:root {
  --bg: #0f172a;
  --card: #1e293b;
  --card-2: #273449;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-2: #22c55e;
  --danger: #ef4444;
  --border: #334155;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.4;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--card);
}

header h1 {
  font-size: 1.1rem;
  margin: 0;
}

header a { color: var(--accent); text-decoration: none; }

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
}

.card h2 {
  margin: 0 0 .75rem;
  font-size: 1rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .05em;
}

.grid {
  display: grid;
  gap: 1rem;
}
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 900px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

input, select, button, textarea {
  font: inherit;
  color: var(--text);
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: .5rem .65rem;
  width: 100%;
}

input:focus, select:focus { outline: 1px solid var(--accent); }

label {
  display: block;
  font-size: .8rem;
  color: var(--muted);
  margin-bottom: .25rem;
}

button {
  background: var(--accent);
  color: #001;
  border: none;
  cursor: pointer;
  font-weight: 600;
  width: auto;
  padding: .5rem 1rem;
}
button:hover { filter: brightness(1.1); }
button.secondary { background: var(--card-2); color: var(--text); }
button.danger    { background: var(--danger); color: white; }
button.tiny      { padding: .25rem .5rem; font-size: .85rem; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
}
th, td {
  padding: .45rem .6rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: middle;
}
th { color: var(--muted); font-weight: 500; font-size: .8rem; text-transform: uppercase; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

.kpi { display: flex; flex-direction: column; }
.kpi .v { font-size: 1.6rem; font-weight: 700; }
.kpi .l { font-size: .8rem; color: var(--muted); }

.badge {
  display: inline-block;
  padding: .15rem .5rem;
  font-size: .75rem;
  border-radius: 999px;
  background: var(--card-2);
  color: var(--muted);
}
.badge.ok   { background: #14532d; color: #bbf7d0; }
.badge.warn { background: #78350f; color: #fde68a; }
.badge.bad  { background: #7f1d1d; color: #fecaca; }

.row { display: flex; gap: .5rem; align-items: end; }
.row > * { flex: 1; }
.row > button { flex: 0 0 auto; }

.muted { color: var(--muted); }
.error { color: var(--danger); }
.mt { margin-top: 1rem; }
.hidden { display: none !important; }

/* ============ ВКЛАДКИ ============ */
.tabs {
  display: flex;
  gap: .25rem;
  padding: .5rem 1.5rem 0;
  border-bottom: 1px solid var(--border);
  background: var(--card);
  position: sticky;
  top: 0;
  z-index: 10;
}

.tab {
  background: transparent;
  color: var(--muted);
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  padding: .55rem 1rem;
  cursor: pointer;
  font-weight: 600;
  transition: background .15s, color .15s;
}

.tab:hover {
  color: var(--text);
  background: var(--card-2);
}

.tab.active {
  color: var(--text);
  background: var(--card-2);
  border-color: var(--border);
  border-bottom-color: var(--card-2);
  margin-bottom: -1px;   /* «приклеить» к контенту */
}

.tab-panel {
  animation: fadeIn .15s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: none; }
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
}


.button-like {
  display: inline-block;
  background: var(--card-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: .5rem 1rem;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  transition: filter .15s;
}
.button-like:hover { filter: brightness(1.1); }


/* ============ МОДАЛЬНОЕ ОКНО РЕДАКТИРОВАНИЯ ============ */
#edit-item-modal .card {
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}

#edit-item-modal h2 {
  font-size: 1.1rem;
  color: var(--text);
  text-transform: none;
  letter-spacing: 0;
}