/* Renova Lighting Calculators */
.lt-section { padding: 44px 0 72px; }
.lt-panel[hidden] { display: none !important; }
.lt-topbar { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.lt-tabs { display: flex; flex-wrap: wrap; gap: 6px; border-bottom: 2px solid var(--border); flex: 1 1 auto; }
.lt-tab {
  appearance: none; background: transparent; border: 0; border-bottom: 3px solid transparent; margin-bottom: -2px;
  padding: 12px 18px; font: 700 0.95rem "Inter", sans-serif; color: var(--gray-600); cursor: pointer; border-radius: 6px 6px 0 0;
}
.lt-tab:hover { color: var(--navy-900); background: var(--gray-100); }
.lt-tab[aria-selected="true"] { color: var(--navy-950); border-bottom-color: var(--amber-500); }
.lt-tab:focus-visible { outline: 3px solid var(--blue-600); outline-offset: 1px; }
.lt-units { font-size: 0.85rem; color: var(--gray-600); display: flex; gap: 8px; align-items: center; }
.lt-units select { padding: 7px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); font: inherit; color: var(--text); background: var(--white); }
.lt-intro { max-width: 820px; color: var(--gray-800); margin: 0 0 22px; }

.lt-layout { display: grid; grid-template-columns: minmax(300px, 380px) 1fr; gap: 28px; align-items: start; }
.lt-controls { background: var(--gray-100); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 18px 20px 22px; }
.lt-controls h3 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--navy-700); margin: 18px 0 8px; }
.lt-controls h3:first-child { margin-top: 0; }
.lt-sec { margin-bottom: 4px; }
.lt-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 12px; margin-top: 10px; }
.lt-field { display: flex; flex-direction: column; gap: 4px; font-size: 0.82rem; min-width: 0; }
.lt-field.lt-wide { grid-column: 1 / -1; }
.lt-label { font-weight: 600; color: var(--navy-900); }
.lt-unit { font-weight: 500; color: var(--gray-600); }
.lt-field input[type="number"], .lt-field select {
  width: 100%; padding: 8px 10px; border: 1px solid var(--gray-200); border-radius: var(--radius-sm);
  font: inherit; font-size: 0.92rem; background: var(--white); color: var(--text); min-width: 0;
}
.lt-field input:focus-visible, .lt-field select:focus-visible { outline: 3px solid var(--blue-500); outline-offset: 0; border-color: var(--blue-600); }
.lt-field.lt-check { flex-direction: row; align-items: center; gap: 8px; grid-column: 1 / -1; }
.lt-field.lt-check .lt-label { order: 2; }
.lt-help { color: var(--gray-600); font-size: 0.74rem; line-height: 1.3; }
.lt-note { font-size: 0.8rem; color: var(--gray-600); margin: 6px 0 4px; line-height: 1.45; }
.lt-link { font-size: 0.82rem; font-weight: 600; }
.lt-subbox { margin-top: 8px; padding-top: 4px; border-top: 1px dashed var(--gray-400); }
.lt-sec > .lt-field.lt-wide { margin-top: 8px; }

.lt-results { min-width: 0; }
.lt-stats { display: grid; gap: 10px; margin-bottom: 14px; }
.lt-statrow { display: grid; grid-template-columns: repeat(auto-fill, minmax(132px, 1fr)); gap: 10px; }
.lt-statrow-t { grid-column: 1 / -1; font: 800 0.8rem "Manrope", sans-serif; color: var(--navy-700); text-transform: uppercase; letter-spacing: 0.08em; }
.lt-stat { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 10px 12px; box-shadow: var(--shadow-sm); min-width: 0; }
.lt-stat-v { font: 800 1.2rem "Manrope", sans-serif; color: var(--navy-950); line-height: 1.2; overflow-wrap: anywhere; }
.lt-stat-l { font-size: 0.74rem; font-weight: 600; color: var(--gray-600); text-transform: uppercase; letter-spacing: 0.04em; margin-top: 2px; }
.lt-stat-s { font-size: 0.72rem; color: var(--gray-600); margin-top: 2px; }
.lt-canvas-wrap { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 10px; overflow: hidden; }
.lt-canvas-wrap canvas { display: block; max-width: 100%; }
.lt-tip { min-height: 1.4em; font-size: 0.8rem; color: var(--navy-700); font-weight: 600; margin-top: 6px; }
.lt-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.lt-disclaimer { margin-top: 44px; padding: 22px 24px; background: var(--gray-100); border-radius: var(--radius-md); border: 1px solid var(--border); }
.lt-disclaimer h3 { font-size: 1rem; margin-bottom: 6px; }
.lt-disclaimer p { font-size: 0.86rem; color: var(--gray-800); max-width: 900px; }
#lt-loaderr { margin-bottom: 12px; }

@media (max-width: 900px) {
  .lt-layout { grid-template-columns: 1fr; }
  .lt-tab { padding: 10px 12px; font-size: 0.88rem; }
}
@media (max-width: 460px) { .lt-fields { grid-template-columns: 1fr; } }

@media print {
  .site-header, .site-footer, .search-overlay, .lt-topbar, .lt-controls, .lt-actions, .lt-hero, .skip-link, .lt-disclaimer p a { display: none !important; }
  .lt-layout { display: block; }
  .lt-section { padding: 0; }
  .lt-panel[hidden] { display: none !important; }
  .lt-stat { box-shadow: none; break-inside: avoid; }
}