/* ===================== VARIABLES ===================== */
:root{
  --uam-dark:#333333;
  --hover-bg:#222222;
  --card-border: rgba(0,0,0,.06);
  --card-shadow: 0 4px 18px rgba(0,0,0,.06);

  /* Colores por unidad */
  --azc:#CD032E;
  --cua:#F08200;
  --izt:#57A519;
  --ler:#AD25A8;
  --xoc:#0072CE;

  /* Paleta acordeón tipo BS5 info-subtle (como tu captura) */
  --uam-info-bg:        #cff4fc;
  --uam-info-bg-hover:  #b6ecf8;
  --uam-info-border:    #9eeaf9;
  --uam-info-text:      #055160;

  /* Paletas RGB para tintes tarjetas */
  --azc-rgb: 205, 3, 46;
  --cua-rgb: 240, 130, 0;
  --izt-rgb: 87, 165, 25;
  --ler-rgb: 173, 37, 168;
  --xoc-rgb: 0, 114, 206;
}

/* ===================== TRANSICIONES GENERALES ===================== */
a, .btn, .accordion-button{
  transition: background .2s ease, color .2s ease, transform .15s ease, box-shadow .2s ease, border-color .2s ease;
}
.btn:hover{ transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0,0,0,.12); }

/* ===================== CABECERA / TARJETA BASE ===================== */
.page-header{ padding-top:.75rem!important; padding-bottom:.75rem!important; }
.page-header h1{ font-weight:900; margin:0; }
.page-header .display-3{ font-size: clamp(1.35rem, 2.8vw, 2.2rem)!important; line-height:1.15; }
.section-card{ background:#fff; border-radius:1rem; box-shadow:0 10px 30px rgba(0,0,0,.06); padding:1.25rem; }

/* ===================== EJEMPLOS (FOTO / FIRMA) ===================== */
.credential-example,
.signature-example{
  text-align:center; margin:1rem auto; max-width:520px;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
}
.example-caption{ font-weight:700; font-size:1rem; color:#333; margin-bottom:.6rem; text-align:center; }
.image-inline{ display:block; margin:0 auto; max-width:260px; width:100%; height:auto; border-radius:.5rem; box-shadow:0 2px 10px rgba(0,0,0,.08); }
.sig-inline{ display:block; margin:0 auto; max-width:360px; width:100%; height:auto; background:#fff; border:1px solid rgba(0,0,0,.1); border-radius:.5rem; padding:.5rem; box-shadow:0 2px 10px rgba(0,0,0,.05); }

/* === Paso 3: foto más pequeña solo en ese panel === */
#collapsePaso3 .image-inline{
  max-width:180px; border-radius:.4rem; box-shadow:0 2px 6px rgba(0,0,0,.05);
}
#collapsePaso3 .credential-example{ max-width:360px; margin-inline:auto; }

/* ===================== ACORDEÓN (ACC-UAM) ===================== */
.acc-uam .accordion-item{
  border:1px solid rgba(0,0,0,.08)!important;
  border-radius:12px!important;
  overflow:hidden; margin-bottom:1rem; background:#fff;
  box-shadow:0 4px 12px rgba(0,0,0,.08);
}
/* Header (cerrado): oscuro */
.acc-uam .accordion-button{
  background:#121213!important; color:#f3f3f3!important; font-weight:600!important;
  border-radius:12px 12px 0 0!important; box-shadow:none!important;
}
/* Hover en cualquier estado */
.acc-uam .accordion-button:hover{
  background:var(--uam-info-bg-hover)!important; color:var(--uam-info-text)!important;
  box-shadow:0 0 0.6rem rgba(13,110,253,.25)!important;
}
/* Abierto: cyan claro */
.acc-uam .accordion-button:not(.collapsed){
  background:var(--uam-info-bg)!important; color:var(--uam-info-text)!important;
  border-bottom:1px solid var(--uam-info-border)!important;
}
/* Cuerpo */
.acc-uam .accordion-body{
  background:#fff!important; border-top:1px solid rgba(0,0,0,.05);
  border-radius:0 0 12px 12px; padding:1rem 1.25rem; color:#333;
}

/* Flecha nativa de Bootstrap: visible en fondo oscuro y gira al abrir */
.acc-uam .accordion-button::after{
  transition: transform .2s ease, filter .2s ease;
  filter: invert(1) brightness(2);          /* blanco sobre header oscuro */
}
.acc-uam .accordion-button:not(.collapsed)::after{
  transform: rotate(-180deg);
  filter: none;                              /* color por defecto sobre cyan claro */
}

/* Elevación suave */
.acc-uam .accordion-item:hover{
  transform:translateY(-4px); box-shadow:0 4px 12px rgba(0,0,0,.08);
  transition:transform .25s ease, box-shadow .25s ease;
}

/* ===================== TARJETAS DE UNIDADES (CORREGIDO) ===================== */
.unit-grid .unit-card{
  background:#fff;
  border:1px solid var(--card-border);
  border-radius:.9rem;
  box-shadow:var(--card-shadow);
  padding:0; /* sin padding interior */
  height:100%;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  overflow:hidden;
  transition:transform .22s ease, box-shadow .22s ease;
}

/* Tinte por unidad */
/* Tinte por unidad (sin var() dentro de rgba() para evitar errores del linter) */
.unit-card[data-unit="azc"]{
  background: linear-gradient(0deg, rgba(205, 3, 46, .09), rgba(205, 3, 46, .09)), #fff;
  border-color: rgba(205, 3, 46, .22);
}
.unit-card[data-unit="cua"]{
  background: linear-gradient(0deg, rgba(240, 130, 0, .09), rgba(240, 130, 0, .09)), #fff;
  border-color: rgba(240, 130, 0, .22);
}
.unit-card[data-unit="izt"]{
  background: linear-gradient(0deg, rgba(87, 165, 25, .09), rgba(87, 165, 25, .09)), #fff;
  border-color: rgba(87, 165, 25, .22);
}
.unit-card[data-unit="ler"]{
  background: linear-gradient(0deg, rgba(173, 37, 168, .09), rgba(173, 37, 168, .09)), #fff;
  border-color: rgba(173, 37, 168, .22);
}
.unit-card[data-unit="xoc"]{
  background: linear-gradient(0deg, rgba(0, 114, 206, .09), rgba(0, 114, 206, .09)), #fff;
  border-color: rgba(0, 114, 206, .22);
}


/* Imagen: ocupa todo el ancho, alto fijo y bordes redondeados arriba */
.unit-card .unit-thumb{
  width:100%;
  height:220px;
  object-fit:cover;
  object-position:center;
  border-radius:.9rem .9rem 0 0;
  display:block;
  transition:transform .28s ease, box-shadow .28s ease, filter .28s ease;
}

/* Hover */
.unit-card:hover{
  transform:translateY(-3px);
  box-shadow:0 18px 40px rgba(0,0,0,.18);
}
.unit-card:hover .unit-thumb{
  transform:scale(1.07);
  box-shadow:0 16px 36px rgba(0,0,0,.22);
  filter:saturate(1.05);
}

/* Botón ocupa todo el ancho e inferior redondeado */
.unit-cta{
  display:block;
  width:100%;
  margin:0;
  border:none;
  border-radius:0 0 .9rem .9rem;
  font-weight:800;
  letter-spacing:.2px;
  color:#fff;
  text-align:center;
  padding:.75rem 1rem;
  transition:transform .18s ease, box-shadow .18s ease, filter .18s ease;
}

/* Colores por unidad */
.unit-card[data-unit="azc"] .unit-cta{ background:linear-gradient(180deg, rgba(var(--azc-rgb), .97), rgba(var(--azc-rgb), 1)); box-shadow:0 8px 20px rgba(var(--azc-rgb), .35); }
.unit-card[data-unit="cua"] .unit-cta{ background:linear-gradient(180deg, rgba(var(--cua-rgb), .97), rgba(var(--cua-rgb), 1)); box-shadow:0 8px 20px rgba(var(--cua-rgb), .35); }
.unit-card[data-unit="izt"] .unit-cta{ background:linear-gradient(180deg, rgba(var(--izt-rgb), .97), rgba(var(--izt-rgb), 1)); box-shadow:0 8px 20px rgba(var(--izt-rgb), .35); }
.unit-card[data-unit="ler"] .unit-cta{ background:linear-gradient(180deg, rgba(var(--ler-rgb), .97), rgba(var(--ler-rgb), 1)); box-shadow:0 8px 20px rgba(var(--ler-rgb), .35); }
.unit-card[data-unit="xoc"] .unit-cta{ background:linear-gradient(180deg, rgba(var(--xoc-rgb), .97), rgba(var(--xoc-rgb), 1)); box-shadow:0 8px 20px rgba(var(--xoc-rgb), .35); }

/* Hover del botón */
.unit-cta:hover{
  transform:translateY(-1px);
  box-shadow:0 12px 28px rgba(0,0,0,.22);
  filter:brightness(1.05);
}

/* Responsive: altura menor en móviles */
@media (max-width: 576px){
  .unit-card .unit-thumb{ height:180px; }
}