/* ----------- Reset básico ----------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body {
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.5;
    background:#f9f9f9;
    color:#333;
}

/* ----------- Layout ---------- */
.site-header,
.site-footer {
    background:#2c3e50;
    color:#fff;
    padding:1rem;
    text-align:center;
}
.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding:0 1rem;
}

/* ----------- Tabla de dispositivos ---------- */
.devices-table {
    width: 100%;
    border-collapse: collapse;
    background:#fff;
    box-shadow:0 2px 5px rgba(0,0,0,.1);
}
.devices-table th,
.devices-table td {
    padding: .75rem 1rem;
    text-align:left;
    border-bottom:1px solid #eaeaea;
}
.devices-table thead {
    background:#2c3e50;
    color:#fff;
}
.actions a {
    margin-right:.5rem;
    text-decoration:none;
    color:#fff;
    padding:.25rem .5rem;
    border-radius:4px;
}
.actions .btn-edit   { background:#27ae60; }
.actions .btn-delete  { background:#c0392b; }

/* ----------- Botones ---------- */
.btn {
    display:inline-block;
    padding:.5rem 1rem;
    border:none;
    border-radius:4px;
    cursor:pointer;
    text-decoration:none;
    font-size:.9rem;
}
.btn-edit   { background:#27ae60; color:#fff; }
.btn-delete { background:#c0392b; color:#fff; }
.btn-cancel { background:#95a5a6; color:#fff; }

/* ----------- Alertas ---------- */
.alert {
    padding:.75rem 1rem;
    margin-bottom:1rem;
    border-radius:4px;
}
.alert.error   { background:#e74c3c; color:#fff; }
.alert.success { background:#2ecc71; color:#fff; }

/* ----------- Footer ---------- */
.site-footer {
    font-size:.85rem;
}

/* ----------- Responsividad ---------- */
@media (max-width: 768px) {
    .devices-table th,
    .devices-table td {
        padding:.5rem;
        font-size:.9rem;
    }
}
/* ----------- Botón para crear un nuevo registro ---------- */
.btn-add {
    display: inline-block;
    margin-bottom: 1rem;
    padding: .5rem 1rem;
    background:#27ae60;          /* verde similar al botón de editar */
    color:#fff;
    text-decoration:none;
    border-radius:4px;
    font-size:.9rem;
}