:root {
  --bg: #f7f7f8;
  --panel: #ffffff;
  --border: #e3e3e8;
  --text: #1d1d1f;
  --muted: #6b6b74;
  --accent: #1f6feb;
  --accent-contrast: #ffffff;
  --danger: #c81e1e;
  --ok: #218838;
  --chart-grid: #e5e5ea;
  --shadow: 0 1px 3px rgba(0,0,0,0.04), 0 2px 12px rgba(0,0,0,0.03);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101014;
    --panel: #1a1a20;
    --border: #2a2a33;
    --text: #f2f2f5;
    --muted: #a0a0ac;
    --accent: #4c8dff;
    --accent-contrast: #0b0b10;
    --danger: #ff6b6b;
    --ok: #4cd380;
    --chart-grid: #2a2a33;
    --shadow: 0 1px 3px rgba(0,0,0,0.2), 0 2px 12px rgba(0,0,0,0.25);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

.app-header {
  padding: 20px 24px 12px;
  border-bottom: 1px solid var(--border);
}
.app-header h1 { margin: 0; font-size: 22px; font-weight: 600; }
.app-header .tagline { margin: 4px 0 0; color: var(--muted); font-size: 14px; }

.app-main {
  display: grid;
  grid-template-columns: minmax(320px, 420px) 1fr;
  gap: 20px;
  padding: 20px;
  max-width: 1400px;
  margin: 0 auto;
}

@media (max-width: 860px) {
  .app-main { grid-template-columns: 1fr; }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow);
}

.panel h2 { margin: 0 0 12px; font-size: 16px; font-weight: 600; }

.depot-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 40px;
}

.empty-hint { color: var(--muted); font-size: 13px; margin: 0; padding: 8px 0; }

.depot-item {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
}
.depot-item .name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
}
.depot-item .name small { color: var(--muted); margin-left: 4px; }
.depot-item .weight-input {
  width: 62px;
  text-align: right;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
}
.depot-item .btn-remove {
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 18px;
  padding: 2px 6px;
  line-height: 1;
  border-radius: 4px;
}
.depot-item .btn-remove:hover { color: var(--danger); background: var(--bg); }

.weights-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 8px 0 12px;
  font-size: 13px;
}
.weights-sum { color: var(--muted); }
.weights-sum.invalid { color: var(--danger); }
.weights-sum.valid { color: var(--ok); }

.btn-link {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  padding: 0;
  font: inherit;
}
.btn-link:hover { text-decoration: underline; }

.search-wrap { position: relative; margin-bottom: 16px; }
#search-input {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
}
#search-input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 4px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
  max-height: 280px;
  overflow-y: auto;
  z-index: 20;
}
.search-result {
  padding: 8px 12px;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: baseline;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.search-result:last-child { border-bottom: none; }
.search-result:hover, .search-result.active { background: var(--bg); }
.search-result .sym { font-weight: 600; color: var(--accent); }
.search-result .nm  { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.search-result .meta { color: var(--muted); font-size: 12px; }

.config-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}
@media (max-width: 480px) {
  .config-grid { grid-template-columns: 1fr; }
}

.config-grid label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  color: var(--muted);
  min-width: 0;
}
.config-grid input {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
  min-width: 0;
  width: 100%;
}

.input-suffix {
  position: relative;
  display: flex;
  align-items: center;
}
.input-suffix input { flex: 1; padding-right: 28px; }
.input-suffix .suffix {
  position: absolute;
  right: 10px;
  color: var(--muted);
  font-size: 13px;
  pointer-events: none;
}

.benchmarks {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  margin: 0 0 16px;
}
.benchmarks legend { padding: 0 6px; font-size: 13px; color: var(--muted); }
.benchmark-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 12px;
}
.benchmark-list label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  cursor: pointer;
}

.actions {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.btn-primary {
  flex: 1;
  padding: 10px 16px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-contrast);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary:hover:not(:disabled) { filter: brightness(1.08); }

.btn-ghost {
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  font: inherit;
  cursor: pointer;
}
.btn-ghost:hover { background: var(--bg); }

.status {
  min-height: 20px;
  font-size: 13px;
  color: var(--muted);
}
.status.error { color: var(--danger); }
.status.warn  { color: #b07b00; }
.status.loading::after {
  content: "";
  display: inline-block;
  width: 10px; height: 10px;
  margin-left: 6px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

.chart-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
}
@media (min-width: 861px) {
  .chart-wrap { min-height: 320px; }
}

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  margin: 20px 0 0;
  padding: 16px;
  border-top: 1px solid var(--border);
}
.metrics > div { margin: 0; }
.metrics dt {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.metrics dd {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.metrics dd.positive { color: var(--ok); }
.metrics dd.negative { color: var(--danger); }

.app-footer {
  max-width: 1400px;
  margin: 0 auto;
  padding: 16px 24px 32px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}