/**
 * Estilos del Comparador de respuesta en frecuencia (FR).
 * Hereda tokens y componentes (theme-agnostic) de iat-core.css.
 */

.iat-fr__add {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 0 1.25rem;
	margin-top: .5rem;
}
.iat-fr__libfield { min-width: 0; }
.iat-fr__librow { display: flex; gap: .6rem; }
.iat-fr__librow .iat-select { flex: 1 1 auto; }
.iat-fr__addbtn { flex: 0 0 auto; padding: .55em 1.2em; min-height: 46px; }

.iat-fr__file { font: inherit; font-size: .9rem; color: var(--iat-muted); width: 100%; }
.iat-fr__file::file-selector-button {
	font: inherit;
	font-weight: 700;
	color: #fff;
	background: var(--iat-accent);
	border: 0;
	border-radius: 999px;
	padding: .6em 1.2em;
	margin-right: .7rem;
	cursor: pointer;
}

/* ---------------------------------------------------------- Lista de curvas */
.iat-fr__list { margin: .5rem 0 .75rem; }
.iat-fr__err { color: var(--iat-danger); font-weight: 600; }
.iat-fr__item {
	display: flex;
	align-items: center;
	gap: .6rem;
	padding: .35rem .5rem;
	border: 1px solid var(--iat-line);
	border-radius: var(--iat-radius-sm);
	margin-bottom: .35rem;
	background: var(--iat-surface);
	font-size: .9rem;
}
.iat-fr__item.is-off { opacity: .72; } /* atenuado pero con contraste AA */
.iat-fr__swatch {
	flex: 0 0 auto;
	width: 18px;
	height: 8px;
	border-radius: 4px;
}
.iat-fr__name { flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 600; }

/* Botones de la lista (blindados: son <button>) */
.iat-fr__ctl {
	flex: 0 0 auto;
	width: 34px;
	height: 34px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	font: inherit;
	font-size: .85rem;
	border: 1px solid var(--iat-line);
	border-radius: 8px;
	cursor: pointer;
	transition: border-color .15s ease, background .15s ease;
}
.iat .iat-fr__ctl,
.iat .iat-fr__ctl:hover,
.iat .iat-fr__ctl:focus,
.iat .iat-fr__ctl:active {
	background-color: transparent !important;
	color: inherit !important;
}
.iat .iat-fr__ctl:hover { background-color: var(--iat-surface-2) !important; border-color: var(--iat-accent); }
.iat-fr__ctl:focus-visible { outline: 3px solid var(--iat-accent-2); outline-offset: 2px; }

/* ------------------------------------------------------------------ Controles */
.iat-fr__controls {
	display: grid;
	grid-template-columns: auto auto 1fr;
	gap: 0 1.5rem;
	align-items: start;
}
.iat-fr__normrow { display: flex; align-items: center; gap: .5rem; }
.iat-fr__norm { width: 7.5rem; }
.iat-fr__unit { color: var(--iat-muted); font-size: .9rem; }
.iat-fr__deltalbl { display: inline-flex; align-items: center; gap: .4ch; font-weight: 600; cursor: pointer; }
.iat-fr__deltalbl input { accent-color: var(--iat-accent); width: 18px; height: 18px; }
.iat-fr__deltarow { display: flex; align-items: center; gap: .5rem; margin-top: .5rem; }
.iat-fr__dsel { flex: 1 1 auto; min-height: 40px; padding: .4em .7em; }
.iat-fr__minus { font-weight: 800; color: var(--iat-muted); }

/* -------------------------------------------------------------------- Gráfica */
.iat-fr__wrap {
	border: 1px solid var(--iat-line);
	border-radius: var(--iat-radius-sm);
	background: var(--iat-surface);
	margin: .75rem 0 .25rem;
	overflow: hidden;
}
.iat-fr__canvas {
	display: block;
	width: 100%;
	height: 380px;
	touch-action: pan-y;
}

@media (max-width: 760px) {
	.iat-fr__add { grid-template-columns: 1fr; }
	.iat-fr__controls { grid-template-columns: 1fr; gap: 0; }
	.iat-fr__canvas { height: 300px; }
}

/* Panel de análisis vs. target + AutoEQ */
.iat-fr__anpanel {
	border-top: 1px solid var(--iat-line);
	margin-top: 1.25rem;
	padding-top: 1rem;
}
.iat-fr__h3 { font-size: 1.15rem; font-weight: 800; margin: 0 0 .25rem; }
.iat-fr__h4 { font-size: 1rem; font-weight: 700; margin: 1rem 0 .25rem; }
.iat-fr__anrow { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }
.iat-fr__devtable td:first-child, .iat-fr__devtable th:first-child { white-space: nowrap; }
.iat-fr__devcell { width: 50%; }
.iat-fr__devbar { display: inline-block; height: 10px; border-radius: 999px; min-width: 3px; vertical-align: middle; }
@media (max-width: 560px) { .iat-fr__anrow { grid-template-columns: 1fr; } }