/* Pet BMI & Weight Calculator — front-end styles (scoped to .pbc-app) */

.pbc-app {
	--pbc-primary: #0f766e;
	--pbc-button: #0d9488;
	--pbc-bg: #ffffff;
	--pbc-soft: #f6f8f9;
	--pbc-line: #e2e8ef;
	--pbc-text: #16202b;
	--pbc-muted: #5b6b7c;
	--pbc-radius: 16px;
	--pbc-shadow: 0 10px 30px rgba(15, 32, 43, .07);
	box-sizing: border-box;
	max-width: 880px;
	margin: 0 auto;
	color: var(--pbc-text);
	font-size: 16px;
	line-height: 1.6;
	-webkit-text-size-adjust: 100%;
}
.pbc-app *, .pbc-app *::before, .pbc-app *::after { box-sizing: inherit; }

.pbc-hero { text-align: center; padding: 8px 0 20px; }
.pbc-eyebrow {
	display: inline-block; margin: 0 0 8px; padding: 4px 12px;
	background: color-mix(in srgb, var(--pbc-primary) 12%, #fff);
	color: var(--pbc-primary); border-radius: 999px;
	font-size: .8rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase;
}
.pbc-title { margin: 0 0 8px; font-size: clamp(1.6rem, 4vw, 2.3rem); line-height: 1.2; font-weight: 700; }
.pbc-subtitle { margin: 0 auto; max-width: 46rem; color: var(--pbc-muted); }
.pbc-h3 { margin: 0 0 10px; font-size: 1.15rem; font-weight: 700; }

.pbc-progress { margin: 8px 0 20px; }
.pbc-progress-list {
	display: flex; flex-wrap: wrap; gap: 6px 14px;
	list-style: none; margin: 0 0 10px; padding: 0;
}
.pbc-progress-item { display: flex; align-items: center; gap: 6px; font-size: .82rem; color: var(--pbc-muted); }
.pbc-progress-num {
	display: inline-flex; align-items: center; justify-content: center;
	width: 22px; height: 22px; border-radius: 50%;
	background: var(--pbc-soft); border: 1px solid var(--pbc-line); font-size: .75rem; font-weight: 700;
}
.pbc-progress-item.is-active { color: var(--pbc-primary); font-weight: 700; }
.pbc-progress-item.is-active .pbc-progress-num,
.pbc-progress-item.is-done .pbc-progress-num { background: var(--pbc-primary); border-color: var(--pbc-primary); color: #fff; }
.pbc-progress-bar { height: 6px; border-radius: 999px; background: var(--pbc-line); overflow: hidden; }
.pbc-progress-fill { display: block; height: 100%; background: var(--pbc-primary); transition: width .3s ease; }

.pbc-form, .pbc-card, .pbc-disclaimer {
	background: var(--pbc-bg); border: 1px solid var(--pbc-line);
	border-radius: var(--pbc-radius); box-shadow: var(--pbc-shadow);
	padding: 22px; margin-bottom: 18px;
}
.pbc-step { display: none; border: 0; margin: 0; padding: 0; min-width: 0; }
.pbc-step.is-active { display: block; }
.pbc-step-title { font-size: 1.2rem; font-weight: 700; padding: 0; margin: 0 0 14px; }

.pbc-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.pbc-field--full { grid-column: 1 / -1; }
@media (max-width: 640px) { .pbc-grid { grid-template-columns: 1fr; } }

.pbc-field label, .pbc-label { display: block; font-weight: 600; margin-bottom: 6px; font-size: .95rem; }
.pbc-req { color: #b42318; }
.pbc-app input[type="text"], .pbc-app input[type="number"], .pbc-app select {
	width: 100%; padding: 12px 14px; font-size: 1rem; color: var(--pbc-text);
	background: #fff; border: 1px solid var(--pbc-line); border-radius: 12px; min-height: 48px;
}
.pbc-app input:focus-visible, .pbc-app select:focus-visible,
.pbc-app button:focus-visible, .pbc-app summary:focus-visible,
.pbc-app label:focus-within {
	outline: 3px solid color-mix(in srgb, var(--pbc-primary) 45%, #fff);
	outline-offset: 2px;
}
.pbc-inline { display: flex; gap: 8px; align-items: center; }
.pbc-inline select { width: auto; min-width: 110px; }
.pbc-suffix { font-weight: 700; color: var(--pbc-muted); min-width: 2.2em; }
.pbc-hint { margin: 6px 0 0; font-size: .85rem; color: var(--pbc-muted); }
.pbc-note {
	margin: 14px 0 0; padding: 12px 14px; font-size: .9rem;
	background: var(--pbc-soft); border-left: 4px solid var(--pbc-primary); border-radius: 10px;
}

.pbc-choice-grid { display: grid; gap: 16px; }
.pbc-choice-grid--2 { grid-template-columns: 1fr 1fr; }
.pbc-species { display: block; position: relative; }
.pbc-species input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.pbc-species-inner {
	display: flex; flex-direction: column; align-items: center; gap: 8px;
	padding: 28px 12px; border: 2px solid var(--pbc-line); border-radius: var(--pbc-radius);
	cursor: pointer; transition: all .18s ease; background: #fff;
}
.pbc-species-inner:hover { border-color: var(--pbc-primary); transform: translateY(-2px); }
.pbc-species-emoji { font-size: 2.6rem; line-height: 1; }
.pbc-species-name { font-weight: 700; font-size: 1.05rem; }
.pbc-species input:checked + .pbc-species-inner {
	border-color: var(--pbc-primary);
	background: color-mix(in srgb, var(--pbc-primary) 8%, #fff);
}

.pbc-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pbc-pill input, .pbc-option input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.pbc-pill span {
	display: inline-block; padding: 10px 16px; border: 1px solid var(--pbc-line);
	border-radius: 999px; cursor: pointer; font-size: .93rem; min-height: 44px; line-height: 24px;
}
.pbc-pill input:checked + span,
.pbc-option input:checked + span {
	border-color: var(--pbc-primary); background: color-mix(in srgb, var(--pbc-primary) 10%, #fff);
	color: var(--pbc-primary); font-weight: 600;
}
.pbc-question { margin-bottom: 22px; }
.pbc-options { display: grid; gap: 8px; }
.pbc-option span {
	display: block; padding: 12px 14px; border: 1px solid var(--pbc-line);
	border-radius: 12px; cursor: pointer; font-size: .95rem;
}
.pbc-option span:hover { border-color: var(--pbc-primary); }

.pbc-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.pbc-btn {
	appearance: none; border: 1px solid transparent; border-radius: 999px;
	padding: 13px 24px; font-size: 1rem; font-weight: 600; cursor: pointer;
	min-height: 48px; transition: filter .15s ease, background .15s ease;
}
.pbc-btn--primary { background: var(--pbc-button); color: #fff; }
.pbc-btn--primary:hover { filter: brightness(1.07); }
.pbc-btn--primary[disabled] { opacity: .6; cursor: default; }
.pbc-btn--ghost { background: #fff; border-color: var(--pbc-line); color: var(--pbc-text); }
.pbc-btn--ghost:hover { border-color: var(--pbc-primary); color: var(--pbc-primary); }
.pbc-link {
	background: none; border: 0; padding: 4px 6px; color: var(--pbc-primary);
	font-size: .85rem; cursor: pointer; text-decoration: underline;
}

.pbc-error { margin: 14px 0 0; color: #b42318; font-size: .92rem; font-weight: 600; display: none; }
.pbc-error.is-visible { display: block; }
.pbc-live { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.pbc-visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* Results */
.pbc-result-head { text-align: center; margin-bottom: 14px; }
.pbc-result-emoji { font-size: 2.4rem; display: block; }
.pbc-badge {
	display: block; text-align: center; margin: 0 auto 16px; padding: 12px 18px;
	border-radius: 999px; font-weight: 700;
}
.pbc-badge--good { background: #e7f6ec; color: #15803d; }
.pbc-badge--warn { background: #fff4e5; color: #b45309; }
.pbc-badge--bad { background: #fdecec; color: #b42318; }
.pbc-meter { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.pbc-meter-label { font-size: .75rem; color: var(--pbc-muted); white-space: nowrap; }
.pbc-meter-track {
	position: relative; flex: 1; height: 10px; border-radius: 999px;
	background: linear-gradient(90deg, #93c5fd 0%, #34d399 40%, #34d399 55%, #fbbf24 75%, #f87171 100%);
}
.pbc-meter-dot {
	position: absolute; top: 50%; width: 18px; height: 18px; margin-left: -9px;
	transform: translateY(-50%); background: #fff; border: 3px solid var(--pbc-primary);
	border-radius: 50%; box-shadow: 0 2px 6px rgba(0,0,0,.2);
}
.pbc-metrics { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; margin: 0 0 8px; }
@media (max-width: 640px) { .pbc-metrics { grid-template-columns: 1fr; } }
.pbc-metric {
	background: var(--pbc-soft); border: 1px solid var(--pbc-line);
	border-radius: 12px; padding: 14px 16px;
}
.pbc-metric dt { font-size: .82rem; color: var(--pbc-muted); margin: 0 0 4px; }
.pbc-metric dd { margin: 0; font-size: 1.15rem; font-weight: 700; }
.pbc-guidance {
	margin-top: 16px; padding: 16px; border-radius: 12px;
	background: color-mix(in srgb, var(--pbc-primary) 7%, #fff);
}
.pbc-guidance h4, .pbc-ai h4 { margin: 0 0 6px; font-size: 1rem; }
.pbc-guidance p:last-child, .pbc-ai p:last-child { margin-bottom: 0; }
.pbc-ai { margin-top: 16px; padding: 16px; border: 1px dashed var(--pbc-line); border-radius: 12px; }
.pbc-result-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }

/* BCS scale */
.pbc-scale { list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 8px; margin: 0 0 10px; padding: 0; }
@media (max-width: 640px) { .pbc-scale { grid-template-columns: 1fr 1fr; } }
.pbc-scale-item {
	padding: 10px 12px; border-radius: 12px; border: 1px solid var(--pbc-line);
	background: var(--pbc-soft); font-size: .85rem;
}
.pbc-scale-item[data-scale="4"], .pbc-scale-item[data-scale="5"] { background: #e7f6ec; border-color: #b7e3c5; }
.pbc-scale-item[data-scale="6"], .pbc-scale-item[data-scale="7"] { background: #fff4e5; border-color: #f3d9a9; }
.pbc-scale-item[data-scale="8"], .pbc-scale-item[data-scale="9"] { background: #fdecec; border-color: #f3c0bd; }
.pbc-scale-score { display: block; font-weight: 700; }
.pbc-scale-text { color: var(--pbc-muted); }

/* Tracking */
.pbc-pet { border: 1px solid var(--pbc-line); border-radius: 12px; padding: 14px; margin-top: 12px; }
.pbc-pet-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.pbc-pet-head h4 { margin: 0; font-size: 1rem; }
.pbc-chart { display: block; width: 100%; height: 110px; color: var(--pbc-primary); margin: 10px 0 4px; }
.pbc-records { list-style: none; margin: 8px 0 0; padding: 0; }
.pbc-records li {
	display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
	padding: 8px 0; border-top: 1px solid var(--pbc-line); font-size: .9rem;
}
.pbc-record-note { flex: 1; color: var(--pbc-muted); }

/* Disclaimer + FAQ */
.pbc-disclaimer { background: var(--pbc-soft); font-size: .9rem; }
.pbc-disclaimer p { margin: 6px 0 0; }
.pbc-faq-item { border-top: 1px solid var(--pbc-line); padding: 12px 0; }
.pbc-faq-item summary { cursor: pointer; font-weight: 600; list-style: revert; }
.pbc-faq-item p { margin: 8px 0 0; color: var(--pbc-muted); }

@media print {
	.pbc-progress, .pbc-actions, .pbc-result-actions, .pbc-faq { display: none !important; }
}
@media (prefers-reduced-motion: reduce) {
	.pbc-app * { transition: none !important; }
}