/* ===== Токены ===== */
:root {
  color-scheme: dark;
  --bg: #0d0d0f;
  --surface: #16181d;
  --surface-hover: #1e2128;
  --border: #2a2d35;
  --text: #f2f3f5;
  --text-muted: #9aa0ab;
  --accent: #3987e5;
  --accent-hover: #4d95ea;
  --success: #0ca30c;
  --danger: #d03b3b;
  --warning: #fab219;
  --cat-1: #3987e5; --cat-2: #199e70; --cat-3: #c98500;
  --cat-4: #9085e9; --cat-5: #e66767; --cat-6: #d95926;
  --radius: 8px; --radius-sm: 6px; --gap: 16px;
  --font: system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); font-size: 14px; line-height: 1.5; }
a { color: var(--accent); text-decoration: none; }
h1, h2, h3 { margin: 0; font-weight: 600; }

/* ===== Layout ===== */
.topbar { display: flex; align-items: center; gap: var(--gap); padding: 12px 20px; border-bottom: 1px solid var(--border); background: var(--surface); position: sticky; top: 0; z-index: 20; flex-wrap: wrap; }
.topbar .logo { font-weight: 700; color: var(--accent); font-size: 18px; }
.topbar .spacer { flex: 1; }
.app-nav { display: flex; gap: 4px; overflow-x: auto; }
.nav-btn { background: none; border: none; color: var(--text-muted); padding: 8px 14px; border-radius: var(--radius-sm); cursor: pointer; white-space: nowrap; font-size: 14px; min-height: 40px; }
.nav-btn:hover { background: var(--surface-hover); color: var(--text); }
.nav-btn.active { background: var(--accent); color: #fff; }
.content { padding: 20px; max-width: 1200px; margin: 0 auto; }

/* ===== Card ===== */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: var(--gap); }
.card-header { display: flex; align-items: center; justify-content: space-between; gap: var(--gap); margin-bottom: var(--gap); flex-wrap: wrap; }
.card-title { font-size: 16px; }

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border); background: var(--surface-hover); color: var(--text); padding: 8px 14px; border-radius: var(--radius-sm); cursor: pointer; font-size: 14px; min-height: 40px; }
.btn:hover { border-color: var(--accent); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: none; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-sm { padding: 4px 10px; min-height: 32px; font-size: 13px; }

/* ===== Stat tiles ===== */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: var(--gap); }
.stat-tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.stat-value { font-size: 26px; font-weight: 600; }
.stat-label { color: var(--text-muted); font-size: 13px; margin-top: 4px; }
.stat-delta { font-size: 12px; margin-top: 6px; }
.stat-delta.up { color: var(--success); }
.stat-delta.down { color: var(--danger); }

/* ===== Badges ===== */
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; background: var(--surface-hover); color: var(--text-muted); }
.badge-success { background: rgba(12,163,12,0.15); color: var(--success); }
.badge-warning { background: rgba(250,178,25,0.15); color: var(--warning); }
.badge-danger { background: rgba(208,59,59,0.15); color: var(--danger); }

/* ===== Table ===== */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th { text-align: left; color: var(--text-muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; padding: 8px 12px; border-bottom: 1px solid var(--border); cursor: pointer; user-select: none; }
.data-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); font-variant-numeric: tabular-nums; }
.data-table tr.clickable { cursor: pointer; }
.data-table tr.clickable:hover td { background: var(--surface-hover); }

/* ===== Forms ===== */
.form-field { margin-bottom: var(--gap); }
.form-label { display: block; color: var(--text-muted); font-size: 13px; margin-bottom: 6px; }
.form-control { width: 100%; background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 9px 12px; border-radius: var(--radius-sm); font-size: 14px; min-height: 40px; font-family: inherit; }
.form-control:focus { outline: none; border-color: var(--accent); }
.form-control.invalid { border-color: var(--danger); }
.field-error { color: var(--danger); font-size: 12px; margin-top: 4px; }

/* ===== Modal ===== */
.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; z-index: 40; padding: 20px; }
.modal { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; width: 100%; max-width: 520px; max-height: 90vh; overflow: auto; }
.modal-title { font-size: 16px; margin-bottom: var(--gap); }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: var(--gap); }

/* ===== Toast ===== */
.toast-host { position: fixed; bottom: 20px; right: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 60; }
.toast { background: var(--surface); border: 1px solid var(--border); border-left: 3px solid var(--accent); border-radius: var(--radius-sm); padding: 12px 16px; min-width: 240px; box-shadow: 0 8px 24px rgba(0,0,0,0.4); }
.toast.error { border-left-color: var(--danger); }
.toast.success { border-left-color: var(--success); }

/* ===== States ===== */
.skeleton { background: linear-gradient(90deg, var(--surface) 25%, var(--surface-hover) 50%, var(--surface) 75%); background-size: 200% 100%; animation: sk 1.2s infinite; border-radius: var(--radius-sm); height: 16px; }
@keyframes sk { from { background-position: 200% 0; } to { background-position: -200% 0; } }
.empty-state { color: var(--text-muted); text-align: center; padding: 32px; }
.error-card { border-color: var(--danger); color: var(--text); }

/* ===== Charts ===== */
.chart svg { width: 100%; height: auto; display: block; }
.chart-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; font-size: 13px; color: var(--text-muted); }
.chart-legend .lg { display: inline-flex; align-items: center; gap: 6px; }
.chart-legend .sw { width: 12px; height: 12px; border-radius: 3px; }
.chart-tooltip { position: fixed; pointer-events: none; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 8px 10px; font-size: 12px; z-index: 50; box-shadow: 0 4px 16px rgba(0,0,0,0.5); }

/* ===== Bottom tab bar (mobile) ===== */
.tabbar { display: none; }

/* ===== Responsive ===== */
@media (max-width: 600px) {
  .content { padding: 12px; padding-bottom: 72px; }
  .app-nav { display: none; }
  .tabbar { display: flex; position: fixed; bottom: 0; left: 0; right: 0; background: var(--surface); border-top: 1px solid var(--border); z-index: 30; }
  .tabbar .nav-btn { flex: 1; flex-direction: column; gap: 2px; font-size: 11px; border-radius: 0; padding: 6px 0; }
  .modal-backdrop { align-items: flex-end; padding: 0; }
  .modal { max-width: 100%; border-radius: var(--radius) var(--radius) 0 0; max-height: 92vh; }
  .toast-host { left: 12px; right: 12px; bottom: 76px; }
  .data-table.as-cards thead { display: none; }
  .data-table.as-cards tr { display: block; border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 8px; padding: 8px; }
  .data-table.as-cards td { display: flex; justify-content: space-between; border: none; padding: 4px 6px; }
  .data-table.as-cards td::before { content: attr(data-label); color: var(--text-muted); }
}