:root {
  --bg: #0f1319;
  --bg2: #141a22;
  --panel: #1a212b;
  --panel2: #202836;
  --border: #2c3646;
  --text: #e6eaf0;
  --muted: #8b94a3;
  --accent: #4f8cff;
  --accent2: #3b6fd1;
  --ok: #37c978;
  --warn: #e6b23c;
  --err: #ff5d5d;
  --radius: 10px;
  --sidebar-w: 220px;
  --topbar-h: 56px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

.hidden { display: none !important; }
.mono { font-family: ui-monospace, "JetBrains Mono", monospace; }
.muted { color: var(--muted); }

h1, h2, h3 { margin: 0; font-weight: 600; }

/* ---------- login ---------- */
#login-view { display: flex; justify-content: center; align-items: center; min-height: 100vh; }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  width: 340px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
label { display: flex; flex-direction: column; gap: 6px; color: var(--muted); }

/* ---------- inputs & buttons ---------- */
input, select, textarea {
  font: inherit;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg2);
  color: var(--text);
  padding: 7px 10px;
}
input:focus, select:focus { outline: 1px solid var(--accent); }

.btn {
  font: inherit;
  border-radius: 6px;
  border: none;
  background: var(--accent);
  color: #fff;
  padding: 7px 14px;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { filter: brightness(1.12); }
.btn:disabled { opacity: 0.45; cursor: default; }
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.ghost:hover { background: var(--panel2); filter: none; }
.btn.danger { background: var(--err); }
.btn.ok { background: var(--ok); }
.btn.small { padding: 4px 10px; font-size: 12px; }

/* ---------- layout ---------- */
#app-view { display: flex; min-height: 100vh; }

#sidebar {
  width: var(--sidebar-w);
  background: var(--bg2);
  border-right: 1px solid var(--border);
  padding: 16px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.brand { font-size: 16px; font-weight: 700; padding: 6px 10px 18px; letter-spacing: 0.3px; }

.nav-btn {
  text-align: left;
  background: transparent;
  border: none;
  color: var(--muted);
  font: inherit;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
}
.nav-btn:hover { background: var(--panel); color: var(--text); }
.nav-btn.active { background: var(--accent); color: #fff; }

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

#topbar {
  height: var(--topbar-h);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 5;
}
#topbar h2 { margin: 0; font-size: 16px; }
.topbar-right { display: flex; align-items: center; gap: 10px; }
#who { color: var(--muted); }

#content { padding: 20px; flex: 1; }
.view { max-width: 1600px; }

/* ---------- panels ---------- */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 16px;
}
.panel h3 { margin: 0 0 12px; font-size: 14px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }

.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.toolbar .spacer { flex: 1; }
.w-small { width: 120px; }
.w-medium { width: 200px; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.stat-card .num { font-size: 28px; font-weight: 700; }
.stat-card .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
.stat-card.ok .num { color: var(--ok); }
.stat-card.warn .num { color: var(--warn); }
.stat-card.accent .num { color: var(--accent); }

/* ---------- grid ---------- */
.table-wrap { overflow: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; min-width: 1200px; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; white-space: nowrap; }
tbody tr:last-child td { border-bottom: none; }
thead th {
  background: var(--panel2);
  color: var(--muted);
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 1;
}
tbody tr:hover { background: rgba(79, 140, 255, 0.06); }
tbody tr.selected { background: rgba(79, 140, 255, 0.12); }
td .cell-multiline { white-space: pre-wrap; max-width: 240px; overflow: hidden; text-overflow: ellipsis; }
td input.num { width: 80px; padding: 4px 8px; }
td input[type="checkbox"], th input[type="checkbox"] { width: 15px; height: 15px; cursor: pointer; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}
.badge.admin { background: rgba(79, 140, 255, 0.15); color: var(--accent); }
.badge.done { background: rgba(55, 201, 120, 0.15); color: var(--ok); }
.badge.progress { background: rgba(230, 178, 60, 0.15); color: var(--warn); }
.badge.level { background: var(--panel2); color: var(--muted); border: 1px solid var(--border); }

.bulkbar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  background: var(--panel2);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 8px 12px;
  margin-bottom: 12px;
}
.bulkbar .count { font-weight: 600; color: var(--accent); }
.link { background: none; border: none; color: var(--accent); cursor: pointer; font: inherit; padding: 0; text-decoration: underline; }

.pager { display: flex; gap: 8px; align-items: center; padding: 10px 2px; color: var(--muted); }
.pager select { padding: 6px; border-radius: 6px; border: 1px solid var(--border); background: var(--bg2); color: var(--text); }
.pager button:disabled { opacity: 0.4; cursor: default; }

.actions { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.actions input[type="file"] { font-size: 12px; max-width: 170px; }

.tree-row td:first-child { padding-left: calc(10px + var(--indent, 0) * 22px); }

/* ---------- modal ---------- */
#modal-root {
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 12, 0.7);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 16px;
  z-index: 50;
  overflow: auto;
}
.modal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 720px;
  max-width: 100%;
  padding: 20px 22px;
}
.modal.wide { width: 900px; }
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.modal-head h3 { margin: 0; }
.modal-close { background: none; border: none; color: var(--muted); font-size: 20px; cursor: pointer; }
.modal-body { display: flex; flex-direction: column; gap: 12px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.form-grid label { gap: 4px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }

.kv { display: grid; grid-template-columns: 160px 1fr; gap: 4px 12px; font-size: 13px; }
.kv-key { color: var(--muted); }
.kv-val { word-break: break-all; white-space: normal; }

.subpanel { border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; }
.subpanel h4 { margin: 0 0 8px; font-size: 12px; color: var(--muted); text-transform: uppercase; }
.subpanel table { min-width: 0; width: 100%; }
.subpanel th, .subpanel td { padding: 5px 8px; font-size: 12px; }
.subpanel thead th { position: static; }

/* ---------- toast ---------- */
#toast {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 100;
  background: var(--panel2);
  border: 1px solid var(--ok);
  color: var(--text);
  padding: 10px 16px;
  border-radius: 8px;
  max-width: 460px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
}
#toast.err { border-color: var(--err); }

.error { color: var(--err); margin: 0; }
.export-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 12px; }