body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 2em;
    background-color: #f7f8fa;
    color: #333;
}

.navegacion {
    background-color: #ffffff;
    border-bottom: 1px solid #ddd;
    padding: 1.5em 2.5em;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navegacion ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 2em;
    flex-wrap: wrap;
    justify-content: center;
}

.navegacion li {
    cursor: pointer;
    padding: 0.75em 1.2em;
    transition: background-color 0.3s, color 0.3s;
    border-radius: 5px;
    font-weight: 600;
    white-space: nowrap;
}

.navegacion li:hover {
    background-color: #4A90E2;
    color: white;
}

@media (max-width: 600px) {
    .navegacion {
        padding: 0.75em 1.5em;
    }

    .navegacion ul {
        gap: 1em;
        justify-content: center;
    }

    .navegacion li {
        padding: 0.6em 1em;
        font-size: 0.9em;
    }
}

.history {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 20px;
    margin-top: 1.5em;
}

.history-header,
.history-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    padding: 10px;
    align-items: center;
    border-radius: 8px;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.history-header {
    font-weight: 700;
    background-color: #f0f0f0;
    color: #333;
}

.history-row {
    background-color: #ffffff;
    border: 1px solid #ddd;
    color: #555;
    transition: background-color 0.3s, transform 0.3s;
}

.history-row:hover {
    background-color: #e6f7ff;
    transform: scale(1.02);
}

.history-header div,
.history-row div {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1rem;
}

.history-header div {
    font-weight: bold;
}

.delete-btn {
    background: none;
    border: none;
    color: #555;
    cursor: pointer;
    font-size: 1.1em;
    transition: color 0.3s ease;
}

.delete-btn:hover {
    color: #d9534f; /* rojo suave tipo Bootstrap, o pon #0078d7 si prefieres azul */
}

.mensaje-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    background-color: #fffae6;
    padding: 1em;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    max-width: 300px;
}

@media (max-width: 600px) {
    .history {
        padding: 10px;
    }

    .history-header,
    .history-row {
        grid-template-columns: 1fr 1fr;
    }
}