow: 0 12px 40px rgba(15, 23, 42, 0.14);
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
a { color: var(--accent); }

/* ------------------------------------------------------------ 通用控件 */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: var(--panel-2);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s, border-color .15s, opacity .15s;
  white-space: nowrap;
}
.btn:hover { background: var(--panel-3); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-2); }
.btn.ghost { background: transparent; border-color: var(--border); }
.btn.ghost:hover { background: var(--panel-2); }
.btn.danger { background: transparent; border-color: var(--danger); color: var(--danger); }
.btn.danger:hover { background: rgba(229, 72, 77, .14); }
.btn.block { width: 100%; }
.btn.sm { padding: 6px 10px; font-size: 13px; }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted);
  font-size: 16px;
  cursor: pointer;
  transition: background .15s, color .15s;
}
.icon-btn:hover { background: var(--panel-2); color: var(--text); }

input[type="text"], input[type="email"], input[type="password"], input[type="search"], input[type="number"], select, textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel-2);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); }

label.field { display: block; margin-bottom: 12px; }
label.field > span { display: block; margin-bottom: 6px; color: var(--muted); font-size: 13px; }

/* ------------------------------------------------------------ 登录页 */

.auth-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
  background:
    radial-gradient(1000px 600px at 15% -10%, rgba(243, 128, 32, .18), transparent 60%),
    radial-gradient(800px 500px at 110% 20%, rgba(59, 130, 246, .16), transparent 55%),
    var(--bg);
}
.auth-card {
  width: 100%;
  max-width: 400px;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--panel);
  box-shadow: var(--shadow);
}
.auth-brand { display: flex; align-items: center; gap: 10px; }
.auth-brand h1 { font-size: 22px; }
.logo-dot { font-size: 24px; }
.auth-sub { margin: 6px 0 20px; color: var(--muted); font-size: 13px; }
.tabs { display: flex; gap: 6px; padding: 4px; margin-bottom: 18px; border-radius: var(--radius-sm); background: var(--panel-2); }
.tab {
  flex: 1; padding: 8px; border: none; border-radius: 6px; background: transparent;
  color: var(--muted); font-size: 14px; font-weight: 600; cursor: pointer;
}
.tab.active { background: var(--panel); color: var(--text); box-shadow: 0 1px 3px rgba(0,0,0,.25); }
.auth-form label { display: block; margin-bottom: 14px; color: var(--muted); font-size: 13px; }
.auth-form input { margin-top: 6px; }
.hint { margin-top: 12px; color: var(--muted); font-size: 12px; text-align: center; }

/* ------------------------------------------------------------ 布局 */

.app { display: flex; min-height: 100vh; }

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: var(--sidebar-w);
  flex: 0 0 var(--sidebar-w);
  padding: 18px 14px;
  border-right: 1px solid var(--border);
  background: var(--panel);
  position: sticky;
  top: 0;
  height: 100vh;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 17px; }
.brand .close-side { display: none; margin-left: auto; }
.upload-main { padding: 11px; }

.nav { display: flex; flex-direction: column; gap: 2px; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border: none; border-radius: var(--radius-sm);
  background: transparent; color: var(--muted); font-size: 14px; font-weight: 600;
  cursor: pointer; text-align: left;
}
.nav-item:hover { background: var(--panel-2); color: var(--text); }
.nav-item.active { background: var(--accent-soft); color: var(--accent); }

.quota-box { margin-top: auto; padding: 12px; border-radius: var(--radius-sm); background: var(--panel-2); }
.quota-head { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); margin-bottom: 8px; }
.quota-bar { height: 6px; border-radius: 4px; background: var(--panel-3); overflow: hidden; }
.quota-bar > i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .3s; }
.quota-bar > i.warn { background: var(--warn); }
.quota-bar > i.full { background: var(--danger); }

.user-box { display: flex; align-items: center; gap: 10px; padding-top: 12px; border-top: 1px solid var(--border); }
.avatar {
  display: flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--accent); color: #fff; font-weight: 700; flex: 0 0 34px;
}
.user-meta { display: flex; flex-direction: column; min-width: 0; }
.user-meta strong { font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-meta span { font-size: 11px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 20px; border-bottom: 1px solid var(--border);
  background: var(--panel); position: sticky; top: 0; z-index: 20;
}
.menu-btn { display: none; }
.search { position: relative; flex: 1; max-width: 460px; }
.search input { padding-left: 34px; }
.search-icon { position: absolute; left: 11px; top: 50%; transform: translateY(-50%); font-size: 13px; opacity: .7; }
.search .icon-btn { position: absolute; right: 4px; top: 50%; transform: translateY(-50%); width: 26px; height: 26px; font-size: 12px; }
.top-actions { margin-left: auto; display: flex; gap: 4px; }

.crumbs { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; padding: 14px 20px 0; font-size: 14px; }
.crumbs a { color: var(--muted); cursor: pointer; text-decoration: none; }
.crumbs a:hover { color: var(--accent); }
.crumbs .sep { color: var(--border); }
.crumbs .current { font-weight: 700; }

.toolbar { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; padding: 12px 20px; }
.toolbar .spacer { flex: 1; }
.sel-info { color: var(--muted); font-size: 13px; }

.content { flex: 1; padding: 0 20px 90px; }

/* ------------------------------------------------------------ 文件列表 */

.list-head, .row {
  display: grid;
  grid-template-columns: 34px 30px minmax(0, 1fr) 110px 150px 108px;
  align-items: center;
  gap: 8px;
}
.list-head {
  padding: 8px 10px; color: var(--muted); font-size: 12px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .03em; border-bottom: 1px solid var(--border);
}
.list-head .sortable { cursor: pointer; }
.list-head .sortable:hover { color: var(--accent); }

.rows { display: flex; flex-direction: column; }
.row {
  padding: 9px 10px;
  border-bottom: 1px solid var(--border);
  cursor: default;
  border-radius: 6px;
}
.row:hover { background: var(--panel-2); }
.row.selected { background: var(--accent-soft); }
.row .check { display: flex; align-items: center; justify-content: center; }
.row .check input { width: 15px; height: 15px; accent-color: var(--accent); cursor: pointer; }
.row .icon { font-size: 19px; text-align: center; cursor: pointer; }
.row .name {
  display: flex; align-items: center; gap: 8px; min-width: 0;
  font-weight: 500; cursor: pointer;
}
.row .name .text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row .name .tag {
  flex: 0 0 auto; padding: 1px 6px; border-radius: 20px;
  background: var(--panel-3); color: var(--muted); font-size: 11px; font-weight: 600;
}
.row .size, .row .date { color: var(--muted); font-size: 13px; white-space: nowrap; }
.row .row-actions { display: flex; justify-content: flex-end; gap: 2px; opacity: 0; transition: opacity .12s; }
.row:hover .row-actions { opacity: 1; }

.empty { padding: 70px 20px; text-align: center; color: var(--muted); }
.empty .big { font-size: 40px; margin-bottom: 12px; }

/* 网格视图 */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(158px, 1fr)); gap: 14px; padding-top: 8px; }
.card {
  position: relative; display: flex; flex-direction: column; gap: 8px;
  padding: 12px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--panel); cursor: pointer; transition: border-color .15s, transform .1s;
}
.card:hover { border-color: var(--accent); }
.card.selected { border-color: var(--accent); background: var(--accent-soft); }
.card .thumb {
  height: 96px; border-radius: var(--radius-sm); overflow: hidden;
  background: var(--panel-2); display: flex; align-items: center; justify-content: center;
  font-size: 38px;
}
.card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.card .card-name { font-size: 13px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card .card-meta { font-size: 11px; color: var(--muted); }
.card .check { position: absolute; top: 8px; left: 8px; opacity: 0; transition: opacity .12s; }
.card:hover .check, .card.selected .check { opacity: 1; }

/* ------------------------------------------------------------ 上传面板 */

.uploads {
  position: fixed; right: 20px; bottom: 20px; z-index: 40;
  width: 330px; max-height: 46vh; overflow: auto;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--panel); box-shadow: var(--shadow);
}
.uploads header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px; border-bottom: 1px solid var(--border); font-weight: 600; font-size: 13px;
}
.uploads .item { padding: 9px 12px; border-bottom: 1px solid var(--border); }
.uploads .item:last-child { border-bottom: none; }
.uploads .item .line { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.uploads .item .line .fname { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.uploads .item .line .pct { color: var(--muted); font-size: 12px; }
.uploads .bar { height: 4px; margin-top: 6px; border-radius: 3px; background: var(--panel-3); overflow: hidden; }
.uploads .bar > i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .2s; }
.uploads .item.error .bar > i { background: var(--danger); }
.uploads .item.done .bar > i { background: var(--ok); }

.drop-hint {
  position: fixed; inset: 0; z-index: 60;
  display: flex; align-items: center; justify-content: center;
  background: rgba(15, 17, 21, .72); pointer-events: none;
}
.drop-hint > div {
  padding: 26px 34px; border: 2px dashed var(--accent); border-radius: 16px;
  background: var(--panel); font-size: 16px; font-weight: 600; color: var(--accent);
}

/* ------------------------------------------------------------ 弹窗 */

.modal-overlay {
  position: fixed; inset: 0; z-index: 80;
  display: flex; align-items: center; justify-content: center;
  padding: 20px; background: rgba(8, 10, 14, .62);
}
.modal {
  width: 100%; max-width: 440px; max-height: 86vh; display: flex; flex-direction: column;
  border: 1px solid var(--border); border-radius: 14px; background: var(--panel); box-shadow: var(--shadow);
}
.modal.wide { max-width: 620px; }
.modal.preview { max-width: 1000px; width: 100%; }
.modal-head { display: flex; align-items: center; gap: 10px; padding: 16px 18px; border-bottom: 1px solid var(--border); }
.modal-head h3 { font-size: 16px; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.modal-body { padding: 18px; overflow: auto; }
.modal-foot { display: flex; justify-content: flex-end; gap: 10px; padding: 14px 18px; border-top: 1px solid var(--border); }
.preview-stage {
  display: flex; align-items: center; justify-content: center;
  min-height: 320px; max-height: 74vh; overflow: auto; background: var(--bg); border-radius: var(--radius-sm);
}
.preview-stage img, .preview-stage video { max-width: 100%; max-height: 72vh; }
.preview-stage iframe { width: 100%; height: 72vh; border: none; background: #fff; }
.preview-stage pre {
  width: 100%; max-height: 72vh; overflow: auto; padding: 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px;
  white-space: pre-wrap; word-break: break-word; color: var(--text);
}
.info-grid { display: grid; grid-template-columns: 96px 1fr; gap: 8px 12px; font-size: 13px; }
.info-grid dt { color: var(--muted); }

/* 目录选择器 */
.picker { max-height: 320px; overflow: auto; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 6px; }
.picker .node {
  display: flex; align-items: center; gap: 6px; padding: 6px 8px; border-radius: 6px;
  cursor: pointer; font-size: 13px;
}
.picker .node:hover { background: var(--panel-2); }
.picker .node.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.picker .node .toggle { width: 16px; text-align: center; color: var(--muted); }
.picker .children { margin-left: 16px; }

/* 分享链接 */
.share-link { display: flex; gap: 8px; margin-top: 6px; }
.share-link input { font-size: 12px; }

/* ------------------------------------------------------------ 右键菜单 */

.context-menu {
  position: fixed; z-index: 90; min-width: 178px; padding: 6px;
  border: 1px solid var(--border); border-radius: 10px; background: var(--panel); box-shadow: var(--shadow);
}
.context-menu button {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 8px 10px; border: none; border-radius: 6px; background: transparent;
  color: var(--text); font-size: 13px; text-align: left; cursor: pointer;
}
.context-menu button:hover { background: var(--panel-2); }
.context-menu button.danger { color: var(--danger); }
.context-menu hr { margin: 5px 8px; border: none; border-top: 1px solid var(--border); }

/* ------------------------------------------------------------ 提示条 */

.toasts { position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%); z-index: 100; display: flex; flex-direction: column; gap: 8px; }
.toast {
  padding: 11px 18px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--panel-3); box-shadow: var(--shadow); font-size: 13.5px; max-width: 76vw;
}
.toast.ok { border-color: var(--ok); }
.toast.err { border-color: var(--danger); }
.toast.info { border-color: var(--accent); }

/* ------------------------------------------------------------ 后台 / 设置 */

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 14px; }
.stat {
  padding: 16px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel);
}
.stat .label { color: var(--muted); font-size: 12px; }
.stat .value { margin-top: 6px; font-size: 22px; font-weight: 700; }

.table-wrap { overflow: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); }
table.data { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data th, table.data td { padding: 11px 12px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.data th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
table.data tr:last-child td { border-bottom: none; }
table.data td .row-actions { display: flex; gap: 6px; }

.section { margin-bottom: 22px; }
.section > h2 { margin-bottom: 12px; font-size: 16px; }
.settings-card { max-width: 460px; padding: 18px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); }

.badge { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 11px; font-weight: 700; }
.badge.admin { background: var(--accent-soft); color: var(--accent); }
.badge.off { background: rgba(229, 72, 77, .16); color: var(--danger); }
.badge.on { background: rgba(48, 164, 108, .16); color: var(--ok); }

/* ------------------------------------------------------------ 分享页 */

.share-page {
  min-height: 100vh; padding: 32px 18px 48px;
  background:
    radial-gradient(900px 500px at 10% -20%, rgba(243, 128, 32, .16), transparent 60%),
    var(--bg);
}
.share-shell { max-width: 940px; margin: 0 auto; }
.share-head { display: flex; align-items: center; gap: 8px; margin-bottom: 20px; font-size: 16px; }
.share-body {
  padding: 22px; border: 1px solid var(--border); border-radius: 16px;
  background: var(--panel); box-shadow: var(--shadow);
}
.share-foot { margin-top: 18px; text-align: center; color: var(--muted); font-size: 12px; }
.share-file { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.share-file .big-icon { font-size: 46px; }
.share-file .meta { flex: 1; min-width: 200px; }
.share-file .meta h2 { font-size: 18px; word-break: break-all; }
.share-file .meta p { color: var(--muted); font-size: 13px; margin-top: 4px; }
.share-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ------------------------------------------------------------ 响应式 */

@media (max-width: 900px) {
  .list-head, .row { grid-template-columns: 30px 28px minmax(0, 1fr) 92px 92px; }
  .list-head .col-actions, .row .row-actions { display: none; }
}

@media (max-width: 720px) {
  .sidebar {
    position: fixed; z-index: 70; left: 0; top: 0; height: 100vh;
    transform: translateX(-100%); transition: transform .2s; box-shadow: var(--shadow);
  }
  .sidebar.open { transform: translateX(0); }
  .brand .close-side { display: inline-flex; }
  .menu-btn { display: inline-flex; }
  .list-head .col-date, .row .date, .list-head .col-size, .row .size { display: none; }
  .list-head, .row { grid-template-columns: 30px 28px minmax(0, 1fr); }
  .uploads { left: 12px; right: 12px; width: auto; }
  .content { padding: 0 12px 90px; }
  .topbar { padding: 12px; }
  .crumbs, .toolbar { padding-left: 12px; padding-right: 12px; }
}