body {
    background: linear-gradient(135deg, #002f6c, #0033a0, #005bbb);
    color: white;
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.navbar {
    background-color: rgba(0,0,0,0.2);
    backdrop-filter: blur(6px);
}

.logo {
    height: 50px;
}

.hero {
    padding: 80px 20px;
    text-align: center;
}

.card-custom {
    background: white;
    color: #002f6c;
    border: none;
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.card-custom:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.card-icon {
    font-size: 45px;
    margin-bottom: 15px;
    color: #0033a0;
}

footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    background-color: rgba(0,0,0,0.2);
}

.btn-custom {
    background-color: #0033a0;
    color: white;
    border: none;
}

.btn-custom:hover {
    background-color: #002f6c;
}

.card-disabled {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

/* Badge */
.badge-dev {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 3;
    font-size: 0.75rem;
    padding: 6px 10px;
    border-radius: 20px;
}

/* Overlay */
.overlay-loader {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 2;
}

/* Desktop hover */
@media (hover: hover) {
    .card-disabled:hover .overlay-loader {
        opacity: 1;
    }
}

/* En móvil mostrar leve indicador */
@media (hover: none) {
    .card-disabled .overlay-loader {
        opacity: 0.15;
    }
}

/* Spinner visible y más moderno */
.spinner-border {
    width: 2.5rem;
    height: 2.5rem;
    border-width: 0.25em;
}

/* Card en desarrollo */
.card-disabled {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

/* Overlay institucional moderno */
.overlay-dev {
    position: absolute;
    inset: 0;
    backdrop-filter: blur(6px);
    background: rgba(255, 255, 255, 0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 3;
}

/* Mostrar siempre en móvil */
@media (hover: none) {
    .overlay-dev {
        opacity: 1;
    }
}

/* Mostrar al pasar mouse en desktop */
@media (hover: hover) {
    .card-disabled:hover .overlay-dev {
        opacity: 1;
    }
}

/* Contenido del overlay */
.dev-content {
    animation: pulseInstitutional 2s infinite;
}

/* Spinner moderno */
.spinner-border {
    width: 2.3rem;
    height: 2.3rem;
    border-width: 0.25em;
}

/* Animación pulso institucional azul */
@keyframes pulseInstitutional {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.85;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}