body {
    margin: 0;
    padding: 0;
}
#headerSpacer {
    height: 60px;     /* deja espacio debajo del header */
}

/* HEADER FIJO TIPO MENÚ */
.topHeader {
    width: 100%;
    height: 60px;
    background: #0A2A66;
    color: #ffffff;

    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 25px;

    font-size: 15px;
    font-weight: 600;

    position: fixed;
    top: 0;
    left: 0;

    z-index: 9999;
    box-sizing: border-box;
}

.logoAdmin {
    max-height: 55px;
    width: auto;
    cursor: pointer;
    transition: 0.2s 
ease-in-out;
}
/* Celdas del menú */
.topHeader .left {
    text-align: left;
    flex: 1;
}

.topHeader .center {
    text-align: center;
    flex: 1;
}

.topHeader .right {
    text-align: right;
    flex: 1;
    opacity: 0.9;
}

/* Para que el contenido no quede oculto detrás del header */
main {
    margin-top: 10px;
    text-align: center;
}

.user-box {
    margin: 20px auto;
    width: fit-content;
}
input {
    padding: 10px;
    font-size: 18px;
}

button {
    padding: 10px 18px;
    font-size: 18px;
    background: #003399;
    color: white;
    border: none;
    border-radius: 6px;
}

.error {
    color: red;
    font-size: 20px;
}

.carton90 {
    border-collapse: collapse;
    margin: 25px auto;
}

.carton90 td {
    width: 58px;
    height: 58px;
    border: 2px solid #003399;
    text-align: center;
    vertical-align: middle;
}

.num {
    background: white;
    color: #003399;
    font-size: 28px;
    font-weight: bold;
}

.vacio {
    background: #3f5d9f;
}

.vacio img {
    width: 28px;
    opacity: 0.35;
    filter: brightness(1.4);
}

.celda-num {
    cursor: pointer;
    transition: 0.2s ease;
}

.celda-num.marcado {
    background: #ffb3b3 !important;
    border-color: red !important;
}

table {
    width: 95%;
    margin: 20px auto;
    border-collapse: collapse;
}

th, td {
    padding: 8px;
    border: 1px solid #333;
}