@import url("../styles.css");

main {
  display: grid;
  grid-template-columns: minmax(320px, 360px) 1fr;
  gap: 18px;
  grid-template-areas: "controls plot";
}

@media (max-width: 900px) {
  main {
    grid-template-columns: 1fr;
    grid-template-areas:
      "controls"
      "plot";
  }
}

.plot-panel {
  grid-area: plot;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  padding: 12px;
}
.plot-panel .fit-card {
  margin-top: 18px;
}
.controls-panel { grid-area: controls; }

#plot {
  width: 100%;
  height: 420px;
  border-radius: 12px;
  overflow: hidden;
}

.control-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-top: 16px;
}

.control-card {
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 10px 12px;
  background: color-mix(in srgb, var(--panel) 90%, var(--bg));
  height: 100%;
}
.control-card summary {
  cursor: pointer;
  list-style: none;
  font-weight: 500;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.control-card summary::marker { content: ""; }
.control-card summary::-webkit-details-marker { display: none; }
.control-card summary::after {
  content: "▾";
  font-size: 11px;
  color: var(--muted);
  transition: transform 0.2s ease;
}
.control-card[open] summary::after { transform: rotate(180deg); }
.control-card summary + * { margin-top: 8px; }

.fit-card {
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  margin-top: 18px;
  background: color-mix(in srgb, var(--panel) 85%, var(--bg));
  padding: 0 0 12px;
}
.fit-card summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.fit-card summary::-webkit-details-marker { display: none; }
.fit-card summary::after {
  content: "▾";
  font-size: 12px;
  color: var(--muted);
  transition: transform 0.2s ease;
}
.fit-card[open] summary::after {
  transform: rotate(180deg);
}
.fit-card[open] summary { border-bottom-color: color-mix(in srgb, var(--border-soft) 60%, transparent); }
.fit-card__summary h3 {
  margin: 0;
  font-size: 15px;
  color: var(--ink);
}
.fit-card__summary p {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--muted);
}
.fit-card form {
  padding: 12px 16px 0;
}

.whatif-row {
  margin-top: 6px;
  align-items: center;
}
.ghost {
  border: 1px solid var(--border-soft);
  background: transparent;
  color: var(--muted);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
}
.ghost:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.action-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.delta-summary {
  margin-top: 16px;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 12px 14px;
  background: color-mix(in srgb, var(--panel) 80%, var(--bg));
}
.delta-summary h3 {
  margin: 0 0 6px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.delta-summary__body {
  font-size: 13px;
  line-height: 1.5;
}
.delta-summary__body ul {
  margin: 0;
  padding-left: 20px;
}
.delta-summary__body li { margin-bottom: 4px; }

.dual-slider {
  position: relative;
  margin: 8px 0 22px;
  height: 34px;
}
.dual-slider input[type=range] {
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  width: 100%;
  background: var(--track-neutral);
  border-radius: 999px;
  position: absolute;
  top: 14px;
  left: 0;
  margin: 0;
  pointer-events: none;
  border: none;
}
.dual-slider input::-webkit-slider-thumb {
  -webkit-appearance: none;
  pointer-events: all;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--thumb-border);
  background: var(--track-muted);
  cursor: pointer;
  transition: background 0.15s ease;
}
.dual-slider input.dual-slider__base::-webkit-slider-thumb {
  background: var(--blue);
}
.dual-slider input.dual-slider__base::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--thumb-border);
  background: var(--blue);
}
.dual-slider input::-moz-range-thumb {
  pointer-events: all;
  cursor: pointer;
}
.dual-slider__overlay {
  opacity: 0;
  z-index: 2;
  background: transparent;
}
.dual-slider input.dual-slider__overlay::-webkit-slider-thumb {
  background: var(--track-muted);
}
.dual-slider input.dual-slider__overlay::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--thumb-border);
  background: var(--track-muted);
}
.dual-slider input.dual-slider__overlay.active-thumb::-webkit-slider-thumb {
  background: var(--orange);
}
.dual-slider input.dual-slider__overlay.active-thumb::-moz-range-thumb {
  background: var(--orange);
}
body.whatif-mode .dual-slider__overlay {
  opacity: 1;
}
.dual-slider__delta {
  position: absolute;
  top: 16px;
  height: 4px;
  border-radius: 999px;
  background: var(--orange);
  opacity: 0;
  display: none;
  z-index: 1;
}
.dual-slider__delta.reverse {
  background: var(--green);
}
body.whatif-mode .dual-slider__delta {
  display: block;
  opacity: 0.85;
}

.whatif-val {
  display: none;
  font-size: 12px;
  color: var(--muted);
  margin: 4px 0 6px;
  line-height: 1.4;
}
body.whatif-mode .whatif-val {
  display: block;
}
.whatif-val__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.whatif-val__delta {
  font-size: 12px;
  color: var(--muted);
}
.whatif-val__delta .delta {
  color: var(--orange);
  font-weight: 600;
}
.delta-label {
  font-weight: 600;
  cursor: help;
  border-bottom: 1px dotted var(--muted);
}
.whatif-val__value {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--orange);
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.whatif-val__value.is-off {
  color: var(--muted);
}

.fit-modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(6, 8, 12, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 1000;
}
.fit-modal.is-open {
  opacity: 1;
  pointer-events: all;
}
.fit-modal__backdrop {
  position: absolute;
  inset: 0;
}
.fit-modal__panel {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  width: min(520px, calc(100% - 32px));
  padding: 18px;
  box-shadow: 0 18px 48px rgba(0,0,0,0.45);
}
.fit-modal__panel header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.fit-modal form {
  position: relative;
  z-index: 1;
}
.fit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin: 16px 0;
}
.fit-group {
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  padding: 10px 12px 4px;
  margin: 12px 0;
}
.fit-group legend {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  padding: 0 6px;
}
.fit-grid label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
}
.fit-grid input {
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  background: var(--bg);
  color: var(--ink);
  padding: 6px 8px;
  font-size: 14px;
}
.fit-grid input:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 1px;
}
.fit-status {
  min-height: 18px;
  margin-bottom: 12px;
}
.fit-option {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.4;
  margin-bottom: 12px;
}
.fit-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}