/* Estilo compartido — Reserva de Seminarios ADEMARK.
   Basado en el lenguaje visual de la web principal del departamento
   (Tailwind CDN + rojo corporativo US + tarjetas con hover). */

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background-color: #fafafa;
  color: #334155;
  background-image: radial-gradient(#e5e7eb 1px, transparent 1px);
  background-size: 24px 24px;
}

/* Color corporativo */
.text-us-red { color: #b30a1b; }
.bg-us-red { background-color: #b30a1b; }
.border-us-red { border-color: #b30a1b; }

/* Tarjetas interactivas */
.hover-card {
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.hover-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px -10px rgba(179, 10, 27, 0.15);
  border-color: rgba(179, 10, 27, 0.3);
}

/* Botón primario con barrido de color */
.btn-primary {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}
.btn-primary:after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #b30a1b;
  transform: scaleX(0);
  transform-origin: bottom right;
  transition: transform 0.4s cubic-bezier(0.86, 0, 0.07, 1);
  z-index: -1;
}
.btn-primary:hover:after {
  transform: scaleX(1);
  transform-origin: bottom left;
}
.btn-primary:hover {
  color: white;
}

/* Animación de entrada */
.fade-in {
  animation: fadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Campos de formulario */
.campo-input {
  width: 100%;
  padding: 0.7rem 1rem;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 0.75rem;
  outline: none;
  transition: all 0.2s;
  color: #374151;
  font-size: 0.95rem;
  box-sizing: border-box;
}
.campo-input:focus {
  border-color: #b30a1b;
  box-shadow: 0 0 0 4px rgba(179, 10, 27, 0.08);
}

/* Etiqueta de campo */
.etiqueta-campo {
  font-size: 0.72rem;
  font-weight: 700;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 0.3rem;
}