:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --border: #e5e6eb;
  --border-soft: #f0f1f3;
  --text: #1f2329;
  --text-2: #4e5969;
  --text-3: #86909c;
  --brand: #165dff;
  --brand-hover: #0e42d2;
  --brand-soft: #e8f0ff;
  --danger: #f53f3f;
  --ok: #00b42a;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
[hidden] { display: none !important; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand { display: flex; align-items: baseline; gap: 8px; }
.brand strong { font-size: 16px; font-weight: 500; }
.brand span { color: var(--text-3); font-size: 12px; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 24px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  font-size: 13px;
  transition: background .15s;
}
.btn:hover { background: var(--brand-hover); text-decoration: none; }
.btn.ghost {
  background: var(--panel);
  color: var(--text-2);
  border: 1px solid var(--border);
}
.btn.ghost:hover { background: #f7f8fa; color: var(--text); }
.btn.danger { background: var(--danger); }
.btn.danger:hover { background: #cb2634; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.sm { padding: 4px 12px; font-size: 13px; border-radius: 6px; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.panel + .panel { margin-top: 16px; }

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.panel-head h2 { margin: 0; font-size: 15px; font-weight: 500; }
.panel-head .hint { color: var(--text-3); font-size: 12px; }

.muted { color: var(--text-3); }

/* 登录 */
.login { max-width: 380px; margin: 12vh auto; }
.login h1 { margin: 0 0 6px; font-size: 18px; font-weight: 500; }
.login p { margin: 0 0 20px; color: var(--text-3); font-size: 13px; }
.field { display: flex; gap: 8px; }
.field input {
  flex: 1;
  min-width: 0;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
  transition: border-color .15s;
}
.field input:focus { border-color: var(--brand); }

/* 上传区 */
.drop {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  background: #fafbfc;
  transition: border-color .15s, background .15s;
}
.drop.hot { border-color: var(--brand); background: var(--brand-soft); }
.drop strong { display: block; margin-bottom: 4px; font-weight: 500; }
.drop span { color: var(--text-3); font-size: 12px; }
.drop .btn { margin-top: 14px; }

/* 上传队列 */
.queue { margin-top: 14px; display: grid; gap: 10px; }
.queue-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 12px;
  font-size: 13px;
}
.queue-item .qname {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.queue-item .qstat { color: var(--text-3); font-size: 12px; }
.queue-item.err .qstat { color: var(--danger); }
.queue-item .bar {
  grid-column: 1 / -1;
  height: 4px;
  border-radius: 2px;
  background: var(--border-soft);
  overflow: hidden;
}
.queue-item .bar i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--brand);
  transition: width .2s;
}

/* 文件网格 */
.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 14px;
  background: var(--brand-soft);
  border-radius: 8px;
  margin-bottom: 14px;
  font-size: 13px;
}
.toolbar .spacer { flex: 1; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
}

.card {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--panel);
  position: relative;
  transition: border-color .15s, box-shadow .15s;
}
.card:hover { border-color: #c9cdd4; box-shadow: 0 2px 10px rgba(0, 0, 0, .05); }
.card.picked { border-color: var(--brand); box-shadow: 0 0 0 2px var(--brand-soft); }

.card .thumb {
  position: relative;
  aspect-ratio: 4 / 3;
  background: #f2f3f5;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.card .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card .thumb .ph { color: var(--text-3); font-size: 12px; letter-spacing: .5px; }
.card .pick {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1.5px solid #fff;
  background: rgba(0, 0, 0, .3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 12px;
  opacity: 0;
  transition: opacity .15s;
}
.card:hover .pick, .card.picked .pick { opacity: 1; }
.card.picked .pick { background: var(--brand); border-color: var(--brand); }

.card .info { padding: 10px 12px; }
.card .fname {
  font-size: 13px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: 2px;
}
.card .fmeta { color: var(--text-3); font-size: 12px; }
.card .acts {
  display: flex;
  gap: 4px;
  padding: 0 8px 10px;
  flex-wrap: wrap;
}
.card .acts button {
  font-size: 12px;
  color: var(--text-2);
  padding: 3px 8px;
  border-radius: 6px;
}
.card .acts button:hover { background: var(--border-soft); color: var(--text); }
.card .acts button.del:hover { background: #ffece8; color: var(--danger); }

.empty {
  text-align: center;
  padding: 48px 16px;
  color: var(--text-3);
}

/* 分享列表 */
.share-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--border-soft);
  font-size: 13px;
}
.share-row:first-child { border-top: 0; }
.share-row .stitle { font-weight: 500; }
.share-row .sinfo { color: var(--text-3); font-size: 12px; }
.share-row .spacer { flex: 1; }
.share-row .expired { color: var(--danger); }

/* 提示条 */
.toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  background: rgba(31, 35, 41, .92);
  color: #fff;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 13px;
  z-index: 100;
  max-width: 80vw;
}
.toast.err { background: rgba(203, 38, 52, .95); }

/* 顶栏按钮组 */
.topbar-actions { display: flex; gap: 8px; }

/* 分享表单 */
.share-form input,
.share-form select {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  outline: none;
}
.share-form input { flex: 1; min-width: 150px; }
.share-form input:focus { border-color: var(--brand); }

/* 标签页 */
.tabs {
  display: flex;
  gap: 4px;
  margin-top: 16px;
  border-bottom: 1px solid var(--border);
}
.tab {
  padding: 9px 16px;
  font-size: 14px;
  color: var(--text-2);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color .15s, border-color .15s;
}
.tab:hover { color: var(--text); }
.tab.is-active {
  color: var(--brand);
  border-bottom-color: var(--brand);
  font-weight: 500;
}
.tab-panel { margin-top: 16px; }

/* 顶栏内导航：胶囊式，与页面主体区分开 */
.topbar .tabs {
  margin: 0;
  padding: 3px;
  gap: 2px;
  border-bottom: 0;
  background: var(--bg);
  border-radius: 9px;
}
.topbar .tab {
  padding: 6px 18px;
  margin: 0;
  border-bottom: 0;
  border-radius: 7px;
  font-size: 13px;
}
.topbar .tab.is-active {
  background: var(--panel);
  color: var(--brand);
  box-shadow: 0 1px 3px rgba(31, 35, 41, .08);
}

/* 设置视图：与二级目录互斥 */
#settingsView { margin-top: 16px; }
#settingsView .panel + .panel { margin-top: 16px; }

/* 设置表单 */
.form-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.form-row label { color: var(--text-2); font-size: 13px; }
.form-row input {
  width: 100%;
  max-width: 420px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
  transition: border-color .15s;
}
.form-row input:focus { border-color: var(--brand); }
.form-actions { display: flex; gap: 8px; margin-top: 16px; }
.panel-head.mt { margin-top: 26px; }

/* 容量条 */
.usage { margin-bottom: 18px; }
.usage-bar {
  height: 8px;
  border-radius: 4px;
  background: var(--border-soft);
  overflow: hidden;
}
.usage-bar i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--brand);
  transition: width .3s;
}
.usage-bar i.warn { background: #ff7d00; }
.usage-bar i.full { background: var(--danger); }
.usage-text { margin-top: 8px; color: var(--text-2); font-size: 13px; }
.usage-text strong { font-weight: 500; color: var(--text); }

/* 说明文字 */
.note {
  margin: 0;
  padding: 14px 16px;
  background: #fafbfc;
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  color: var(--text-2);
  font-size: 13px;
  line-height: 1.9;
}
.note code {
  padding: 1px 6px;
  background: var(--brand-soft);
  color: var(--brand);
  border-radius: 4px;
  font-size: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* API 密钥 */
/* API 地址展示 */
.api-base {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding: 10px 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.api-base-label { flex: none; color: var(--text-3); font-size: 13px; }
.api-base code {
  flex: 1;
  min-width: 0;
  padding: 0;
  overflow-x: auto;
  white-space: nowrap;
  background: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  color: var(--text);
}
.api-base .btn { flex: none; }

.key-box {
  margin-top: 16px;
  padding: 14px 16px;
  border: 1px solid #ffd8bf;
  background: #fff7e8;
  border-radius: 8px;
}
.key-box-head { font-size: 13px; color: #a65b00; margin-bottom: 10px; }
.key-box-value {
  padding: 10px 12px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow-x: auto;
}
.key-box-value code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  color: var(--text);
  white-space: nowrap;
}
.key-usage {
  margin: 12px 0 0;
  padding: 10px 12px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-2);
  overflow-x: auto;
}
.key-list { margin-top: 16px; }
.key-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 0;
  border-top: 1px solid var(--border-soft);
  font-size: 13px;
}
.key-row:first-child { border-top: 0; }
.key-row .kname { font-weight: 500; }
.key-row .kinfo { color: var(--text-3); font-size: 12px; }
.key-row .spacer { flex: 1; }
.key-row code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: var(--text-2);
}

/* 登录表单 */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.login-form input {
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
  transition: border-color .15s;
}
.login-form input:focus { border-color: var(--brand); }

/* 顶栏当前用户 */
.current-user {
  color: var(--text-2);
  font-size: 13px;
  padding: 4px 10px;
  background: var(--brand-soft);
  border-radius: 6px;
}

/* 用户管理下拉框 */
.form-row select {
  width: 100%;
  max-width: 420px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  outline: none;
}

/* 缓存状态角标 */
.cache-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  line-height: 1.7;
  color: #fff;
  background: rgba(31, 35, 41, .5);
  transition: background .15s;
}
.cache-badge.hit { background: rgba(0, 180, 42, .92); }
.cache-badge.miss { background: rgba(255, 125, 0, .92); }
.cache-badge.probing { background: rgba(31, 35, 41, .4); }

@media (max-width: 600px) {
  .wrap { padding: 16px; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 10px; }
  .topbar { flex-wrap: wrap; padding: 12px 16px; gap: 10px; }
  .topbar .tabs { order: 3; width: 100%; }
  .topbar .tab { flex: 1; }
}