:root {
  color-scheme: light;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --bg: #f8f5f5;
  --panel: #ffffff;
  --border: #eadada;
  --text: #231f20;
  --muted: #5f4f50;
  --brand: #c8102e;
  --brand-strong: #a40c25;
  --chip: #fff1f3;
  --ok: #18733a;
  --error: #b91c1c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background: linear-gradient(160deg, #fff 0%, #fff8f8 55%, #f7eeee 100%);
}

.app-header {
  margin: 0;
  padding: 1rem 1.5rem;
  border-bottom: 4px solid var(--brand);
  background: #fff;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  width: 100%;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 0.75rem;
  color: var(--brand);
  font-weight: 700;
}

.app-header h1 {
  margin: 0.25rem 0 0;
  font-size: 1.6rem;
}

.hint {
  margin: 0.45rem 0 0;
  color: var(--muted);
}

.header-chip {
  background: var(--chip);
  border: 1px solid #f3c7cf;
  color: var(--brand-strong);
  border-radius: 999px;
  padding: 0.42rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
}

.container {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 1rem;
}

.panel {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--panel);
  box-shadow: 0 8px 18px rgba(35, 31, 32, 0.06);
}

.controls-panel {
  padding: 1rem;
}

.top-controls {
  margin-bottom: 0.9rem;
}

.config-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
}

.config-grid.split {
  grid-template-columns: 1fr 1fr;
}

.config-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.9rem;
  background: #fff;
}

.config-card h2 {
  margin: 0 0 0.8rem;
  font-size: 1.05rem;
  color: var(--brand-strong);
}

.grid {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.89rem;
  color: var(--muted);
  font-weight: 600;
}

input,
select,
button,
.multi-toggle {
  width: 100%;
  border-radius: 10px;
  border: 1px solid #d7c3c5;
  padding: 0.55rem 0.6rem;
  font-size: 0.95rem;
  color: var(--text);
  background: #fff;
}

.inline-toggle {
  flex-direction: row;
  align-items: center;
  gap: 0.6rem;
}

.inline-toggle input {
  width: auto;
}

.multi-select {
  position: relative;
}

.multi-toggle {
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: flex-start;
}

.multi-menu {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 0.2rem);
  z-index: 8;
  max-height: 230px;
  overflow: auto;
  border: 1px solid #d7c3c5;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
  padding: 0.35rem;
}

.multi-option {
  display: block;
  font-weight: 500;
  padding: 0.35rem 0.3rem;
  text-align: left;
}

.multi-option-content {
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
}

.multi-option input {
  width: auto;
  margin-top: 0.15rem;
}

.multi-empty {
  padding: 0.55rem;
  color: #786a6b;
  font-size: 0.9rem;
}

.selection-summary {
  border: 1px dashed #ebc5cc;
  background: #fffbfb;
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
  font-size: 0.86rem;
  color: #6f5d5f;
}

.actions {
  margin-top: 0.95rem;
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

button {
  border: none;
  background: var(--brand);
  color: #fff;
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.15s ease, background 0.15s ease;
  max-width: 260px;
}

button:hover {
  background: var(--brand-strong);
  transform: translateY(-1px);
}

button.secondary {
  background: #6b5256;
}

#status {
  margin: 0.9rem 0;
  padding: 0.6rem 0.8rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
}

#status.ok {
  color: var(--ok);
}

#status.error {
  color: var(--error);
}

.plot-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: 1fr;
}

.plot-grid.split {
  grid-template-columns: 1fr 1fr;
}

.plot-card {
  min-height: 64vh;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 8px 18px rgba(35, 31, 32, 0.07);
}

.hidden {
  display: none;
}

@media (max-width: 1100px) {
  .config-grid.split,
  .plot-grid.split {
    grid-template-columns: 1fr;
  }

  .app-header {
    flex-direction: column;
  }
}