/* Lumenear — UI Kit styles
 * Pairs with kit-components.jsx. Uses tokens from styles.css (:root).
 * Mobile-first; layout helpers collapse below 640px.
 */

/* ── Screen-reader only ── */
.kit-sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}

/* ── Spinner ── */
.kit-spinner { display: inline-flex; align-items: center; justify-content: center; color: currentColor; }
.kit-spinner svg { display: block; }
.kit-spinner-track { stroke: currentColor; opacity: .2; }
.kit-spinner-head { stroke: currentColor; transform-origin: 12px 12px; animation: kit-spin .7s linear infinite; }
@keyframes kit-spin { to { transform: rotate(360deg); } }

/* ── Skeleton ── */
.kit-skeleton-group { display: flex; flex-direction: column; gap: 8px; width: 100%; }
.kit-skeleton {
  display: block;
  background: linear-gradient(90deg, var(--surface) 0%, var(--raised) 50%, var(--surface) 100%);
  background-size: 200% 100%;
  animation: kit-shimmer 1.4s var(--ease) infinite;
}
@keyframes kit-shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ── Button additions (extends .btn from styles.css) ── */
.kit-btn { position: relative; }
.kit-btn-content { display: inline-flex; align-items: center; gap: 6px; }
.kit-btn-icon { display: inline-flex; align-items: center; }
.kit-btn.is-loading .kit-btn-content { opacity: 0; }   /* keep width, hide label */
.kit-btn.is-loading .kit-btn-spinner {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}

/* ── NumberStepper ── */
.kit-stepper {
  display: inline-flex; align-items: stretch;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); overflow: hidden; width: 100%; max-width: 160px;
}
.kit-stepper.is-disabled { opacity: .45; pointer-events: none; }
.kit-stepper-btn {
  width: 34px; flex-shrink: 0; border: none; background: var(--raised);
  color: var(--text-sec); font-size: 16px; line-height: 1; cursor: pointer;
  transition: background .15s var(--ease), color .15s var(--ease);
}
.kit-stepper-btn:hover:not(:disabled) { background: var(--border-hover); color: var(--text); }
.kit-stepper-btn:disabled { opacity: .35; cursor: default; }
.kit-stepper-btn.plus:hover:not(:disabled) { color: var(--accent); }
.kit-stepper-input {
  flex: 1; min-width: 0; width: 100%; text-align: center;
  border: none; background: transparent; color: var(--text);
  font-family: var(--font-mono); font-size: 13px; padding: 8px 4px;
  -moz-appearance: textfield;
}
.kit-stepper-input::-webkit-outer-spin-button,
.kit-stepper-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.kit-stepper:focus-within { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(200,184,154,.12); }
.kit-stepper-input:focus { outline: none; }
.kit-stepper-sm .kit-stepper-btn { width: 28px; font-size: 14px; }
.kit-stepper-sm .kit-stepper-input { padding: 5px 2px; font-size: 12px; }

/* ── Field extras ── */
.kit-required { color: var(--accent); }
.kit-field-hint { font-size: 10px; color: var(--text-sec); margin-top: 4px; line-height: 1.4; }
.kit-field-error { font-size: 11px; color: var(--alert); margin-top: 4px; font-weight: 500; }
.kit-field.has-error .field-input,
.kit-field.has-error .field-select { border-color: var(--alert); }
.kit-field.has-error .field-input:focus,
.kit-field.has-error .field-select:focus { box-shadow: 0 0 0 2px rgba(184,92,56,.15); }

/* ── Meter ── */
.kit-meter { width: 100%; }
.kit-meter-label {
  font-size: 11px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 1px; color: var(--text-sec); margin-bottom: 8px;
}
.kit-meter-track {
  position: relative; height: 8px; border-radius: 4px;
  background: var(--surface); border: 1px solid var(--border);
}
.kit-meter-zone {
  position: absolute; top: 0; bottom: 0;
  background: rgba(107,143,113,.25); border-radius: 4px;
}
.kit-meter-marker {
  position: absolute; top: 50%; width: 3px; height: 16px;
  border-radius: 2px; transform: translate(-50%, -50%);
  transition: left .5s var(--ease);
}

/* ── EmptyState ── */
.kit-empty {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  gap: 6px; padding: 40px 24px; color: var(--text-sec);
}
.kit-empty-icon { opacity: .5; margin-bottom: 4px; }
.kit-empty-title { font-size: 14px; font-weight: 600; color: var(--text); }
.kit-empty-desc { font-size: 12px; line-height: 1.5; max-width: 320px; }
.kit-empty-action { margin-top: 12px; }

/* ── Quote request flow ── */
.quote-flow { display: block; }
.quote-flow .field { margin-bottom: 14px; }
.quote-success {
  display: flex; align-items: flex-start; gap: 14px;
  background: rgba(107,143,113,.1); border: 1px solid var(--ok);
  border-radius: var(--radius); padding: 18px 20px; margin-top: 8px;
}
.quote-success-mark {
  flex-shrink: 0; width: 32px; height: 32px; border-radius: 50%;
  background: var(--ok); color: #fff; font-size: 18px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.quote-success-title { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.quote-success-text { font-size: 13px; color: var(--text-sec); line-height: 1.6; }

/* ── Product specs button + row ── */
.product-row { display: flex; align-items: center; gap: 8px; margin-top: 10px; }
.product-specs-btn {
  flex-shrink: 0; display: inline-flex; align-items: center; gap: 5px;
  padding: 7px 12px; border-radius: var(--radius-sm);
  border: 1px solid var(--accent-dim); background: rgba(200, 184, 154, .08);
  color: var(--accent); font-size: 11px; font-weight: 600;
  font-family: var(--font-ui); cursor: pointer; transition: all .15s var(--ease);
}
.product-specs-btn:hover { color: #111; border-color: var(--accent); background: var(--accent); }
.product-specs-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ── Product detail modal ── */
.kit-modal-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,.72);
  display: flex; align-items: center; justify-content: center; padding: 20px;
  animation: kit-fade .15s var(--ease);
}
@keyframes kit-fade { from { opacity: 0; } to { opacity: 1; } }
.kit-modal {
  position: relative; display: flex; flex-direction: row;
  width: 100%; max-width: 680px; max-height: 88vh; overflow: hidden;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: 0 24px 60px rgba(0,0,0,.5);
}
.kit-modal-close {
  position: absolute; top: 10px; right: 10px; z-index: 2;
  width: 28px; height: 28px; border-radius: 50%; border: none;
  background: rgba(20,20,20,.6); color: var(--text); font-size: 18px;
  line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center;
}
.kit-modal-close:hover { background: var(--raised); }
.kit-modal-close:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
/* Display niche: product shown whole (contain), never cropped */
.kit-modal-media {
  flex: 0 0 260px; align-self: stretch;
  background: var(--bg); border-left: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.kit-modal-media.is-empty { display: none; }
.kit-modal-media img { max-width: 100%; max-height: 100%; object-fit: contain; }
.kit-modal-body { flex: 1 1 auto; min-width: 0; padding: 22px 22px 22px; overflow-y: auto; }
.kit-modal-title { font-size: 19px; font-weight: 500; color: var(--text); margin-bottom: 4px; }
.kit-modal-note { font-size: 12px; color: var(--text-sec); margin-bottom: 14px; line-height: 1.5; }
.kit-spec-list { margin: 8px 0 18px; }
.kit-spec-row {
  display: flex; justify-content: space-between; gap: 16px;
  padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 12px;
}
.kit-spec-row dt { color: var(--text-sec); flex-shrink: 0; }
.kit-spec-row dd { color: var(--text); text-align: right; font-family: var(--font-mono); }
.kit-modal-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.kit-modal-actions .btn { text-decoration: none; }

/* ── Responsive: collapse fixed layouts on small screens ── */
@media (max-width: 640px) {
  .split-layout { grid-template-columns: 1fr; }
  .split-sidebar { border-left: none; border-top: 1px solid var(--border); }
  .product-grid { grid-template-columns: 1fr; }
  .preset-grid { grid-template-columns: repeat(2, 1fr); }
  .dim-grid { grid-template-columns: 1fr; }
  .kit-stepper { max-width: none; }
  /* Let horizontally-tight chrome scroll instead of overflowing */
  .progress-bar { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .filter-tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  /* Stack the result hero (before → after) vertically */
  .result-hero-v2 { flex-direction: column; gap: 12px; }
  .rh2-arrow { transform: rotate(90deg); }
  /* Product modal: stack image on top, specs below */
  .kit-modal { flex-direction: column-reverse; max-width: 440px; }
  .kit-modal-media {
    flex: 0 0 200px; border-left: none; border-bottom: 1px solid var(--border);
  }
  /* Quote form to single column */
  .quote-flow > div[style*="grid-template-columns"] { grid-template-columns: 1fr !important; }
  /* Report form two-up → single column */
  .step-content .no-print > div[style*="grid-template-columns"] { grid-template-columns: 1fr !important; }
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  .kit-spinner-head { animation-duration: 1.4s; }   /* keep slow rotation as the only motion cue */
  .kit-skeleton { animation: none; background: var(--raised); }
  .kit-meter-marker { transition: none; }
}