:root {
  --bg: #0b0f17;
  --bg-soft: #111827;
  --panel: #151d2e;
  --panel-2: #1b2538;
  --border: #24304a;
  --text: #e6edf7;
  --text-dim: #8fa1bd;
  --accent: #38bdf8;
  --accent-2: #818cf8;
  --green: #34d399;
  --red: #f87171;
  --amber: #fbbf24;
  --radius: 14px;
  --shadow: 0 12px 32px rgba(0, 0, 0, .35);
}

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

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: radial-gradient(1200px 600px at 70% -10%, #12203a 0%, transparent 60%),
              radial-gradient(900px 500px at -10% 110%, #141b33 0%, transparent 55%),
              var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.hidden { display: none !important; }

/* ---------- 通用 ---------- */
button { cursor: pointer; border: none; background: none; color: var(--text); font-family: inherit; }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b0f17;
  font-weight: 700;
  border-radius: 10px;
  padding: 10px 20px;
  transition: transform .12s, box-shadow .2s;
  box-shadow: 0 6px 18px rgba(56, 189, 248, .25);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(56, 189, 248, .35); }
.btn-primary:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.btn-block { display: block; width: 100%; }

.btn-ghost {
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 8px 14px;
  color: var(--text-dim);
  background: rgba(255,255,255,.02);
  transition: all .15s;
}
.btn-ghost:hover { color: var(--text); border-color: var(--accent); }
.btn-sm { padding: 5px 10px; font-size: 13px; }

.icon-btn {
  width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 10px;
  font-size: 17px;
  color: var(--text-dim);
  border: 1px solid transparent;
  transition: all .15s;
}
.icon-btn:hover { color: var(--text); border-color: var(--border); background: var(--panel-2); }

input[type="text"], input[type="password"] {
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 11px 14px;
  font-size: 14px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(56,189,248,.15); }

.badge {
  background: linear-gradient(135deg, var(--amber), #f97316);
  color: #1a1204;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 20px;
  margin-left: 6px;
}

/* ---------- 登录页 ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.login-card {
  width: 400px; max-width: 100%;
  background: linear-gradient(180deg, var(--panel), var(--bg-soft));
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px 34px 26px;
  box-shadow: var(--shadow);
  text-align: center;
}
.login-logo {
  width: 58px; height: 58px;
  margin: 0 auto 14px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; color: #0b0f17;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 24px rgba(56,189,248,.35);
}
.login-title { font-size: 26px; font-weight: 800; letter-spacing: 1px; }
.login-sub { color: var(--text-dim); font-size: 13px; margin-top: 4px; }
.login-tabs { display: flex; margin: 26px 0 18px; border-bottom: 1px solid var(--border); }
.login-tab {
  flex: 1; padding: 10px 0; color: var(--text-dim); font-size: 14px; font-weight: 600;
  border-bottom: 2px solid transparent; margin-bottom: -1px; transition: all .15s;
}
.login-tab.active { color: var(--accent); border-color: var(--accent); }
.login-form input { margin-bottom: 12px; }
.auth-tip {
  color: var(--red); font-size: 13px; margin: 0 0 12px; text-align: left;
}
.register-note {
  color: var(--amber); font-size: 12px; margin-top: 14px; text-align: center;
}
.login-footer { margin-top: 26px; color: var(--text-dim); font-size: 12px; }

/* ---------- 顶部导航 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 18px;
  padding: 14px 26px;
  background: rgba(11, 15, 23, .85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 9px; font-weight: 800; font-size: 17px; white-space: nowrap; }
.brand-mark {
  width: 30px; height: 30px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 9px; font-size: 14px; color: #0b0f17;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.search-wrap { flex: 1; max-width: 460px; position: relative; }
.search-icon { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--text-dim); font-size: 16px; }
.search-wrap input { padding-left: 38px; }
.topbar-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.user-chip {
  display: flex; align-items: center;
  background: var(--panel); border: 1px solid var(--border);
  padding: 6px 12px; border-radius: 20px; font-size: 13px; font-weight: 600;
}

/* ---------- 主体 ---------- */
.page-body { max-width: 1180px; margin: 0 auto; padding: 26px; }

.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 22px; }
.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex; align-items: center; gap: 14px;
  transition: transform .15s;
}
.stat-card:hover { transform: translateY(-2px); }
.stat-icon { font-size: 24px; }
.stat-label { color: var(--text-dim); font-size: 13px; }
.stat-value { font-size: 21px; font-weight: 800; margin-top: 2px; }

.toolbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px; gap: 12px; flex-wrap: wrap;
}
.toolbar-left { display: flex; align-items: center; gap: 12px; }
.toolbar-right { display: flex; align-items: center; gap: 10px; }
.upload-hint { color: var(--text-dim); font-size: 13px; }
.view-toggle { display: flex; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.view-btn { padding: 8px 12px; color: var(--text-dim); font-size: 15px; transition: all .15s; }
.view-btn.active { background: var(--panel-2); color: var(--accent); }

/* ---------- 文件列表 ---------- */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.panel-head { padding: 15px 20px; font-weight: 700; border-bottom: 1px solid var(--border); }

.file-list { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.file-row {
  display: flex; align-items: center; gap: 14px;
  padding: 13px 18px;
  border-bottom: 1px solid rgba(36, 48, 74, .5);
  transition: background .12s;
}
.file-row:last-child { border-bottom: none; }
.file-row:hover { background: var(--panel-2); }
.file-row .f-icon { font-size: 22px; width: 30px; text-align: center; flex-shrink: 0; }
.file-row .f-main { flex: 1; min-width: 0; }
.file-row .f-name { font-weight: 600; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-row .f-meta { color: var(--text-dim); font-size: 12px; margin-top: 2px; }
.file-row .f-actions { display: flex; gap: 6px; flex-shrink: 0; }
.file-actions-btn {
  padding: 6px 10px; border-radius: 8px; font-size: 12px;
  border: 1px solid var(--border); color: var(--text-dim); transition: all .15s;
}
.file-actions-btn:hover { color: var(--accent); border-color: var(--accent); }
.file-actions-btn.danger:hover { color: var(--red); border-color: var(--red); }

/* ---------- 卡片视图 ---------- */
.file-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; }
.file-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; cursor: pointer; transition: all .15s; position: relative;
}
.file-card:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: var(--shadow); }
.file-card .f-icon { font-size: 34px; margin-bottom: 10px; }
.file-card .f-name { font-size: 13px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-card .f-meta { color: var(--text-dim); font-size: 11px; margin-top: 5px; }
.file-card .f-actions { display: flex; gap: 6px; margin-top: 12px; }

.empty-state { text-align: center; padding: 70px 20px; color: var(--text-dim); }
.empty-icon { font-size: 52px; margin-bottom: 14px; }
.empty-state p { font-size: 16px; }
.empty-sub { font-size: 13px; margin-top: 6px; opacity: .75; }

.pagination { display: flex; align-items: center; justify-content: center; gap: 14px; margin-top: 20px; color: var(--text-dim); font-size: 13px; }

/* ---------- 管理后台 ---------- */
.admin-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.admin-head h2 { font-size: 20px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.admin-table th {
  text-align: left; padding: 12px 16px; color: var(--text-dim);
  border-bottom: 1px solid var(--border); font-weight: 600; white-space: nowrap;
}
.admin-table td { padding: 12px 16px; border-bottom: 1px solid rgba(36,48,74,.5); white-space: nowrap; }
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--panel-2); }

/* ---------- 抽屉 ---------- */
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; width: 400px; max-width: 92vw;
  background: var(--panel); border-left: 1px solid var(--border);
  box-shadow: -16px 0 40px rgba(0,0,0,.4);
  display: flex; flex-direction: column; z-index: 100;
  animation: slideIn .22s ease;
}
@keyframes slideIn { from { transform: translateX(100%); } to { transform: none; } }
.drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border); font-weight: 700;
}
.drawer-body { padding: 20px; overflow-y: auto; }
.drawer-close { color: var(--text-dim); }

.agent-msgs { flex: 1; overflow-y: auto; padding: 18px 20px; display: flex; flex-direction: column; gap: 10px; }
.agent-msg { max-width: 88%; padding: 10px 14px; border-radius: 12px; font-size: 13px; line-height: 1.55; white-space: pre-wrap; }
.agent-msg.user { align-self: flex-end; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #0b0f17; font-weight: 600; }
.agent-msg.bot { align-self: flex-start; background: var(--panel-2); border: 1px solid var(--border); }
.agent-msg.bot b { color: var(--accent); }
.agent-input-wrap { display: flex; gap: 8px; padding: 14px 18px; border-top: 1px solid var(--border); }

.setting-row { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px dashed var(--border); font-size: 14px; }
.status-dot { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; color: var(--text-dim); }
.status-dot::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--text-dim); }
.status-dot.ok { color: var(--green); }
.status-dot.ok::before { background: var(--green); box-shadow: 0 0 8px rgba(52,211,153,.6); }
.status-dot.bad { color: var(--red); }
.status-dot.bad::before { background: var(--red); }
.status-dot.pending::before { background: var(--amber); animation: blink 1s infinite; }
@keyframes blink { 50% { opacity: .3; } }
.setting-sep { height: 1px; background: var(--border); margin: 16px 0; }
.setting-note { color: var(--text-dim); font-size: 13px; margin-bottom: 10px; }
.setting-list { list-style: none; font-size: 12px; color: var(--text-dim); line-height: 1.9; }
.setting-list code { color: var(--accent); background: rgba(56,189,248,.08); padding: 1px 5px; border-radius: 5px; }

/* ---------- Toast & 上传进度 ---------- */
.toast {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%);
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  padding: 12px 22px; border-radius: 12px; font-size: 14px; z-index: 200;
  box-shadow: var(--shadow); animation: fadeUp .2s ease;
}
@keyframes fadeUp { from { opacity: 0; transform: translate(-50%, 10px); } to { opacity: 1; transform: translate(-50%, 0); } }
.toast.error { border-color: var(--red); color: var(--red); }
.toast.success { border-color: var(--green); color: var(--green); }

.upload-progress {
  position: fixed; bottom: 26px; right: 26px; z-index: 150;
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 18px; min-width: 260px; box-shadow: var(--shadow);
}
.up-name { font-size: 13px; font-weight: 600; margin-bottom: 8px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.up-bar { height: 6px; border-radius: 4px; background: var(--panel-2); overflow: hidden; }
.up-bar > i { display: block; height: 100%; width: 0; border-radius: 4px; background: linear-gradient(90deg, var(--accent), var(--green)); transition: width .15s; }

@media (max-width: 640px) {
  .topbar { flex-wrap: wrap; padding: 12px 16px; }
  .search-wrap { order: 3; flex-basis: 100%; max-width: none; }
  .page-body { padding: 16px; }
}