/* ---------- Base ---------- */
body {
    font-family: "Segoe UI", Tahoma, sans-serif;
    background-color: #fff8e1;
    color: #2b2b2b;
    margin: 0;
    padding: 2rem;
    box-sizing: border-box;
}

/* ---------- Título ---------- */
h1 {
    text-align: center;
    color: #ffcc00;
    text-shadow: 2px 2px 0 #2b2b2b;
    margin-bottom: 2rem;
}

/* ---------- Contenedor-------- */
.tabla-container {
    max-width: 100%;
    margin: 0 auto;
    overflow-x: auto;
    width: 100%;
}

/* ---------- Tabla ---------- */
table {
    width: 100%;
    border-collapse: collapse;
    background-color: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    table-layout: fixed;
    min-width: 300px;
}

/* Cabecera */
thead {
    background-color: #ffcc00;
}

thead th {
    padding: 14px;
    font-size: 1rem;
    text-transform: uppercase;
    border-bottom: 3px solid #2b2b2b;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Filas */
tbody tr {
    transition: background-color 0.2s ease;
}

tbody tr:nth-child(even) {
    background-color: #fff7d6;
}

tbody tr:hover {
    background-color: inherit;
}

/* Celdas */
td {
    padding: 5px;
    vertical-align: top;
    border-bottom: 1px solid #ddd;
    word-wrap: break-word;
    overflow-wrap: break-word;
    word-break: break-word;
}

/* Número ejercicio */
td:first-child {
    font-weight: bold;
    text-align: center;
    color: #e53935;
    width: 5%;
}

/* ---------- Código ---------- */
pre {
    background-color: #2b2b2b;
    color: #ffeb3b;
    padding: 12px;
    border-radius: 8px;
    overflow-x: auto;
    max-height: 300px;
    font-size: 0.85rem;
}

/* Scroll bonito */
pre::-webkit-scrollbar {
    height: 8px;
}

pre::-webkit-scrollbar-thumb {
    background-color: #ffcc00;
    border-radius: 4px;
}

pre::-webkit-scrollbar-track {
    background-color: #444;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    body {
        padding: 1rem;
    }

    .tabla-container {
        overflow-x: auto;
    }

    table {
        min-width: 100%;
    }

    thead {
        display: none;
    }

    tbody tr {
        margin-bottom: 1.5rem;
        border: 2px solid #ffcc00;
        border-radius: 12px;
        padding: 1rem;
        background-color: #fff;
        display: block;
    }

    td {
        border: none;
        padding: 8px 0;
        display: block;
    }

    td:first-child {
        font-size: 1.2rem;
    }

    td::before {
        content: attr(data-label);
        font-weight: bold;
        color: #ffcc00;
        display: block;
        margin-bottom: 5px;
    }
}