/**
 * Left tool rail — shared with Cyturus_CRT_ROI_Calculator.html
 * Load before page <style> so overrides (e.g. .gap-target-host) still win.
 */
.main {
  flex: 1;
  display: grid;
  /* +10px vs legacy 300px — room for long category labels (e.g. Intl Mgmt Standards); tablet range in media query */
  grid-template-columns: 310px minmax(0, 1fr);
  overflow: hidden;
}
.left-panel {
  background: var(--navy2);
  border-right: 1px solid var(--border2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.left-top {
  padding: 12px 14px 0;
  flex-shrink: 0;
}
.left-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 0 16px 16px;
}
.left-scroll::-webkit-scrollbar {
  width: 6px;
}
.left-scroll::-webkit-scrollbar-thumb {
  background: var(--border2);
  border-radius: 4px;
}
.left-bottom {
  flex-shrink: 0;
  padding: 14px 16px;
  border-top: 1px solid var(--border2);
  background: var(--navy2);
}
.left-panel .panel-label {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 6px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--border);
}
.left-panel .fw-search input,
.left-panel input.fw-search-input {
  width: 100%;
  background: var(--navy3);
  border: 1px solid var(--border2);
  color: var(--text);
  font-family: var(--outfit);
  font-size: 13px;
  padding: 6px 9px;
  border-radius: var(--r);
  outline: none;
  transition: border 0.15s;
  margin-bottom: 6px;
}
.left-panel .fw-search input:focus,
.left-panel input.fw-search-input:focus {
  border-color: var(--amber);
}
.left-panel .fw-search input::placeholder,
.left-panel input.fw-search-input::placeholder {
  color: var(--text3);
}
.left-panel .fw-category {
  margin-bottom: 3px;
}
.left-panel .fw-cat-label {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text3);
  padding: 5px 7px;
  display: flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  border-radius: 4px;
  transition: background 0.15s;
  user-select: none;
}
.left-panel .fw-cat-label:hover {
  background: var(--border);
}
.left-panel .fw-cat-arrow {
  transition: transform 0.2s;
  font-size: 9px;
  display: inline-block;
}
.left-panel .fw-category.open .fw-cat-arrow {
  transform: rotate(90deg);
}
.left-panel .fw-cat-count {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text3);
  margin-left: auto;
}
.left-panel .fw-items {
  display: none;
  flex-direction: column;
  gap: 1px;
  padding: 1px 0 3px;
}
.left-panel .fw-category.open .fw-items {
  display: flex;
}
.left-panel .fw-item {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  padding: 5px 7px;
  border-radius: var(--r);
  cursor: pointer;
  transition: background 0.1s;
  font-size: 13px;
  color: var(--text2);
}
.left-panel .fw-item:hover {
  background: var(--border);
  color: var(--text);
}
.left-panel .fw-item.selected {
  background: rgba(245, 167, 0, 0.09);
  color: var(--amber);
}
.left-panel .fw-check {
  width: 12px;
  height: 12px;
  border: 1px solid var(--border2);
  border-radius: 3px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  transition: all 0.15s;
  align-self: center;
}
.left-panel .fw-item.selected .fw-check {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--navy);
}
.left-panel .fw-item-reqs {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text3);
  margin-left: auto;
  flex-shrink: 0;
  align-self: center;
}
.left-panel .selected-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
  min-height: 16px;
  margin-bottom: 6px;
}
.left-panel .chip {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: rgba(245, 167, 0, 0.09);
  border: 1px solid rgba(245, 167, 0, 0.22);
  color: var(--amber);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  padding: 2px 7px;
  border-radius: 20px;
  cursor: pointer;
}
.left-panel .chip:hover {
  background: rgba(245, 167, 0, 0.18);
}
.left-panel .chip-x {
  opacity: 0.6;
}
.left-panel .no-sel {
  font-size: 12px;
  color: var(--text3);
  font-style: italic;
}
.left-panel .input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.left-panel .inp-row {
  margin-bottom: 10px;
}
.left-panel .inp-row label {
  font-size: 12px;
  color: var(--text2);
  display: block;
  margin-bottom: 3px;
  font-weight: 500;
}
.left-panel .inp-row input,
.left-panel .inp-row select {
  width: 100%;
  background: var(--navy3);
  border: 1px solid var(--border2);
  color: var(--text);
  font-family: var(--outfit);
  font-size: 14px;
  padding: 6px 10px;
  border-radius: var(--r);
  outline: none;
  transition: border 0.15s;
}
.left-panel .inp-row input:focus,
.left-panel .inp-row select:focus {
  border-color: var(--amber);
}
.left-panel .inp-row select option {
  background: var(--navy3);
  padding: 3px 6px;
}
.left-panel .inp-row select[multiple] {
  height: 110px;
}
.left-panel .sel-count {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  margin-bottom: 8px;
  text-align: center;
}

/* Grid child scroll fix — same on every tool page using .main */
.main > .right-panel {
  min-height: 0;
}

/**
 * Responsive layout — same breakpoints as product nav (1099 / 699).
 * Tablet: narrower rail; phone: stacked rail + content, capped rail height.
 */
@media (max-width: 1099px) {
  .main {
    /* Same +10px headroom as desktop rail; min stays tight for narrow tablets */
    grid-template-columns: minmax(220px, 270px) minmax(0, 1fr);
  }
}

@media (max-width: 699px) {
  .main {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, min(42vh, 340px)) minmax(0, 1fr);
  }
  .left-panel {
    border-right: none;
    border-bottom: 1px solid var(--border2);
    min-height: 0;
  }
  .left-top {
    padding: 12px 14px 0;
  }
  .left-scroll {
    padding: 0 14px 12px;
  }
  .left-bottom {
    padding: 12px 14px;
  }
}

@media (max-width: 480px) {
  .main {
    /* Tighter rail cap so more right-panel content is visible above fold */
    grid-template-rows: minmax(0, min(36vh, 260px)) minmax(0, 1fr);
  }
  .left-top {
    padding: 10px 12px 0;
  }
  .left-scroll {
    padding: 0 12px 10px;
  }
  .left-bottom {
    padding: 10px 12px;
  }
  /* Compact category labels on tiny screens */
  .left-panel .fw-cat-label {
    font-size: 15px;
  }
  .left-panel .fw-item {
    font-size: 12px;
    padding: 5px 6px;
  }
}