.kb-paint-frontend{
  /* Theme tokens */
  --kb-accent: #F54927;
  --kb-accent-2: #f26b52;

  --kb-bg: #f6f7f9;
  --kb-surface: #ffffff;
  --kb-border: rgba(17, 24, 39, 0.12);
  --kb-border-2: rgba(17, 24, 39, 0.08);
  --kb-text: #111827;
  --kb-muted: #6b7280;
  --kb-muted-2: #9ca3af;

  --kb-shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 18px 42px rgba(16, 24, 40, 0.08);
  --kb-radius: 18px;
  --kb-radius-card: 16px;
  --kb-radius-input: 14px;

  --kb-focus: 0 0 0 3px rgba(245, 73, 39, 0.22);

  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--kb-text);
}

/* Base resets (scoped) */
.kb-paint-frontend *,
.kb-paint-frontend *::before,
.kb-paint-frontend *::after{ box-sizing: border-box; }

.kb-paint-frontend h2,
.kb-paint-frontend h3,
.kb-paint-frontend p{ margin: 0; }

/* Shell */
.kb-paint-frontend{
  width: clamp(280px, 92vw, 920px);
  margin: 18px auto;
  padding: 22px;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  background: var(--kb-surface);
  box-shadow: var(--kb-shadow);
}

@media (min-width: 860px){
  .kb-paint-frontend{ padding: 26px; }
}

/* Header */
.kb-paint-frontend .kb-header{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--kb-border-2);
  margin-bottom: 16px;
}

.kb-paint-frontend .kb-logo{
  height: 34px;
  width: auto;
  display: block;
}

.kb-paint-frontend .kb-fav-btn{
  width: 38px !important;
  height: 38px !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 0 !important;
  line-height: 0 !important;
  border-radius: 12px !important;
  border: 1px solid var(--kb-border) !important;
  background: #fff !important;
  cursor: pointer !important;
  transition: transform 120ms ease, box-shadow 160ms ease, background 160ms ease, color 160ms ease !important;
  color: var(--kb-muted-2) !important;
}
:where(.kb-paint-frontend) .kb-fav-btn svg{
  display: block !important;
  margin: 0 !important;
  position: static !important;
}

.kb-paint-frontend .kb-fav-btn svg path{ fill: currentColor !important; }

.kb-paint-frontend .kb-fav-btn:hover{
  transform: translateY(-1px);
  color: var(--kb-accent) !important;
  box-shadow: 0 10px 26px rgba(16, 24, 40, 0.08);
}

.kb-paint-frontend .kb-fav-btn.is-added{
  color: var(--kb-accent) !important;
  border-color: rgba(245, 73, 39, 0.28) !important;
  background: rgba(245, 73, 39, 0.08) !important;
}

.kb-paint-frontend .kb-fav-btn:active{ transform: translateY(0); }

.kb-paint-frontend .kb-fav-btn:focus{ outline: none !important; }
.kb-paint-frontend .kb-fav-btn:focus-visible{ box-shadow: var(--kb-focus); }

/* Title + helper */
.kb-paint-frontend .kb-title{
  font-size: 34px;
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin: 2px 0 8px;
}

@media (min-width: 560px){
  .kb-paint-frontend .kb-title{ font-size: 40px; }
}

.kb-paint-frontend p.helper{
  margin: 0 0 18px;
  color: var(--kb-muted);
  font-size: 15px;
  line-height: 1.55;
}

/* Grid */
.kb-paint-frontend .kb-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 10px;
}

@media (min-width: 860px){
  .kb-paint-frontend .kb-grid{ grid-template-columns: 1fr 1fr; }
}

/* Cards / panels */
.kb-paint-frontend .kb-panel{
  background: var(--kb-surface);
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-card);
  padding: 18px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}

.kb-paint-frontend .kb-panel-title{
  font-size: 16px;
  font-weight: 800;
  margin: 0 0 14px;
}

/* Field */
.kb-paint-frontend .kb-field + .kb-field{ margin-top: 12px; }
.kb-paint-frontend .kb-toggle + .kb-field{ margin-top: 12px; }
.kb-paint-frontend .kb-option + .kb-option{ margin-top: 12px; }

.kb-paint-frontend label{
  display: block;
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--kb-text);
}

.kb-paint-frontend input[type="number"],
.kb-paint-frontend select,
.kb-paint-frontend textarea{
  width: 100%;
  border-radius: var(--kb-radius-input);
  border: 1px solid var(--kb-border);
  background: #fff;
  color: var(--kb-text);
  outline: none;
  padding: 10px 12px;
  font-size: 15px;
  font-weight: 600;
  transition: box-shadow 160ms ease, border-color 160ms ease;
}

.kb-paint-frontend input[type="number"],
.kb-paint-frontend select{ height: 44px; }

.kb-paint-frontend textarea{ min-height: 110px; resize: vertical; }

.kb-paint-frontend input[type="number"]:focus,
.kb-paint-frontend select:focus,
.kb-paint-frontend textarea:focus{
  border-color: rgba(245, 73, 39, 0.65);
  box-shadow: var(--kb-focus);
}

.kb-paint-frontend input[type="number"]::placeholder,
.kb-paint-frontend textarea::placeholder{ color: var(--kb-muted-2); }

.kb-paint-frontend select{ appearance: none; }

/* Checkbox row */
.kb-paint-frontend .kb-toggle{ margin-top: 14px; }

.kb-paint-frontend .kb-inline{
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--kb-text);
}

.kb-paint-frontend .kb-inline input[type="checkbox"]{
  width: 18px;
  height: 18px;
  accent-color: var(--kb-accent);
}

/* Result */
.kb-paint-frontend .kb-result{
  margin-top: 16px;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-card);
  background: var(--kb-surface);
  padding: 18px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}

.kb-paint-frontend .kb-result-main{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.kb-paint-frontend .kb-result-label{
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--kb-muted);
}

.kb-paint-frontend .kb-result-value{
  font-size: 44px;
  line-height: 1;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-top: 6px;
  color: var(--kb-accent);
}

.kb-paint-frontend .kb-result-sub{
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.45;
  color: var(--kb-muted);
}

.kb-paint-frontend .kb-result-secondary{
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--kb-border);
}

/* Button */
.kb-paint-frontend .kb-btn{
  cursor: pointer;
  border: 1px solid rgba(245, 73, 39, 0.22);
  background: rgba(245, 73, 39, 0.12);
  color: var(--kb-accent);
  padding: 10px 14px;
  border-radius: 14px;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 120ms ease, box-shadow 160ms ease, background 160ms ease, border-color 160ms ease;
  user-select: none;
}

.kb-paint-frontend .kb-btn:hover{
  background: rgba(245, 73, 39, 0.18);
  border-color: rgba(245, 73, 39, 0.28);
  box-shadow: 0 12px 26px rgba(16, 24, 40, 0.10);
  transform: translateY(-1px);
}

.kb-paint-frontend .kb-btn:active{ transform: translateY(0); }

.kb-paint-frontend .kb-btn:focus{ outline: none; }
.kb-paint-frontend .kb-btn:focus-visible{ box-shadow: var(--kb-focus); }

/* Breakdown */
.kb-paint-frontend .kb-breakdown{
  margin-top: 14px;
  border: 1px dashed rgba(17, 24, 39, 0.22);
  border-radius: 14px;
  background: #fff;
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--kb-text);
}

.kb-paint-frontend code.badge{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--kb-border);
  background: #f9fafb;
  color: #111827;
}

/* Minor: ensure injected <br> spacing doesn't look cramped */
.kb-paint-frontend .kb-breakdown strong{ display: inline-block; margin-bottom: 6px; }