/* Mobile First Design */
.form-container {
    padding: 20px;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    /* Degradado solicitado */
    background: linear-gradient(180deg, #004a99 0%, #87ceeb 50%, #ffffff 100%);
    font-family: Arial, sans-serif;
}

#registro-billar-form {
    background: white;
    width: 100%;
    max-width: 450px;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

h2 { color: #004a99; text-align: center; margin-bottom: 5px; }
.subtitle { color: #555; text-align: center; font-size: 14px; margin-bottom: 20px; }

.input-group { margin-bottom: 15px; }
.input-group label { display: block; font-weight: bold; margin-bottom: 5px; color: #333; }

.input-group input, .input-group select, .input-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
    box-sizing: border-box;
}

#btn-enviar {
    width: 100%;
    padding: 12px;
    background: #004a99;
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    font-size: 16px;
}

#btn-enviar:hover { background: #003670; }