/* Tools Hub — hero base in pages.css */
.tools-hero p { font-size: 1.05rem; }

.tools-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 2rem;
  align-items: start;
}

.tools-nav {
  position: sticky;
  top: calc(var(--header-height) + 1.5rem);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.tools-nav__item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  background: white;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-gray-700);
  cursor: pointer;
  transition: all var(--transition);
  text-align: left;
}

.tools-nav__item:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.tools-nav__item--active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.tools-nav__icon { font-size: 1.25rem; flex-shrink: 0; }

.tool-panel { display: none; }
.tool-panel--active { display: block; animation: fadeIn 0.35s ease; }

.tool-card {
  background: white;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.tool-card__header {
  padding: 1.75rem 2rem;
  border-bottom: 1px solid var(--color-gray-100);
}

.tool-card__header h2 { font-size: 1.35rem; margin-bottom: 0.35rem; }
.tool-card__header p { color: var(--color-gray-500); font-size: 0.9rem; margin: 0; }

.tool-card__body { padding: 2rem; }

.tool-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.tool-result {
  background: linear-gradient(135deg, var(--color-gray-50), white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.tool-result__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.5rem;
}

.tool-result__value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.tool-result__value--accent { color: var(--color-accent); }

.tool-result__label {
  font-size: 0.8rem;
  color: var(--color-gray-500);
  margin-top: 0.35rem;
  font-weight: 500;
}

.tool-result__note {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-gray-200);
  font-size: 0.85rem;
  color: var(--color-gray-500);
}

.tool-result__note strong { color: var(--color-gray-700); }

.tools-callout {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  background: rgba(242, 101, 34, 0.12);
  border: 1px solid rgba(242, 101, 34, 0.35);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--color-gray-800);
  line-height: 1.5;
}

.tools-callout strong {
  display: block;
  font-size: 1rem;
  color: var(--color-accent);
  letter-spacing: 0.04em;
  margin-bottom: 0.25rem;
}

.tools-callout__icon {
  flex-shrink: 0;
  font-size: 1.5rem;
  line-height: 1;
}

.tool-result--economia .tool-result__grid--economia {
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.tool-result__cell--highlight {
  padding: 1.5rem 1.75rem;
  background: white;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg);
  min-width: 0;
}

.tool-result__cell--highlight .tool-result__value {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  word-break: break-word;
}

.tool-result__cell--highlight .tool-result__label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-gray-700);
}

.tool-result__cell--accent-highlight {
  border-color: var(--color-accent);
}

.tool-result__cell--accent-highlight .tool-result__value {
  color: var(--color-accent);
}

/* Range slider */
.range-wrap { margin-top: 0.5rem; }

.range-value {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-gray-500);
  margin-bottom: 0.5rem;
}

.range-value strong { color: var(--color-primary); font-size: 1.1rem; }

input[type="range"] {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--color-gray-200);
  appearance: none;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(242,101,34,0.4);
}

/* IEEE bars */
.harmonic-bars { display: flex; flex-direction: column; gap: 0.75rem; margin-top: 1.5rem; }

.harmonic-bar {
  display: grid;
  grid-template-columns: 120px 1fr 50px;
  align-items: center;
  gap: 1rem;
}

.harmonic-bar__label { font-size: 0.8rem; font-weight: 600; color: var(--color-gray-600); }

.harmonic-bar__track {
  height: 28px;
  background: var(--color-gray-100);
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
}

.harmonic-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-sm);
  transition: width 0.5s ease;
  display: flex;
  align-items: center;
  padding-left: 0.5rem;
}

.harmonic-bar__limit {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  text-align: right;
}

/* Data table modern */
.data-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.data-table th {
  background: var(--color-primary);
  color: white;
  padding: 0.85rem 1rem;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}

.data-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-gray-100);
}

.data-table tr:hover td { background: var(--color-gray-50); }

.data-table tr:last-child td { border-bottom: none; }

.search-bar {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.search-bar .form-input { max-width: 320px; }

.filter-pills {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.filter-pill {
  padding: 0.4rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid var(--color-gray-300);
  border-radius: 100px;
  background: white;
  cursor: pointer;
  transition: all var(--transition);
}

.filter-pill--active, .filter-pill:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* Resource cards on index */
.resource-card--link {
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.resource-card--link:hover {
  transform: translateY(-4px);
}

.resource-card__cta {
  margin-top: 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
}

/* Mini calculator on index */
.mini-calc {
  background: white;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin-top: 2.5rem;
}

.mini-calc__result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  color: white;
}

.mini-calc__result-value {
  font-size: 2.25rem;
  font-weight: 800;
}

/* Checklist */
.checklist-progress {
  background: var(--color-gray-100);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
}

.checklist-progress__bar {
  height: 8px;
  background: var(--color-gray-200);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 0.75rem;
}

.checklist-progress__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  border-radius: 4px;
  transition: width 0.4s ease;
}

.checklist-items { display: flex; flex-direction: column; gap: 0.5rem; }

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1rem 1.15rem;
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
}

.checklist-item:hover { border-color: var(--color-primary); }

.checklist-item--checked {
  background: rgba(16, 185, 129, 0.06);
  border-color: var(--color-success);
}

.checklist-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-success);
  flex-shrink: 0;
  cursor: pointer;
}

.checklist-item__text { flex: 1; font-size: 0.9rem; }

.checklist-item__category {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 0.2rem;
}

.checklist-item__badge {
  font-size: 0.65rem;
  padding: 0.15rem 0.5rem;
  background: var(--color-primary);
  color: white;
  border-radius: 100px;
  font-weight: 600;
  flex-shrink: 0;
}

.checklist-status {
  margin-top: 1.5rem;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
}

.checklist-status--low { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.checklist-status--mid { background: #fffbeb; color: #92400e; border: 1px solid #fde68a; }
.checklist-status--high { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }

@media (max-width: 900px) {
  .tools-layout { grid-template-columns: 1fr; }
  .tools-nav {
    position: static;
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: 0.5rem;
  }
  .tools-nav__item { white-space: nowrap; flex-shrink: 0; }
  .tool-result--economia .tool-result__grid--economia {
    grid-template-columns: 1fr;
  }
}