/* =========================================================
   HERRERA ACOUSTICS · calc.css
   Estilos de las calculadoras acústicas.
   Se carga solo en calculadora-reverberacion.html y
   calculadora-modos.html, encima de styles.css.
   Fondo blanco, rojo Herrera como acento, pasos numerados.
   ========================================================= */

/* display:inline-flex de .btn pisa la regla del navegador para [hidden] */
[hidden] { display: none !important; }

/* ---------- Layout ---------- */
.calc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(260px, 0.9fr);
  gap: clamp(24px, 3vw, 44px);
  align-items: start;
}

.calc-form {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 32px);
  background: #fff;
}

/* ---------- Progreso por pasos ---------- */
.calc-progress {
  display: flex; flex-wrap: wrap; gap: 6px;
  list-style: none; margin: 0 0 26px; padding: 0;
  counter-reset: paso;
}
.calc-progress li {
  counter-increment: paso;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 13px 7px 9px;
  border: 1px solid var(--line); border-radius: 999px;
  font-size: 12.8px; color: var(--text-dim);
  cursor: pointer; user-select: none;
  transition: border-color .16s ease, color .16s ease, background .16s ease;
}
.calc-progress li::before {
  content: counter(paso);
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--bg-soft-2); color: var(--text-muted);
  font-family: var(--font-mono); font-size: 11px;
  display: grid; place-items: center;
}
.calc-progress li:hover { border-color: var(--line-strong); color: var(--text-muted); }
.calc-progress li.is-done { color: var(--text-muted); }
.calc-progress li.is-done::before { background: var(--dark); color: #fff; }
.calc-progress li.is-active { border-color: var(--accent); color: var(--text); font-weight: 700; }
.calc-progress li.is-active::before { background: var(--accent); color: #fff; }

/* ---------- Pasos ---------- */
.calc-step { display: none; border: 0; padding: 0; margin: 0; min-width: 0; }
.calc-step.is-active { display: block; }
.calc-step legend { padding: 0; }
.calc-step h2 {
  font-size: clamp(21px, 2.2vw, 27px);
  margin-bottom: 8px;
}
.calc-step > p.calc-step-lead {
  color: var(--text-muted); font-size: 15px; margin-bottom: 22px; max-width: 58ch;
}
.calc-grid { display: grid; gap: 14px; }
.calc-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.calc-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.calc-field-hint { font-size: 12.8px; color: var(--text-dim); }
.calc-subhead {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--text-dim);
  margin: 24px 0 12px; padding-top: 18px; border-top: 1px solid var(--line);
}
.calc-step:first-of-type .calc-subhead:first-child,
.calc-subhead:first-child { margin-top: 0; padding-top: 0; border-top: 0; }

.calc-nav {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--line);
}
.calc-nav .btn[disabled] { opacity: .4; pointer-events: none; }
.calc-error {
  margin-top: 14px; font-size: 14px; color: var(--accent);
  border-left: 3px solid var(--accent); background: var(--accent-soft);
  padding: 10px 14px; border-radius: 0 var(--radius) var(--radius) 0;
}

/* ---------- Columna lateral ---------- */
.calc-aside {
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: var(--bg-soft); padding: 22px;
  position: sticky; top: 88px;
}
.calc-aside h3 { font-size: 17px; margin-bottom: 14px; }
.calc-aside dl { margin: 0; display: grid; gap: 0; }
.calc-aside dt {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--text-dim); margin-top: 14px;
}
.calc-aside dd { margin: 2px 0 0; font-size: 16px; font-weight: 700; }
.calc-aside dd.is-small { font-size: 13.5px; font-weight: 400; color: var(--text-muted); }
.calc-aside .calc-note { margin-top: 18px; }

/* ---------- Resultados ---------- */
.calc-results { padding-top: clamp(40px, 6vw, 72px); }
.calc-verdict {
  border: 1px solid var(--line); border-left: 4px solid var(--text-dim);
  border-radius: var(--radius-lg); background: #fff;
  padding: clamp(22px, 3vw, 32px); margin-bottom: 22px;
}
.calc-verdict h2 { margin: 12px 0 10px; }
.calc-verdict p { color: var(--text-muted); margin: 0; max-width: 70ch; }
.calc-badge {
  display: inline-block; font-family: var(--font-mono);
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  padding: 5px 11px; border-radius: 999px;
  background: var(--bg-soft-2); color: var(--text-muted);
}
.v-favorable { border-left-color: #1c7c4a; }
.v-favorable .calc-badge { background: #e6f4ec; color: #1c7c4a; }
.v-optimizacion { border-left-color: #b8730a; }
.v-optimizacion .calc-badge { background: #fdf0dc; color: #b8730a; }
.v-profesional { border-left-color: var(--accent); }
.v-profesional .calc-badge { background: var(--accent-soft); color: var(--accent); }

.calc-numbers {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line);
  border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 26px;
}
.calc-numbers > div { background: #fff; padding: 18px 20px; }
.calc-numbers span {
  display: block; font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: .12em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 6px;
}
.calc-numbers strong { font-family: var(--font-display); font-size: clamp(19px, 2vw, 24px); }
.calc-numbers-post > div { background: var(--bg-soft); }
.calc-numbers-post { margin: 22px 0 0; }

.calc-block { margin: 34px 0; }
.calc-block > .eyebrow { margin-bottom: 12px; }
.calc-text { font-size: clamp(16px, 1.4vw, 18px); color: var(--text); max-width: 74ch; }
.calc-note { font-size: 13.5px; color: var(--text-dim); max-width: 74ch; margin-top: 14px; }

.calc-two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(22px, 3vw, 40px); margin: 34px 0; }

/* ---------- Gráficas ---------- */
.calc-chart-wrap {
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: #fff; padding: 16px 18px 12px;
}
.calc-chart { width: 100%; height: auto; display: block; }
.calc-chart-sq { max-width: 460px; margin: 0 auto; }
.ch-grid { stroke: var(--line); stroke-width: 1; }
.ch-axis { font-family: var(--font-mono); font-size: 11px; fill: var(--text-dim); }
.ch-target { fill: rgba(228, 18, 31, .10); stroke: rgba(228, 18, 31, .35); stroke-width: 1; }
.ch-bolt { fill: rgba(228, 18, 31, .10); stroke: rgba(228, 18, 31, .55); stroke-width: 1.4; }
.calc-legend {
  list-style: none; margin: 12px 0 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 6px 20px;
  font-size: 12.8px; color: var(--text-muted);
}
.calc-legend li { display: inline-flex; align-items: center; gap: 8px; }
.sw { width: 14px; height: 3px; border-radius: 2px; background: var(--text); display: inline-block; }
.sw-target { height: 12px; background: rgba(228, 18, 31, .18); border: 1px solid rgba(228, 18, 31, .4); }
.sw-bolt { height: 12px; background: rgba(228, 18, 31, .14); border: 1px solid rgba(228, 18, 31, .55); }

/* ---------- Productos propuestos ---------- */
.calc-products { display: grid; gap: 14px; }
.calc-product {
  display: grid; grid-template-columns: 74px 1fr; gap: 18px; align-items: start;
  border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 20px 22px; background: #fff;
}
.calc-qty {
  font-family: var(--font-display); font-size: 26px; font-weight: 700;
  color: var(--accent); line-height: 1.1;
}
.calc-product h4 { font-family: var(--font-display); font-size: 17.5px; margin-bottom: 6px; }
.calc-product p { font-size: 14.5px; color: var(--text-muted); margin: 0 0 6px; }
.calc-product-meta { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); }

/* ---------- Listas de hallazgos ---------- */
.calc-flags { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 10px; }
.calc-flags li {
  font-size: 14.5px; color: var(--text-muted);
  border-left: 3px solid var(--accent); background: var(--accent-soft);
  padding: 10px 14px; border-radius: 0 var(--radius) var(--radius) 0;
}
.calc-flags-plain li { border-left-color: var(--line-strong); background: var(--bg-soft); color: var(--text); }

/* ---------- Planta ---------- */
.calc-plan-wrap {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(240px, 340px);
  gap: clamp(20px, 3vw, 36px); align-items: center;
  border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px; background: #fff;
}
.calc-plan { width: 100%; height: auto; max-height: 520px; display: block; margin: 0 auto; }
.pl-lbl { font-family: var(--font-mono); font-size: 11px; fill: var(--text-muted); }
.calc-plan-data h4 { font-family: var(--font-display); font-size: 17px; margin-bottom: 8px; }
.calc-plan-data p { font-size: 14.5px; color: var(--text-muted); }

/* ---------- Tabla técnica ---------- */
.calc-table { min-width: 640px; font-size: 13.8px; }
.calc-table th, .calc-table td { padding: 10px 14px; }
.calc-table td:not(:first-child) { font-family: var(--font-mono); font-size: 12.8px; }
.calc-table tr.is-total td { font-weight: 700; background: var(--bg-soft); }

/* ---------- Detalle desplegable ---------- */
.calc-details {
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: var(--bg-soft); margin-top: 34px;
}
.calc-details summary {
  cursor: pointer; padding: 18px 22px; font-weight: 700;
  font-family: var(--font-display); font-size: 17px; list-style: none;
  display: flex; align-items: center; gap: 10px;
}
.calc-details summary::-webkit-details-marker { display: none; }
.calc-details summary::before {
  content: "+"; font-family: var(--font-mono); color: var(--accent); font-size: 18px;
}
.calc-details[open] summary::before { content: "−"; }
.calc-details-body { padding: 0 22px 24px; }
.calc-details-body h4 {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--text-dim);
  margin: 22px 0 10px; font-weight: 500;
}
.calc-details-body p { font-size: 14.5px; color: var(--text-muted); }
.calc-formula { margin: 0; padding-left: 20px; font-size: 14.5px; color: var(--text-muted); }
.calc-formula li { margin-bottom: 6px; }
.calc-details-body .table-wrap { background: #fff; }

.calc-rerun { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 30px; }

/* ---------- Tarjetas de acceso (hub) ---------- */
.calc-entry { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.calc-entry .card { padding: 26px; }
.calc-entry .card h3 { font-size: clamp(20px, 2vw, 24px); }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .calc-layout { grid-template-columns: 1fr; }
  .calc-aside { position: static; order: -1; }
  .calc-numbers { grid-template-columns: repeat(2, 1fr); }
  .calc-two { grid-template-columns: 1fr; }
  .calc-plan-wrap { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .calc-grid-2, .calc-grid-3 { grid-template-columns: 1fr; }
  .calc-entry { grid-template-columns: 1fr; }
  .calc-progress li { font-size: 0; padding: 7px; gap: 0; }
  .calc-progress li::before { width: 24px; height: 24px; font-size: 12px; }
  .calc-product { grid-template-columns: 56px 1fr; gap: 12px; }
  .calc-numbers { grid-template-columns: 1fr; }
  .calc-nav .btn { flex: 1 1 auto; justify-content: center; }
}

/* ---------- Impresión ---------- */
@media print {
  .site-header, .site-footer, .calc-layout, .calc-rerun, .crosslinks, .page-hero .btn-row { display: none !important; }
  .calc-results { padding-top: 0; }
  .calc-details { break-inside: avoid; }
  .calc-details[open] .calc-details-body { display: block; }
  .calc-chart-wrap, .calc-verdict, .calc-numbers, .calc-product { break-inside: avoid; }
  body { font-size: 12px; }
}