/* ============================================================
   SECCIÓN · SER
   Plantilla: CONTENIDO (nivel 3)
   Diseño: 3 zonas — polaroid · centro (titular + acordeones + cta) · mar.IA
   Color de sección: var(--c-ser) = #F087AC (rosa pastel)
   Tipografías: IBM Plex Sans Condensed (cuerpo) + IBM Plex Mono (mono)
   ============================================================ */

.seccion-ser {
  --seccion: var(--c-ser, #F087AC);
  --seccion-hover: #e06b92;
  --azul-texto: #1a3a6e;
  --muted: rgba(10, 10, 10, 0.6);
  --linea: rgba(10, 10, 10, 0.1);
  font-family: "IBM Plex Sans Condensed", sans-serif;
  color: var(--ink, #0a0a0a);
  padding: 2.5rem clamp(1.5rem, 4vw, 2.5rem) 3rem;
  max-width: 1080px;
  margin: 0 auto;
  line-height: 1.55;
}

/* ============================================================
   LAYOUT GENERAL — 3 columnas
   ============================================================ */
.ser-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: start;
}

@media (max-width: 980px) {
  .ser-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ============================================================
   COLUMNA 1 — POLAROID + IDENTIDAD
   ============================================================ */
.ser-polaroid-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
@media (max-width: 980px) {
  .ser-polaroid-col { align-items: flex-start; text-align: left; }
}

.ser-polaroid {
  background: #fff;
  padding: 12px 12px 42px 12px;
  box-shadow:
    0 1px 2px rgba(10, 10, 10, 0.08),
    0 6px 14px rgba(10, 10, 10, 0.12),
    0 20px 40px rgba(10, 10, 10, 0.08);
  transform: rotate(-2deg);
  transition: transform .3s ease, box-shadow .3s ease;
  margin-bottom: 1.25rem;
  width: 100%;
  max-width: 200px;
}
.ser-polaroid:hover {
  transform: rotate(-1deg) translateY(-2px);
  box-shadow:
    0 1px 2px rgba(10, 10, 10, 0.08),
    0 10px 20px rgba(10, 10, 10, 0.16),
    0 28px 50px rgba(10, 10, 10, 0.1);
}

.ser-polaroid-foto {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: #e8e4dc;
}
.ser-polaroid-foto img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ser-identidad { margin-top: 0.3rem; }

.ser-rol {
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--seccion);
  margin-bottom: 0.3rem;
}

.ser-nombre {
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 0.6rem;
}

.ser-linkedin {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  color: var(--ink);
  text-decoration: none;
  transition: color .2s ease, transform .15s ease;
}
.ser-linkedin:hover {
  color: var(--seccion);
  transform: translateY(-2px);
}
.ser-linkedin:focus-visible {
  outline: 2px solid var(--seccion);
  outline-offset: 2px;
}

/* ============================================================
   COLUMNA 2 — CENTRO: titular + acordeones + cta
   ============================================================ */
.ser-centro {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.ser-titular-grande {
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.005em;
  color: var(--ink);
  margin: 0 0 0.4rem 0;
}

/* ============================================================
   TITULARES DE BLOQUE — 01 / PERSONA · 02 / PROFESIONAL
   Estilo numerado con peso editorial.
   ============================================================ */
.ser-bloque {
  display: flex;
  flex-direction: column;
}

.ser-bloque-titulo {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin: 0 0 1.1rem 0;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--linea);
  font-weight: 400;
}

.ser-bloque-num {
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(2.2rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1;
  color: var(--seccion);
  letter-spacing: -0.02em;
}

.ser-bloque-sep {
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 300;
  line-height: 1;
  color: var(--seccion);
  opacity: 0.5;
}

.ser-bloque-nombre {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--seccion);
  align-self: center;
}

.ser-bloque-contenido p {
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--ink);
  margin: 0 0 1rem 0;
}
.ser-bloque-contenido p:last-child {
  margin-bottom: 0;
}

/* Acordeón (HTML <details>/<summary> nativo) */
.ser-acordeon {
  border-top: 1px solid var(--linea);
  padding: 0;
}
.ser-acordeon:last-of-type {
  border-bottom: 1px solid var(--linea);
}

.ser-acordeon-trigger {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  cursor: pointer;
  list-style: none;        /* quita el triángulo nativo */
  user-select: none;
}
.ser-acordeon-trigger::-webkit-details-marker {
  display: none;           /* Safari/Chrome triángulo nativo */
}
.ser-acordeon-trigger::marker {
  display: none;
}

.ser-acordeon-titulo {
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--azul-texto);
  flex: 1;
}

.ser-acordeon-flecha {
  display: inline-flex;
  color: var(--seccion);
  flex-shrink: 0;
  transition: transform .25s ease;
  margin-top: -2px;
}

/* Cuando el acordeón está abierto, gira la flecha 90º */
.ser-acordeon[open] .ser-acordeon-flecha {
  transform: rotate(90deg);
}

.ser-acordeon-contenido {
  padding: 0 0 1rem 0;
}
.ser-acordeon-contenido p {
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--azul-texto);
  margin: 0 0 0.85rem 0;
}
.ser-acordeon-contenido p:last-child {
  margin-bottom: 0;
}

/* CTA ¿HABLAMOS? — wrapper centrado bajo las columnas */
.ser-cta-wrap {
  display: flex;
  justify-content: center;
  margin-top: clamp(2rem, 4vw, 3rem);
}

.seccion-ser .ser-cta,
.seccion-ser a.ser-cta {
  display: inline-block;
  background: var(--seccion) !important;
  color: #fff !important;
  text-decoration: none;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.95rem 2rem;
  border: none;
  outline: none;
  transition: background .2s ease, transform .15s ease;
}
.seccion-ser .ser-cta:hover {
  background: var(--seccion-hover) !important;
  transform: translateY(-2px);
}
.seccion-ser .ser-cta:focus,
.seccion-ser .ser-cta:focus-visible {
  outline: none;
  background: var(--seccion-hover) !important;
}

/* ============================================================
   COLUMNA 3 — mar.IA (chat funcional)
   ============================================================ */
.ser-maria {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  border-left: 1px solid var(--linea);
  padding-left: clamp(1.2rem, 3vw, 2rem);
}
@media (max-width: 980px) {
  .ser-maria {
    border-left: none;
    border-top: 1px solid var(--linea);
    padding-left: 0;
    padding-top: 1.5rem;
  }
}

.ser-maria-bienvenida {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: opacity .3s ease;
}
.ser-maria-bienvenida.oculta {
  display: none;
}

.ser-maria-saludo p {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 0.2rem 0;
  line-height: 1.4;
}

.ser-maria-etiqueta {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--seccion);
  margin-top: 0.2rem;
}

/* ---- Hilo de conversación ---- */
.ser-maria-hilo {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-height: 360px;
  overflow-y: auto;
  padding-right: 4px;
}
.ser-maria-hilo:empty {
  display: none;
}

.ser-maria-mensaje {
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: 0.92rem;
  line-height: 1.5;
  white-space: pre-wrap;
  animation: serMariaAparece .35s ease;
}

.ser-maria-mensaje--tu {
  align-self: flex-end;
  background: rgba(10, 10, 10, 0.06);
  color: var(--ink);
  padding: 0.7rem 0.9rem;
  max-width: 92%;
}

.ser-maria-mensaje--ia {
  align-self: flex-start;
  color: var(--ink);
  max-width: 100%;
}

.ser-maria-mensaje--ia .ser-maria-quien {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--seccion);
  display: block;
  margin-bottom: 0.3rem;
  text-transform: lowercase;
}

/* Punto pensando */
.ser-maria-pensando {
  align-self: flex-start;
  width: 10px;
  height: 10px;
  background: var(--seccion);
  margin: 0.3rem 0;
  animation: serMariaParpadeo 1.05s steps(2, jump-none) infinite;
}

@keyframes serMariaParpadeo {
  50% { opacity: 0; }
}

@keyframes serMariaAparece {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Punto final parpadeante al terminar la respuesta */
.ser-maria-punto-final {
  display: inline-block;
  width: 0.45em;
  height: 0.45em;
  background: var(--seccion);
  margin-left: 0.2em;
  vertical-align: 0.05em;
  animation: serMariaParpadeo 1.05s steps(2, jump-none) infinite;
}

/* ---- Caja de entrada ---- */
.ser-maria-input {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.ser-maria-textarea {
  width: 100%;
  min-height: 130px;
  padding: 1rem 1.1rem;
  background: #fff;
  border: 1px solid var(--linea);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--ink);
  resize: vertical;
  transition: border-color .2s ease;
}
.ser-maria-textarea:focus {
  outline: none;
  border-color: var(--seccion);
}
.ser-maria-textarea::placeholder {
  color: var(--muted);
  font-style: normal;
}
.ser-maria-textarea:disabled {
  background: #fdfdfd;
  cursor: not-allowed;
}

.ser-maria-pie {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
}

.ser-maria-contador {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.ser-maria-enviar {
  font-family: "IBM Plex Mono", monospace;
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  background: var(--seccion);
  color: #fff;
  border: none;
  padding: 0.7rem 1.2rem;
  cursor: pointer;
  transition: background .2s ease, opacity .2s ease;
}
.ser-maria-enviar:hover:not(:disabled) {
  background: var(--seccion-hover);
}
.ser-maria-enviar:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.ser-maria-enviar:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 600px) {
  .seccion-ser {
    padding: 1.5rem 1.2rem 2rem;
  }
  .ser-titular-grande {
    font-size: 1.05rem;
  }
  .ser-maria-textarea {
    min-height: 110px;
  }
  .ser-maria-hilo {
    max-height: 280px;
  }
}