:root {
  --bg: #0b0f14;
  --panel: #121821;
  --panel2: #161d28;
  --line: #1e2833;
  --text: #e6edf3;
  --muted: #8b9bb0;
  --accent: #2b7aff;
  --danger: #ff5d5d;
  --ok: #34c77b;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
button, input { font: inherit; }

/* login */
.login-screen { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.login-card { width: 100%; max-width: 340px; padding: 32px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel); display: flex; flex-direction: column; gap: 12px; }
.login-card h1 { margin: 0 0 8px; font-size: 20px; }
.login-card input { padding: 10px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg); color: var(--text); }
.login-card button { padding: 10px 12px; border-radius: 8px; border: none; background: var(--accent); color: #fff; cursor: pointer; }
.error { color: var(--danger); font-size: 13px; }

/* app shell */
.app { display: flex; flex-direction: column; height: 100vh; }
.topbar { display: flex; align-items: center; gap: 24px; padding: 10px 20px; border-bottom: 1px solid var(--line); background: var(--panel); }
.brand { font-weight: 600; }
.tabs { display: flex; gap: 4px; flex: 1; }
.tab-btn { background: none; border: none; color: var(--muted); padding: 8px 14px; border-radius: 8px; cursor: pointer; }
.tab-btn.active { background: var(--panel2); color: var(--text); }
.user-box { display: flex; align-items: center; gap: 10px; color: var(--muted); }
.user-box button { background: none; border: 1px solid var(--line); color: var(--text); padding: 6px 10px; border-radius: 8px; cursor: pointer; }

.tab-panel { flex: 1; overflow: auto; padding: 20px; }
.split { display: flex; padding: 16px; }
.pane { flex: 1 1 50%; min-width: 220px; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px; overflow: auto; }
.pane h2 { margin: 0 0 12px; font-size: 15px; }

.split-divider { width: 17px; flex: 0 0 auto; position: relative; cursor: col-resize; }
.split-divider::before {
  content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 3px;
  background: var(--line); border-radius: 2px;
}
.split-divider:hover::before, .split-divider.dragging::before { background: var(--accent); }
.pane h3 { margin: 16px 0 8px; font-size: 13px; color: var(--muted); font-weight: 500; }

.dropzone { border: 2px dashed var(--line); border-radius: 12px; padding: 24px; text-align: center; color: var(--muted); cursor: pointer; }
.dropzone.dragover { border-color: var(--accent); color: var(--text); }
.dropzone small { color: var(--muted); }

.file-list { display: flex; flex-direction: column; gap: 4px; margin-top: 8px; }
.file-row { display: flex; align-items: center; gap: 8px; padding: 6px 8px; border-radius: 6px; background: var(--panel2); font-size: 13px; }
.file-row .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-row .size { color: var(--muted); font-size: 12px; }
.file-row .remove { cursor: pointer; color: var(--muted); }
.file-row .remove:hover { color: var(--danger); }

.primary-btn { display: inline-block; margin-top: 16px; padding: 10px 18px; border-radius: 8px; border: none; background: var(--accent); color: #fff; cursor: pointer; text-decoration: none; }
.primary-btn:disabled { opacity: .4; cursor: default; }

.progress-area { margin-top: 14px; }
.progress-bar-track { height: 6px; border-radius: 3px; background: var(--line); overflow: hidden; }
.progress-bar-fill { height: 100%; width: 0%; background: var(--accent); transition: width .15s ease; }
.progress-label { margin-top: 6px; font-size: 12px; color: var(--muted); }

.analyzing { margin-top: 14px; display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.spinner { width: 16px; height: 16px; flex-shrink: 0; border: 2px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.status { margin-top: 10px; font-size: 13px; color: var(--muted); }
.status.error { color: var(--danger); }
.status.ok { color: var(--ok); }

.empty-hint { color: var(--muted); padding: 40px 0; text-align: center; }
.result-toolbar { display: flex; align-items: center; gap: 16px; margin-bottom: 12px; }

.table-wrap { overflow: auto; max-height: calc(100vh - 220px); border: 1px solid var(--line); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; font-size: 12px; }
th, td { border-bottom: 1px solid var(--line); padding: 6px 8px; text-align: left; white-space: nowrap; }
th { position: sticky; top: 0; background: var(--panel2); }
td.wrap { white-space: normal; max-width: 360px; }
tr:hover td { background: rgba(255,255,255,.02); }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; }
.badge.done { background: rgba(52,199,123,.15); color: var(--ok); }
.badge.error { background: rgba(255,93,93,.15); color: var(--danger); }
.badge.processing { background: rgba(43,122,255,.15); color: var(--accent); }