/* ============================================================
   TECNOMETALES CNC — Componentes WhatsApp
   Reemplaza la cadena style.textContent de initWhatsApp()
   en assets/js/main.js y assets/js/main-en.js.
   Depende de: .btn / .btn-primary / .btn-outline (_components.css)
   ============================================================ */

:root {
  --wa-red:      #AF1925;  /* acento único de marca */
  --wa-red-dark: #791019;  /* hover */
  --wa-red-deep: #5E0C13;  /* active */
  --wa-ink:      #1C1D1E;  /* negro carbón */
  --wa-ink-2:    #2A2B2D;  /* carbón +1 (hover placa B) */
  --wa-beige:    #EDECE8;
  --wa-meta:     #B9B2A7;  /* texto secundario sobre carbón · 8.0:1 */
  --wa-ease:     cubic-bezier(0.16, 1, 0.3, 1);
}

/* ------------------------------------------------------------
   1 · BOTÓN FLOTANTE GLOBAL  (Opción A recomendada: «Módulo»)
   Pieza de dos celdas: módulo rojo con el glifo + placa carbón
   con la etiqueta. En móvil queda solo el módulo rojo 56×56.
   ------------------------------------------------------------ */

.wa-float {
  position: fixed;
  right: max(20px, env(safe-area-inset-right));
  bottom: max(20px, calc(env(safe-area-inset-bottom) + 12px));
  z-index: 900;
  display: inline-flex;
  align-items: stretch;
  height: 56px;
  color: #FFFFFF;
  background: var(--wa-ink);
  border-radius: 4px;
  overflow: hidden;
  text-decoration: none;
  font-family: 'Heebo', 'Helvetica Neue', Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
  /* filete de 1 px (separa del hero oscuro) + sombra corta de contacto */
  box-shadow:
    0 0 0 1px rgba(237, 236, 232, 0.32),
    0 2px 6px rgba(28, 29, 30, 0.22);

  /* entrada: oculto hasta que el JS añade .is-in */
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition:
    opacity 280ms var(--wa-ease),
    transform 280ms var(--wa-ease),
    visibility 0s linear 280ms;
}

.wa-float.is-in {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition:
    opacity 280ms var(--wa-ease),
    transform 280ms var(--wa-ease),
    visibility 0s;
}

.wa-float__mark {
  flex: none;
  display: grid;
  place-items: center;
  width: 56px;
  background: var(--wa-red);
  transition: background-color 150ms var(--wa-ease);
}

.wa-float svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
  display: block;
}

.wa-float__label {
  position: relative;
  display: none;               /* móvil: solo ícono */
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 0 20px 0 16px;
  white-space: nowrap;
}

.wa-float__k {                 /* «WHATSAPP» */
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.wa-float__v {                 /* «+506 7102 1732» */
  font-size: 11px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  color: var(--wa-meta);
}

/* regla roja de 2 px que se traza al hover, como una cota */
.wa-float__label::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 20px;
  bottom: 9px;
  height: 2px;
  background: var(--wa-red);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 280ms var(--wa-ease);
}

@media (min-width: 768px) {
  .wa-float__label { display: flex; }
}

.wa-float:hover .wa-float__mark { background: var(--wa-red-dark); }
.wa-float:hover .wa-float__label::after { transform: scaleX(1); }

.wa-float:focus-visible {
  outline: 2px solid var(--wa-red);
  outline-offset: 3px;
  box-shadow:
    0 0 0 3px #FFFFFF,          /* anillo blanco: visible sobre carbón y foto */
    0 2px 6px rgba(28, 29, 30, 0.22);
}
.wa-float:focus-visible .wa-float__mark { background: var(--wa-red-dark); }

.wa-float.is-in:active { transform: translateY(1px); }
.wa-float:active .wa-float__mark { background: var(--wa-red-deep); }

/* ------------------------------------------------------------
   1B · OPCIÓN B «Placa»  (opcional: añadir .wa-float--plate)
   Placa carbón única, glifo blanco, pestaña roja de 4 px.
   Si se elige A, este bloque puede borrarse.
   ------------------------------------------------------------ */

.wa-float--plate { background: var(--wa-ink); }
.wa-float--plate::before {
  content: '';
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--wa-red);
}
.wa-float--plate .wa-float__mark {
  width: 56px;
  padding-left: 4px;
  background: transparent;
}
.wa-float--plate .wa-float__label { padding-left: 2px; }
.wa-float--plate .wa-float__label::after { left: 2px; }
.wa-float--plate .wa-float__mark,
.wa-float--plate:hover .wa-float__mark,
.wa-float--plate:focus-visible .wa-float__mark,
.wa-float--plate:active .wa-float__mark { background: transparent; }
.wa-float--plate:hover,
.wa-float--plate:focus-visible { background: var(--wa-ink-2); }
.wa-float--plate:active { background: #000000; }

/* ------------------------------------------------------------
   2 · «COTIZAR POR WHATSAPP» EN FICHA DE PRODUCTO
   Uso: <a class="btn btn-outline wa-inline">…</a> dentro de .wa-row
   Glifo rojo + filete vertical + texto: secundario, de la familia
   .btn-outline, con el acento rojo solo en el glifo.
   ------------------------------------------------------------ */

.wa-row {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 12px;
}
/* ambos crecen: lado a lado comparten la fila; si no caben, cada uno ocupa el ancho completo */
.wa-row > .btn {
  flex: 1 1 auto;
  justify-content: center;
}

.wa-inline {
  gap: 12px;
  padding: 10px 24px 10px 18px;   /* 10 + glifo 18 + 10 + borde 4 = 42 px, igual que .btn-primary */
  color: var(--wa-ink);
  border-color: var(--wa-ink);
}

.wa-inline svg {
  flex: none;
  width: 18px;
  height: 18px;
  fill: currentColor;
  color: var(--wa-red);            /* 7.0:1 sobre blanco · 5.9:1 sobre beige */
  transition: color 150ms var(--wa-ease);
}

.wa-inline__t {
  padding-left: 12px;
  border-left: 1px solid rgba(28, 29, 30, 0.28);
  line-height: 1;
  transition: border-color 150ms var(--wa-ease);
}

.wa-inline:hover {                 /* hereda relleno negro de .btn-outline */
  background: var(--wa-ink);
  color: #FFFFFF;
}
.wa-inline:hover svg { color: #FFFFFF; }
.wa-inline:hover .wa-inline__t { border-left-color: rgba(255, 255, 255, 0.32); }

.wa-inline:focus-visible {
  outline: 2px solid var(--wa-red);
  outline-offset: 3px;
}

.wa-inline:active {                /* .btn:active ya aplica translateY(1px) scale(.98) */
  background: #000000;
  border-color: #000000;
  color: #FFFFFF;
}
.wa-inline:active svg { color: #FFFFFF; }
.wa-inline:active .wa-inline__t { border-left-color: rgba(255, 255, 255, 0.32); }

/* Variante para secciones oscuras (#1C1D1E / foto) — coherente con .btn-outline-invert */
.wa-inline--invert { color: #FFFFFF; border-color: #FFFFFF; }
.wa-inline--invert svg { color: #FFFFFF; }
.wa-inline--invert .wa-inline__t { border-left-color: rgba(255, 255, 255, 0.36); }
.wa-inline--invert:hover { background: #FFFFFF; color: var(--wa-ink); }
.wa-inline--invert:hover svg { color: var(--wa-red); }
.wa-inline--invert:hover .wa-inline__t { border-left-color: rgba(28, 29, 30, 0.28); }
.wa-inline--invert:focus-visible { outline-color: #FFFFFF; }
.wa-inline--invert:active { background: var(--wa-beige); border-color: var(--wa-beige); color: var(--wa-ink); }
.wa-inline--invert:active svg { color: var(--wa-red); }

/* Ancho reducido: se apila bajo «Solicitar cotización» a todo el ancho */
@media (max-width: 560px) {
  .wa-row { flex-direction: column; gap: 10px; }
  .wa-row > .btn {
    width: 100%;
    min-height: 48px;
  }
}

/* ------------------------------------------------------------
   Movimiento reducido e impresión
   ------------------------------------------------------------ */

@media (prefers-reduced-motion: reduce) {
  .wa-float,
  .wa-float.is-in,
  .wa-float__mark,
  .wa-float__label::after,
  .wa-inline,
  .wa-inline svg { transition: none; }
  .wa-float { transform: none; }
  .wa-float.is-in:active,
  .wa-inline:active { transform: none; }
}

@media print {
  .wa-float { display: none; }
}

/* ------------------------------------------------------------
   3 · VOLVER ARRIBA
   Pieza carbón 56×48 apilada sobre el flotante de WhatsApp,
   alineada a su borde derecho (en móvil forma una columna de
   56 px con el módulo rojo). Regla roja inferior = progreso de
   lectura, como un indicador de avance.
   ------------------------------------------------------------ */

.tm-top {
  position: fixed;
  right: max(20px, env(safe-area-inset-right));
  bottom: calc(max(20px, calc(env(safe-area-inset-bottom) + 12px)) + 64px); /* 56 del flotante + 8 de separación */
  z-index: 900;
  display: grid;
  place-items: center;
  width: 56px;
  height: 48px;
  padding: 0;
  margin: 0;
  color: #FFFFFF;
  background: var(--wa-ink);
  border: 0;
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  box-shadow:
    0 0 0 1px rgba(237, 236, 232, 0.32),
    0 2px 6px rgba(28, 29, 30, 0.22);

  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition:
    opacity 280ms var(--wa-ease),
    transform 280ms var(--wa-ease),
    visibility 0s linear 280ms,
    background-color 150ms var(--wa-ease);
}

.tm-top.is-in {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition:
    opacity 280ms var(--wa-ease),
    transform 280ms var(--wa-ease),
    visibility 0s,
    background-color 150ms var(--wa-ease);
}

.tm-top svg {
  width: 20px;
  height: 20px;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: square;
  stroke-linejoin: miter;
  transition: transform 150ms var(--wa-ease);
}

.tm-top__bar {                     /* progreso de lectura (--p: 0 → 1, lo actualiza el JS) */
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--wa-red);
  transform: scaleX(var(--p, 0));
  transform-origin: left center;
}

.tm-top:hover,
.tm-top:focus-visible { background: var(--wa-ink-2); }
.tm-top:hover svg { transform: translateY(-2px); }

.tm-top:focus-visible {
  outline: 2px solid var(--wa-red);
  outline-offset: 3px;
  box-shadow:
    0 0 0 3px #FFFFFF,
    0 2px 6px rgba(28, 29, 30, 0.22);
}

.tm-top:active { background: #000000; }
.tm-top.is-in:active { transform: translateY(1px); }

@media (prefers-reduced-motion: reduce) {
  .tm-top,
  .tm-top.is-in,
  .tm-top svg { transition: none; }
  .tm-top { transform: none; }
  .tm-top:hover svg,
  .tm-top.is-in:active { transform: none; }
}

@media print {
  .tm-top { display: none; }
}