:root {
  color-scheme: light;
  --bg: #f5f6f8;
  --fg: #1c1f24;
  --muted: #6b7280;
  --border: #d8dbe0;
  --accent: #2563eb;
  --danger: #b91c1c;
  --ok: #15803d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.45;
}

nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.75rem 1.25rem;
  background: #fff;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

nav { gap: 0.25rem; }
nav a { color: var(--fg); text-decoration: none; }
nav a:not(.brand) {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.65rem;
  border-radius: 6px;
}
nav a:not(.brand) svg { width: 16px; height: 16px; flex: none; }
nav a:not(.brand):hover { background: var(--bg); color: var(--accent); }
nav a.active { color: var(--accent); background: #e8eefd; font-weight: 600; }
nav a.brand { display: inline-flex; align-items: center; line-height: 0; margin-right: 0.5rem; }
nav a.brand:hover { opacity: 0.85; }
nav button.btn-secondary { display: inline-flex; align-items: center; gap: 0.4rem; }
nav .spacer { flex: 1; }
nav .who { color: var(--muted); font-size: 0.9rem; }

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

h1 { font-size: 1.4rem; margin-top: 0; }
h2 { font-size: 1.15rem; }

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}

table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.4rem 0.5rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }
tr:last-child td { border-bottom: none; }

label { display: block; margin: 0.6rem 0 0.25rem; font-size: 0.9rem; color: var(--muted); }
input, select, textarea {
  width: 100%;
  padding: 0.45rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
}
textarea { resize: vertical; }

button, .btn {
  display: inline-block;
  margin-top: 0.85rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
}
button:hover, .btn:hover { opacity: 0.9; }
.btn-danger { background: var(--danger); }
.btn-secondary { background: #fff; color: var(--fg); border: 1px solid var(--border); }

.flash-error { color: var(--danger); margin: 0.5rem 0; }
.flash-ok { color: var(--ok); margin: 0.5rem 0; }
.muted { color: var(--muted); }
.money { font-variant-numeric: tabular-nums; }
.tag { display: inline-block; padding: 0.1rem 0.5rem; border-radius: 999px; font-size: 0.78rem; background: #eef2ff; color: var(--accent); }
.tag-danger { background: #fee2e2; color: var(--danger); }

form.inline { display: inline; margin: 0; }

/* Дерево типов задач: компактные строки, сворачиваемые нативно через
   <details>/<summary>, без JS. */
.tree-node { border: none; }
.tree-node > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.25rem;
  border-radius: 6px;
}
.tree-node > summary::-webkit-details-marker { display: none; }
.tree-node > summary::before {
  content: "▸";
  display: inline-block;
  width: 1em;
  color: var(--muted);
  transition: transform 0.15s;
}
.tree-node[open] > summary::before { transform: rotate(90deg); }
.tree-node > summary:hover,
.tree-row:hover { background: var(--bg); }

.tree-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.25rem 0.35rem 1.5rem;
  border-radius: 6px;
}

.tree-children {
  padding-left: 1.15rem;
  margin-left: 0.6rem;
  border-left: 1px solid var(--border);
}

.tree-label { flex: 1; }
.tree-actions { display: flex; gap: 0.25rem; flex: none; }

.btn-icon {
  background: none;
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 1.8rem;
  height: 1.8rem;
  line-height: 1;
  padding: 0;
  margin: 0;
  font-size: 0.85rem;
  cursor: pointer;
}
.btn-icon:hover { background: var(--bg); opacity: 1; }

/* Комбобокс с поиском: свой выпадающий список вместо нативного datalist,
   чтобы гарантировать ширину в размер поля и прокрутку при длинном списке. */
.combobox { position: relative; }
.combobox-list {
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  right: 0;
  z-index: 30;
  max-height: 240px;
  overflow-y: auto;
  margin: 0;
  padding: 0.25rem 0;
  list-style: none;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.15);
}
.combobox-list[hidden] { display: none; }
.combobox-list li {
  padding: 0.45rem 0.6rem;
  cursor: pointer;
  font-size: 0.95rem;
}
.combobox-list li:hover,
.combobox-list li.active { background: var(--bg); }

dialog {
  border: none;
  border-radius: 10px;
  padding: 1.25rem 1.5rem 1.5rem;
  width: min(420px, 90vw);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}
dialog::backdrop { background: rgba(15, 18, 23, 0.45); }
dialog h2 { margin-top: 0; }
dialog form + form { margin-top: 0.75rem; padding-top: 0.75rem; border-top: 1px solid var(--border); }
dialog .dialog-close { margin-top: 1rem; }