:root {
    --color-dark: #262626;      /* Oscuro apagado */
    --color-light-blue: #0097b2; /* Azul claro */
    --color-deep-blue: #0c2d59;  /* Azul fuerte */
    --color-bg: #f8f9fa;        /* Fondo gris muy suave */
    --color-white: #ffffff;
}

body {
    background-color: var(--color-bg);
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--color-dark);
    padding-bottom: 40px;
}

/* Encabezados y Logos */
.logo-container {
    text-align: center;
    padding: 20px 0;
}


.logo-img {
    max-height: 100%; /* Aumentado de 80px a 180px para que se vea bien grande */
    width: auto;       /* Mantiene la proporción */
    max-width: 100%;   /* Evita que se salga de la pantalla en celulares */
    object-fit: contain;
    margin-bottom: 10px;
}

.page-header {
    margin-top: 30px;
    margin-bottom: 20px;
    border-bottom: 3px solid var(--color-light-blue);
    display: inline-block;
    padding-bottom: 5px;
    width: 100%;
}

.page-header h2 {
    color: var(--color-deep-blue);
    font-weight: 700;
    margin: 0;
    font-size: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Tarjetas (Cards) para agrupar secciones */
.modern-card {
    background: var(--color-white);
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    padding: 30px;
    margin-bottom: 25px;
    border-top: 5px solid var(--color-deep-blue);
    transition: transform 0.2s ease;
}

.modern-card:hover {
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

/* Formularios */
.form-label {
    font-weight: 600;
    color: var(--color-deep-blue);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.form-control, .form-select {
    border: 1px solid #ced4da;
    border-radius: 8px;
    padding: 10px 15px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    background-color: #fcfcfc;
}

.form-control:focus, .form-select:focus {
    border-color: var(--color-light-blue);
    box-shadow: 0 0 0 4px rgba(0, 151, 178, 0.15);
    background-color: #fff;
}

/* Asterisco obligatorio */
.required-mark {
    color: #dc3545; /* Rojo estándar para errores/alertas */
    margin-left: 3px;
    font-size: 0.8rem;
}

/* Botones */
.btn-primary {
    background-color: var(--color-deep-blue);
    border-color: var(--color-deep-blue);
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    width: 100%; /* En móbiles full width */
}

@media (min-width: 768px) {
    .btn-primary {
        width: auto; /* En desktop tamaño normal */
        min-width: 200px;
    }
}

.btn-primary:hover {
    background-color: var(--color-light-blue);
    border-color: var(--color-light-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 151, 178, 0.4);
}

.btn-secondary-action {
    background-color: white;
    color: var(--color-deep-blue);
    border: 2px solid var(--color-deep-blue);
    border-radius: 50px;
    padding: 8px 20px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-secondary-action:hover {
    background-color: var(--color-deep-blue);
    color: white;
}

.btn-remove {
    background-color: #ffebee;
    color: #c62828;
    border: 1px solid #ef9a9a;
}

.btn-remove:hover {
    background-color: #c62828;
    color: white;
}

/* Alertas y Notas */
.alert-info-custom {
    background-color: #e0f7fa;
    border-left: 5px solid var(--color-light-blue);
    color: var(--color-deep-blue);
    padding: 15px;
    border-radius: 4px;
}

/* Checkbox y Radio modernos */
.form-check-input:checked {
    background-color: var(--color-light-blue);
    border-color: var(--color-light-blue);
}

/* Modal */
.modal-header {
    background-color: var(--color-deep-blue);
    color: white;
}
.modal-title {
    font-weight: bold;
}
.close {
    color: white;
    opacity: 0.8;
}