body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
    color: #222;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

footer {
    background: #ff0000;
    color: white;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    font-weight: bold;
}

header {
    background: #ff0000;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
}

header a {
    color: white;
    text-decoration: none;
    font-size: 1.2em;
    font-weight: bold;
}

main {
    max-width: 900px;
    width: 100%;
    margin: 30px auto;
    padding: 0 20px;
    flex: 1;
}

.portada {
    text-align: center;
    margin-top: 60px;
}

.portada img {
    max-width: 300px;
    cursor: pointer;
    border: 3px solid #ff0000;
    border-radius: 8px;
}

.portada p {
    color: #555;
    margin-top: 10px;
}

form {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 20px;
    background: white;
    padding: 15px;
    border-radius: 6px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

input[type="text"], select {
    padding: 6px 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 0.95em;
}

button {
    padding: 6px 16px;
    background: #ff0000;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.95em;
}

button:hover {
    background: #ff0000;
}

table {
    width: 100%;
    background: white;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
    border: 1px solid black;
}

th {
    background: #ff0000;
    color: white;
    padding: 10px;
    text-align: left;
    border: 1px solid black;
}

td {
    padding: 9px 10px;
    border: 1px solid black;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: #f0f4ff;
}

a {
    color: #ff0000;
}

h1 {
    margin-bottom: 20px;
}

ul {
    background: white;
    padding: 15px 30px;
    border-radius: 6px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

.detalle-tabla {
    width: 100%;
}