:root {
  --bg: #0e1116;
  --bg2: #161b22;
  --bg3: #1f2630;
  --fg: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --accent2: #2f81f7;
  --accent3: #1f6feb;
  --line-num: #6e7681;
  --hit: #ffd24a;
  --row-hover: #21262d;
  --border: #30363d;
  --danger: #f85149;
  --ok: #3fb950;
  --warn: #d29922;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  display: grid;
  grid-template-columns: 320px 1fr;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  font-size: 13px;
}
button, input {
  font-family: inherit;
  font-size: 13px;
  background: var(--bg3);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  outline: none;
}
button { cursor: pointer; }
button:hover { background: #2b3340; }
button:disabled { opacity: 0.5; cursor: not-allowed; }
input:focus { border-color: var(--accent2); }

/* sidebar */
#sidebar {
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
}
#sidebar header {
  padding: 12px 14px 8px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
#sidebar h1 { margin: 0; font-size: 16px; }
.subtitle { color: var(--muted); font-size: 11px; margin-top: 2px; word-break: break-all; }

.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
}
.tab {
  flex: 1;
  background: transparent;
  border: 0;
  border-radius: 0;
  border-bottom: 2px solid transparent;
  padding: 10px 8px;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}
.tab:hover { background: var(--row-hover); color: var(--fg); }
.tab.active {
  color: var(--fg);
  border-bottom-color: var(--accent2);
  background: transparent;
}

.pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.pane.hidden { display: none; }

.path-bar {
  display: flex;
  gap: 6px;
  padding: 8px;
  border-bottom: 1px solid var(--border);
}
.path-bar input { flex: 1; min-width: 0; }

.file-list {
  flex: 1;
  overflow: auto;
  padding: 4px 0;
}
.file-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-row:hover { background: var(--row-hover); }
.file-row.active { background: #1f3a5f; }
.file-row .icon { width: 18px; text-align: center; }
.file-row .name { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.file-row .size { color: var(--muted); font-size: 11px; }

#sidebar footer {
  padding: 8px;
  border-top: 1px solid var(--border);
}
#sidebar footer input { width: 100%; }

/* downloads pane */
.dl-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px 12px 12px;
  border-bottom: 1px solid var(--border);
}
.dl-form label {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.dl-form input[type="url"] {
  width: 100%;
  padding: 8px 10px;
  border-radius: 6px;
}
.dl-form button {
  margin-top: 2px;
  padding: 8px 10px;
  background: var(--accent3);
  border-color: var(--accent3);
  color: white;
  font-weight: 600;
  border-radius: 6px;
}
.dl-form button:hover { background: var(--accent2); border-color: var(--accent2); }
.dl-form button:disabled { background: var(--bg3); border-color: var(--border); color: var(--muted); }
.dl-info {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.4;
}

.dl-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
}
.dl-toolbar #dlSummary { flex: 1; }
.link-btn {
  background: transparent;
  border: 0;
  padding: 2px 4px;
  color: var(--accent);
  font-size: 11px;
  border-radius: 4px;
}
.link-btn:hover { text-decoration: underline; background: transparent; }

.dl-list {
  flex: 1;
  overflow: auto;
  padding: 6px 8px 12px;
}
.dl-empty {
  color: var(--muted);
  font-size: 12px;
  padding: 14px 4px;
  text-align: center;
}

.dl-job {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  margin: 6px 4px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.dl-job .top {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.dl-job .name {
  flex: 1;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.dl-job .badge {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid var(--border);
  color: var(--muted);
}
.dl-job .badge.queued   { color: var(--muted); }
.dl-job .badge.running  { color: var(--accent); border-color: var(--accent3); }
.dl-job .badge.done     { color: var(--ok); border-color: var(--ok); }
.dl-job .badge.error,
.dl-job .badge.canceled { color: var(--danger); border-color: var(--danger); }

.dl-job .url {
  font-size: 11px;
  color: var(--muted);
  word-break: break-all;
  font-family: ui-monospace, monospace;
}
.dl-job .progress {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  height: 6px;
  overflow: hidden;
}
.dl-job .progress > span {
  position: absolute;
  inset: 0 auto 0 0;
  background: linear-gradient(90deg, var(--accent3), var(--accent));
  transition: width 0.25s ease;
}
.dl-job.indet .progress > span {
  width: 35% !important;
  animation: indet 1.6s ease-in-out infinite;
}
@keyframes indet {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(285%); }
}
.dl-job .stats {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 11px;
  font-family: ui-monospace, monospace;
}
.dl-job .actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.dl-job .actions button {
  font-size: 11px;
  padding: 3px 8px;
}
.dl-job .err {
  color: var(--danger);
  font-size: 11px;
  font-family: ui-monospace, monospace;
  word-break: break-all;
}

/* main */
main {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  min-height: 0;
}
#topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
}
#topbar .title { display: flex; gap: 10px; align-items: baseline; min-width: 0; }
#topbar .title #curFile { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#topbar .meta { color: var(--muted); font-size: 11px; }
#topbar .actions { display: flex; gap: 6px; }
#jumpInput { width: 90px; }

.search-bar {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
}
.search-bar input[type="text"], .search-bar #searchInput { flex: 1; }
#searchInput { flex: 1; }
.search-bar label { color: var(--muted); display: flex; gap: 4px; align-items: center; }
.muted { color: var(--muted); font-size: 11px; }

#content {
  position: relative;
  min-height: 0;
  display: flex;
  overflow: hidden;
}
.viewport {
  flex: 1;
  overflow: auto;
  font-family: ui-monospace, "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 18px;
  background: var(--bg);
  position: relative;
}
.rows {
  position: relative;
  width: 100%;
  will-change: contents;
}
.row {
  position: absolute;
  left: 0;
  right: 0;
  height: 18px;
  line-height: 18px;
  display: flex;
  padding: 0 12px;
  white-space: pre;
  contain: layout style;
}
.row:hover { background: var(--row-hover); }
.row.loading { color: var(--muted); font-style: italic; }
.row.loading .tx::before { content: "…"; }
.row .ln {
  color: var(--line-num);
  user-select: none;
  text-align: right;
  padding: 0 12px 0 4px;
  min-width: 6ch;
  border-right: 1px solid var(--border);
  margin-right: 12px;
  cursor: pointer;
  border-radius: 3px;
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
}
.row .ln:hover {
  color: var(--accent);
  background: rgba(88, 166, 255, 0.08);
}
.row .ln:active { background: rgba(88, 166, 255, 0.18); }
.row .ln.copied {
  color: var(--ok);
  background: rgba(63, 185, 80, 0.18);
}
.row .tx {
  flex: 1;
  white-space: pre;
  overflow: hidden;
  text-overflow: ellipsis;
}


.spacer { width: 1px; }

.search-results {
  position: absolute;
  inset: 0;
  background: var(--bg);
  overflow: auto;
  padding: 8px 0;
  z-index: 5;
}
.search-results.hidden { display: none; }
.sr-row {
  display: flex;
  padding: 4px 12px;
  cursor: pointer;
  font-family: ui-monospace, monospace;
}
.sr-row:hover { background: var(--row-hover); }
.sr-row .ln { color: var(--accent); min-width: 7ch; text-align: right; margin-right: 12px; }
.sr-row mark { background: var(--hit); color: #000; padding: 0 1px; border-radius: 2px; }

.statusbar {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 4px 12px;
  color: var(--muted);
  font-size: 11px;
}

/* toast */
.toast {
  position: fixed;
  bottom: 18px;
  left: 50%;
  transform: translate(-50%, 12px);
  background: var(--bg2);
  color: var(--fg);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 30;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.ok    { border-color: var(--ok); }
.toast.err   { border-color: var(--danger); color: var(--danger); }

@media (max-width: 720px) {
  body { grid-template-columns: 1fr; grid-template-rows: 280px 1fr; }
  #sidebar { border-right: none; border-bottom: 1px solid var(--border); }
}


/* ---------- login page ---------- */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  grid-template-columns: none;
  background: var(--bg);
}
.login-card {
  width: 320px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 24px 22px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.35);
}
.login-card h1 { margin: 0 0 4px; font-size: 22px; }
.login-card .muted { margin: 0 0 18px; }
.login-card label {
  display: block;
  margin: 8px 0 6px;
  color: var(--muted);
  font-size: 12px;
}
.login-card input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  font-size: 14px;
  border-radius: 8px;
}
.login-card button {
  margin-top: 14px;
  width: 100%;
  padding: 10px;
  background: var(--accent2);
  border-color: var(--accent2);
  color: white;
  font-weight: 600;
  border-radius: 8px;
}
.login-card button:hover { background: var(--accent); border-color: var(--accent); }
.err {
  color: var(--danger);
  margin-top: 12px;
  min-height: 18px;
  font-size: 12px;
  text-align: center;
}

/* ---------- logout button in sidebar header ---------- */
.logout-form { margin: 8px 0 0; }
.logout-btn {
  font-size: 11px;
  padding: 4px 8px;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}
.logout-btn:hover { color: var(--fg); background: var(--bg3); }

/* ---------- per-file action button ---------- */
.file-row .more {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.file-row .more:hover { background: var(--bg3); color: var(--fg); }
.section-label {
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

/* ---------- context menu ---------- */
.ctx-menu {
  position: fixed;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
  z-index: 50;
  min-width: 160px;
}
.ctx-menu.hidden { display: none; }
.ctx-menu button {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--fg);
  font-size: 12px;
  text-align: left;
  cursor: pointer;
}
.ctx-menu button:hover { background: var(--row-hover); }
.ctx-menu button.danger { color: var(--danger); }
.ctx-menu button.danger:hover { background: rgba(248, 81, 73, 0.12); }
.ctx-menu .ctx-sep {
  height: 1px;
  background: var(--border);
  margin: 4px 2px;
}

/* ---------- modal ---------- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 60;
  padding: 20px;
}
.modal.hidden { display: none; }
.modal-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px 22px 18px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  width: 100%;
  max-width: 380px;
}
.modal-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
}
.modal-body {
  color: var(--fg);
  font-size: 13px;
  line-height: 1.45;
  margin-bottom: 16px;
  word-break: break-all;
}
.modal-body .hint {
  color: var(--muted);
  font-size: 11px;
  margin-top: 4px;
}
.modal-body input[type="text"],
.modal-body input[type="password"] {
  width: 100%;
  padding: 9px 12px;
  font-size: 13px;
  border-radius: 6px;
  margin-top: 10px;
  background: var(--bg3);
  color: var(--fg);
  border: 1px solid var(--border);
}
.modal-body input:focus { border-color: var(--accent2); outline: none; }
.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}
.modal-actions button {
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 500;
  font-size: 12px;
  border: 1px solid var(--border);
  background: var(--bg3);
  color: var(--fg);
}
.modal-actions button.primary {
  background: var(--accent3);
  border-color: var(--accent3);
  color: white;
}
.modal-actions button.primary:hover { background: var(--accent2); border-color: var(--accent2); }
.modal-actions button.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: white;
}
.modal-actions button.danger:hover { filter: brightness(1.1); }