/* =========================================================
   PANTALLAS DE SESIÓN ADMIN / OPERARIO
   ========================================================= */

html,
body {
    min-height: 100%;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

.fondo-sesion {
    min-height: 100vh;
    background: linear-gradient(135deg, #111111, #2d2d2d, #7a0000);
    font-family: Arial, Helvetica, sans-serif;
    padding-bottom: 120px;
}

.panel-bienvenida {
    background-color: rgba(255, 255, 255, 0.95);
    padding: 35px;
    border-radius: 22px;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
    border-bottom: 6px solid #b30000;
}

.panel-bienvenida h2 {
    color: #b30000;
    font-weight: bold;
    margin-bottom: 15px;
}

.panel-bienvenida p {
    color: #333333;
    font-size: 18px;
    margin-bottom: 8px;
}

.texto-secundario {
    color: #555555 !important;
    font-size: 16px !important;
}

.tarjeta-modulo {
    display: block;
    height: 100%;
    min-height: 250px;
    text-decoration: none;
    background-color: #ffffff;
    color: #222222;
    padding: 30px 25px;
    border-radius: 22px;
    text-align: center;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    border-bottom: 5px solid #b30000;
    transition: 0.3s ease;
}

.tarjeta-modulo:hover {
    transform: translateY(-6px);
    background-color: #f4f4f4;
    color: #222222;
}

.tarjeta-modulo i {
    font-size: 45px;
    color: #b30000;
    margin-bottom: 18px;
}

.tarjeta-modulo h5 {
    font-weight: bold;
    margin-bottom: 12px;
}

.tarjeta-modulo p {
    color: #555555;
    font-size: 15px;
    margin-bottom: 0;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media screen and (max-width: 768px) {
    .fondo-sesion {
        padding-bottom: 140px;
    }

    .panel-bienvenida {
        padding: 25px;
    }

    .tarjeta-modulo {
        min-height: auto;
    }
}