:root {
    --primary-color: #611232; /* Color institucional representativo */
    --text-color: #333333;
    --bg-color: #f4f6f9;
}
body { font-family: 'Segoe UI', Arial, sans-serif; background-color: var(--bg-color); color: var(--text-color); margin: 0; padding: 20px; }
.container { max-width: 900px; margin: 0 auto; background: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
h1, h2 { color: var(--primary-color); text-align: center; }
.form-group { margin-bottom: 20px; display: flex; flex-direction: column; align-items: center;}
input[type="text"] { width: 100%; max-width: 400px; padding: 12px; font-size: 16px; border: 1px solid #ccc; border-radius: 4px; text-transform: uppercase; text-align: center; }
button { background-color: var(--primary-color); color: #fff; padding: 12px 30px; border: none; border-radius: 4px; font-size: 16px; cursor: pointer; transition: 0.3s; margin-top: 10px; }
button:hover { background-color: #4a0d26; }
table { width: 100%; border-collapse: collapse; margin-top: 20px; }
th, td { padding: 12px; border: 1px solid #ddd; text-align: center; }
th { background-color: var(--primary-color); color: white; }
a.btn-descarga { display: inline-block; background-color: #0056b3; color: white; padding: 8px 12px; text-decoration: none; border-radius: 4px; }
a.btn-descarga:hover { background-color: #003d82; }
.alert { padding: 15px; margin-bottom: 20px; border-radius: 4px; text-align: center; }
.alert-error { background-color: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.alert-success { background-color: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.validacion-card { border: 2px solid var(--primary-color); border-radius: 8px; padding: 20px; margin-top: 20px; background-color: #fafafa;}
.validacion-card p { font-size: 16px; margin-bottom: 10px; }
.validacion-card strong { color: var(--primary-color); }
@media (max-width: 768px) { table, thead, tbody, th, td, tr { display: block; } th { display: none; } td { text-align: right; position: relative; padding-left: 50%; } td::before { content: attr(data-label); position: absolute; left: 10px; width: 45%; font-weight: bold; text-align: left; } }