/*
 * Peptide reconstitution calculator.
 * Colors intentionally reuse the same functional palette as cro.css — swap for
 * Amino's brand palette once defined. Font inherits the theme rather than
 * hardcoding a brand typeface.
 */

.amino-calc {
	--calc-accent: #0066cc;
	--calc-ink: #1d1d1f;
	--calc-muted: #6e6e73;
	--calc-line: #e8e8ed;
	--calc-surface: #f5f5f7;
	font-family: inherit;
	max-width: 100%;
	margin: 0 auto;
	background: #fff;
	border: 1px solid var(--calc-line);
	border-radius: 16px;
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
	overflow: hidden;
	box-sizing: border-box;
	color: var(--calc-ink);
}
.amino-calc *,
.amino-calc *::before,
.amino-calc *::after { box-sizing: border-box; }

.amino-calc__sr {
	position: absolute;
	width: 1px; height: 1px;
	padding: 0; margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* ── Header ── */
.amino-calc__header {
	background: #000;
	padding: 30px 25px;
	text-align: center;
}
.amino-calc__title {
	margin: 0 0 6px;
	color: #fff;
	font-size: clamp(1.5rem, 3vw, 2.1rem);
	font-weight: 700;
	letter-spacing: -0.02em;
	line-height: 1.15;
}
.amino-calc__subtitle {
	margin: 0 auto;
	max-width: 600px;
	color: #aeaeb2;
	font-size: 1rem;
	line-height: 1.5;
}

.amino-calc__body { padding: 30px; }

/* ── Inputs ── */
.amino-calc__inputs {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 20px;
	margin-bottom: 28px;
}
.amino-calc__section {
	background: var(--calc-surface);
	border: 1px solid var(--calc-line);
	border-radius: 12px;
	padding: 20px;
	margin: 0;
	min-width: 0;
}
.amino-calc__section-title {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 0 0 12px;
	margin: 0 0 16px;
	width: 100%;
	border-bottom: 1px solid var(--calc-line);
	font-size: 1.05rem;
	font-weight: 600;
	letter-spacing: -0.01em;
	color: var(--calc-ink);
}
.amino-calc__icon { font-size: 1.4rem; line-height: 1; }

.amino-calc__grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 8px;
}
.amino-calc__btn {
	appearance: none;
	background: #fff;
	border: 1px solid var(--calc-line);
	border-radius: 8px;
	padding: 11px 4px;
	color: var(--calc-ink);
	font: inherit;
	font-size: 0.9rem;
	font-weight: 600;
	text-align: center;
	cursor: pointer;
	transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.amino-calc__btn:hover { border-color: var(--calc-accent); color: var(--calc-accent); }
.amino-calc__btn:focus-visible {
	outline: none;
	border-color: var(--calc-accent);
	box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.25);
}
.amino-calc__btn.is-selected {
	background: var(--calc-accent);
	border-color: var(--calc-accent);
	color: #fff;
	box-shadow: 0 4px 12px rgba(0, 102, 204, 0.2);
}

.amino-calc__custom {
	display: flex;
	align-items: center;
	gap: 8px;
	margin-top: 10px;
}
.amino-calc__custom[hidden] { display: none; }
.amino-calc__input,
.amino-calc__select {
	flex: 1;
	min-width: 0;
	background: #fff;
	border: 1px solid var(--calc-line);
	border-radius: 8px;
	padding: 11px 12px;
	color: var(--calc-ink);
	font: inherit;
	font-size: 16px; /* prevents iOS zoom-on-focus */
	transition: border-color 0.15s;
}
.amino-calc__select { flex: 0 0 84px; }
.amino-calc__input:focus,
.amino-calc__select:focus {
	outline: none;
	border-color: var(--calc-accent);
	box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}
.amino-calc__unit { font-weight: 600; color: var(--calc-ink); }

/* ── Results ── */
.amino-calc__results {
	background: #fff;
	border: 1px solid var(--calc-line);
	border-radius: 16px;
	padding: 26px;
	box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}
.amino-calc__results-title {
	display: flex;
	align-items: center;
	gap: 10px;
	margin: 0 0 18px;
	font-size: 1.3rem;
	font-weight: 700;
	letter-spacing: -0.02em;
}

.amino-calc__headline {
	background: #f0f7ff;
	border: 1px dashed rgba(0, 102, 204, 0.3);
	border-radius: 12px;
	padding: 18px 20px;
	margin-bottom: 16px;
	text-align: center;
	font-size: 1.05rem;
	line-height: 1.5;
	color: var(--calc-muted);
}
.amino-calc__headline.is-active { color: var(--calc-ink); font-size: 1.15rem; }
.amino-calc__headline strong {
	color: var(--calc-ink);
	font-weight: 800;
	font-size: 1.25em;
	letter-spacing: -0.02em;
}
.amino-calc__headline-sub { color: var(--calc-muted); font-size: 0.9em; white-space: nowrap; }

.amino-calc__warning {
	background: #fff8e6;
	border: 1px solid #f0d470;
	border-radius: 10px;
	padding: 12px 16px;
	margin-bottom: 18px;
	font-size: 0.92rem;
	line-height: 1.5;
	color: #5a4000;
}
.amino-calc__warning[hidden] { display: none; }

/* ── Syringe visual ── */
.amino-calc__syringe {
	background: var(--calc-surface);
	border: 1px solid var(--calc-line);
	border-radius: 12px;
	padding: 24px 24px 16px;
	margin-bottom: 22px;
}
.amino-calc__syringe-barrel {
	position: relative;
	height: 44px;
	background: #fff;
	border: 1px solid var(--calc-line);
	border-radius: 100px;
	overflow: hidden;
}
.amino-calc__syringe-fill {
	position: absolute;
	left: 0; top: 0;
	height: 100%;
	width: 0;
	background: var(--calc-accent);
	border-right: 3px solid var(--calc-ink);
	border-radius: 100px 0 0 100px;
	transition: width 0.6s cubic-bezier(0.22, 0.61, 0.36, 1), background 0.2s;
	z-index: 1;
}
.amino-calc__syringe-fill.is-over { background: #c0392b; border-right-color: #7d2419; }
.amino-calc__syringe-ticks {
	position: absolute;
	inset: 0;
	z-index: 2;
}
.amino-calc__tick {
	position: absolute;
	top: 0;
	width: 1px;
	background: var(--calc-ink);
}
.amino-calc__tick.is-major { height: 40%; width: 2px; opacity: 0.25; }
.amino-calc__tick.is-minor { height: 20%; opacity: 0.12; }

.amino-calc__syringe-scale {
	position: relative;
	height: 22px;
	margin-top: 6px;
}
.amino-calc__syringe-scale span {
	position: absolute;
	top: 0;
	transform: translateX(-50%);
	font-size: 0.85rem;
	font-weight: 600;
	color: var(--calc-muted);
}
.amino-calc__syringe-caption {
	margin: 4px 0 0;
	text-align: center;
	font-size: 0.8rem;
	color: var(--calc-muted);
}

/* ── Result cards ── */
.amino-calc__cards {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
	gap: 16px;
}
.amino-calc__card {
	background: #fff;
	border: 1px solid var(--calc-line);
	border-radius: 12px;
	padding: 20px;
	text-align: center;
}
.amino-calc__card h4 {
	margin: 0 0 8px;
	font-size: 0.75rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var(--calc-muted);
}
.amino-calc__card p {
	margin: 0;
	font-size: 1.45rem;
	font-weight: 700;
	letter-spacing: -0.02em;
	color: var(--calc-ink);
}

/* ── Disclaimer ── */
.amino-calc__disclaimer {
	background: var(--calc-surface);
	border-top: 1px solid var(--calc-line);
	padding: 20px 30px;
	text-align: center;
	font-size: 0.85rem;
	line-height: 1.6;
	color: var(--calc-muted);
}
.amino-calc__disclaimer p { margin: 0; }
.amino-calc__disclaimer strong { color: var(--calc-ink); font-weight: 700; }

/* ── Responsive ── */
@media (max-width: 992px) {
	.amino-calc__inputs { grid-template-columns: 1fr; gap: 16px; }
	.amino-calc__grid { grid-template-columns: repeat(5, 1fr); }
}
@media (max-width: 768px) {
	.amino-calc__body { padding: 20px; }
	.amino-calc__results { padding: 20px; }
	.amino-calc__grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 480px) {
	.amino-calc__header { padding: 24px 18px; }
	.amino-calc__grid { grid-template-columns: repeat(2, 1fr); }
	.amino-calc__cards { grid-template-columns: 1fr; }
	.amino-calc__syringe { padding: 18px 16px 12px; }
	.amino-calc__syringe-scale span { font-size: 0.72rem; }
	.amino-calc__disclaimer { padding: 18px; }
}